ssm layui 文件上传报错 5C

卡一天了,一个功能没写,救救孩子吧quq

org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request; nested exception is org.apache.commons.fileupload.FileUploadException: Unexpected EOF read on the socket

2个回答

weixin_39689007
筱祁SAMA 用layui做的,不需要加,它会自动给你二进制
一年多之前 回复
Csdn user default icon
上传中...
上传图片
插入图片
抄袭、复制答案,以达到刷声望分或其他目的的行为,在CSDN问答是严格禁止的,一经发现立刻封号。是时候展现真正的技术了!
其他相关推荐
ssm配置文件突然报错,哪位大神知道哪错了?
刚创建一个项目,之前配置文件一直用的这个,运行jsp页面报错404,把这段代码注释掉就不报错了,那位大神知道哪错了怎么改?在线等 急急急!控制台报错如下: Error creating bean with name 'sqlSessionFactory' defined in file [E:\sht\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\MySht\WEB-INF\classes\springconfig\common.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.lang.String' to required type 'org.springframework.core.io.Resource[]' for property 'mapperLocations'; nested exception is java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:dao/*.xml]: class path resource [dao/] cannot be resolved to URL because it does not exist spring配置:<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations" value="classpath:jdbc.properties"></property> </bean> <bean id="ds" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="${driverClass}" /> <property name="jdbcUrl" value="${url}" /> <property name="user" value="${userName}" /> <property name="password" value="${passWord}" /> </bean> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="ds" /> </bean> <!-- <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="ds" /> 自动扫描mapping.xml文件 <property name="mapperLocations" value="classpath:dao/*.xml"></property> </bean> --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> <property name="basePackage" value="dao"/> </bean> <tx:annotation-driven transaction-manager="transactionManager"/> <context:component-scan base-package="biz.impl"/> </beans> 把这行注释掉就不报错了: <!-- <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="ds" /> 自动扫描mapping.xml文件 <property name="mapperLocations" value="classpath:dao/*.xml"></property> </bean> -->
在练习淘淘商城中配置ssm文件,一直报错:Missing artifact junit:junit:jar:${junit.version}
``` <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>cn.itcast.usermanage</groupId> <artifactId>itcast-usermanage</artifactId> <version>1.0.0-SNAPSHOT</version> <packaging>war</packaging> <properties> <failOnMissingWebXml>false</failOnMissingWebXml> </properties> <dependencies> <!-- 单元测试 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> <scope>test</scope> </dependency> </dependencies> </project> ``` 报错的地方就是:<!-- 单元测试 --> →<dependency> 错误提示 Missing artifact junit:junit:jar:${junit.version} 这个是在子项目的中配置pom.xml一直提示这样的错误!我配置的仓库文件全部都有!
SSM框架访问Action报错
使用JavaWeb框架时直接访问Action的时候发生报错: 页面显示: ![图片说明](https://img-ask.csdn.net/upload/201904/09/1554782146_879296.png) 后台报错: ![图片说明](https://img-ask.csdn.net/upload/201904/09/1554782212_726504.png) Action代码: ``` java @Controller @Scope("prototype") @ParentPackage("struts-default") @Namespace("/riskConfig") public class RiskConfigAction extends BaseAction implements ModelDriven<Map> { private RiskConfigService riskConfigService; Map map = new HashMap(); @Override public Map getModel() { return map; } @Action(value = "getRegionList", results = { @Result(name = "success", location = "/jsp/riskConfig/region.jsp", type = "dispatcher") }) public String getRegionList() { List<Map<String, Object>> regionList = riskConfigService.getRegion(); request.setAttribute("regionList", regionList); return "success"; } } ``` struts.xml配置文件内容: ![图片说明](https://img-ask.csdn.net/upload/201904/09/1554782425_18776.png)
ssm项目Tomcat启动报错
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'LoginDao': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'LoginMapper' is defined at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:308) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5017) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5531) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1574) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1564) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:748) Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'LoginMapper' is defined at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:641) at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1159) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:282) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:446) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:420) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:545) at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:155) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:305) ... 22 more 这是dao实现类 ``` @Repository("LoginDao") public class LoginDaoImpl implements LoginDao { @Resource(name = "LoginMapper") private LoginMapper LoginMapper; public LoginMapper getLoginMapper() { return LoginMapper; } public void setLoginMapper(LoginMapper loginMapper) { LoginMapper = loginMapper; } ``` 这是service实现类 ``` @Service("LoginService") public class LoginServiceImpl implements LoginService { @Resource private LoginDao LoginDao; ``` 配置文件 <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <!-- 引入我们的database.properties,hibernate.properties文件 --> <bean id="property" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:database.properties</value><!-- classpath代表类路径,如src下面的文件 --> </list> </property> </bean> <!-- 定义使用C3P0连接池的数据源 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <!-- 指定连接数据库的JDBC驱动 --> <property name="driverClass"> <value>${mysql.driver_class}</value> </property> <!-- 连接数据库所用的URL --> <property name="jdbcUrl"> <value>${mysql.connection.url}</value> </property> <!-- 连接数据库的用户名 --> <property name="user"> <value>${mysql.connection.username}</value> </property> <!-- 连接数据库的密码 --> <property name="password"> <value>${mysql.connection.password}</value> </property> <!-- 设置数据库连接池的最大连接数 --> <property name="maxPoolSize"> <value>30</value> </property> <!-- 设置数据库连接池的最小连接数 --> <property name="minPoolSize"> <value>2</value> </property> <!-- 设置数据库连接池的初始化连接数 --> <property name="initialPoolSize"> <value>2</value> </property> <!-- 设置数据库连接池的连接的最大空闲时间,单位为秒 --> <property name="maxIdleTime"> <value>10</value> </property> </bean> <!-- 启用自动扫描 --> <context:component-scan base-package="com.kachi.*"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /><!-- 排除注解为controller的类型 --> </context:component-scan> <!-- 配置SqlSessionFactoryBean --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis.xml"/> <!-- mapper和resultmap配置路径 --> <property name="mapperLocations"> <list> <value>classpath:entity/config/*.xml</value> </list> </property> </bean> <!-- 自动扫描mapper接口,注入sqlsessionfactory --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.kachi.mapper"/> </bean> <!-- 开启 mybatis事务--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/> </beans> springmvc配置文件 <?xml version="1.0" encoding="UTF-8"?> <!-- <mvc:annotation-driven/>该注解可以代替下面的两个注解 --> <!-- 启动Spring MVC的注解功能,完成请求和注解POJO的映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" > <property name="messageConverters"> <list> <bean class = "org.springframework.http.converter.StringHttpMessageConverter"> <property name = "supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> </list> </property> </bean> </list> </property> </bean> <!-- 注解探测器 --> <context:component-scan base-package="com.kachi.controller"/> <!-- 静态资源访问 --> <mvc:resources location="/css/" mapping="/css/**"/> <mvc:resources location="/js/" mapping="/js/**"/> <mvc:resources location="/font/" mapping="/font/**"/> <mvc:resources location="/images/" mapping="/images/**"/> <!-- annotation默认的方法映射适配器 ,视图解析器,类似于action--> <bean id="handlerMapping" class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" /><!-- 寻找类 --> <bean id="handlerAdapter" class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" /><!-- 根据url找方法 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
ssm使用shiro启动报错
报错内容 Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginRealm': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.warehouse.service.UserLogingService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.warehouse.service.UserLogingService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(shareable=true, lookup=, name=, description=, authenticationType=CONTAINER, type=class java.lang.Object, mappedName=)} shiro.xml配置 ``` <!-- 配置Shiro核心Filter --> <bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean"> <!-- 安全管理器 --> <property name="securityManager" ref="securityManager" /> <!-- 未认证,跳转到哪个页面 --> <property name="loginUrl" value="/login.html" /> <!-- 登陆成功页面 --> <property name="successUrl" value="/index.html" /> <!-- 认证后,没有权限跳转页面 --> <property name="unauthorizedUrl" value="/unauthorized.html" /> <property name="filterChainDefinitions"> <value> /WEB-INF/views/login.html* = anon /loging.do* = anon /WEB-INF/llb/* = anon /res/** = anon /** = authc </value> </property> </bean> <!-- 配置Realm --> <bean id="loginRealm" class="com.warehouse.service.LoginRealm"> </bean> <!-- 安全管理器 --> <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager"> <property name="realm" ref="loginRealm" /> <!-- <property name="cacheManager" ref="shiroCacheManager" /> --> </bean> <bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor"/> ``` applicationContext.xml配置 ``` applicationContext.xml配置 <import resource="applicationContext-shiro.xml"/> <!-- 开启定时任务 --> <task:annotation-driven /> <!-- MyBatis配置 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 显式指定Mapper文件位置 --> <property name="mapperLocations" value="classpath*:/mybatis/*Mapper.xml" /> <!-- mybatis配置文件路径 --> <property name="configLocation" value="classpath:/mybatis-config.xml" /> <property name="typeHandlersPackage" value="package com.warehouse.util" /> </bean> <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlSessionFactory" /> <!-- 这个执行器会批量执行更新语句, 还有SIMPLE 和 REUSE --> <!-- <constructor-arg index="1" value="BATCH"/> --> </bean> <!-- 扫描basePackage接口 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 映射器接口文件的包路径, --> <property name="basePackage" value="com.warehouse.dao" /> </bean> <!-- 使用annotation定义事务 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" /> <!-- 数据源配置, 使用Tomcat JDBC连接池 --> <bean id="dataSource" class="org.apache.tomcat.jdbc.pool.DataSource" destroy-method="close"> <!-- Connection Info --> <property name="driverClassName" value="${jdbc.driver}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- Connection Pooling Info --> <property name="maxActive" value="${jdbc.pool.maxActive}" /> <property name="maxIdle" value="${jdbc.pool.maxIdle}" /> <property name="minIdle" value="0" /> <property name="defaultAutoCommit" value="false" /> </bean> <!-- production环境 --> <beans profile="production"> <context:property-placeholder ignore-unresolvable="true" file-encoding="utf-8" location="classpath:config.properties,classpath:jdbc.properties" /> </beans> ``` springMVC.xml配置 ``` <context:component-scan base-package="com.warehouse.*" /> <!--jsp可以不用添加这个 如果修改成html就必须用这个 --> <mvc:default-servlet-handler /> <mvc:annotation-driven /> <!--上面这个是为了html可以用 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="mappingJacksonHttpMessageConverter" /> </list> </property> </bean> <!--模板 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="mappingJacksonHttpMessageConverter" /> </list> </property> </bean> <mvc:resources mapping="/res/**" location="/res/" /> <bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer"> <property name="templateLoaderPath" value="/WEB-INF/views/" /> <property name="freemarkerSettings"> <props> <prop key="template_update_delay">0</prop> <prop key="default_encoding">UTF-8</prop> <prop key="number_format">0.##########</prop> <prop key="datetime_format">yyyy-MM-dd HH:mm:ss</prop> <prop key="classic_compatible">true</prop> <prop key="template_exception_handler">ignore</prop> <prop key="auto_import">ftl/public.ftl as p,ftl/page.ftl as pg </prop> </props> </property> <property name="freemarkerVariables"> <map> <entry key="listProduct" value-ref="ProductDiretciv" /> </map> </property> </bean> <bean id="viewResolver" class="com.warehouse.freemarker.RichFreeMarkerViewResolver"> <property name="suffix"> <value>.html</value> </property> <property name="contentType" value="text/html;charset=UTF-8"></property> </bean> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views" /> <property name="suffix" value=".*" /> </bean> <!-- <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/WEB-INF/views/" p:suffix=".html"/> --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="mappingJacksonHttpMessageConverter" /> </list> </property> </bean> <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> </list> </property> </bean> ``` @Controller @Scope("prototype") public class UserLogingController { @RequestMapping("loging.do") @ResponseBody public String loging(ForeginUser fuser) { Subject subject = SecurityUtils.getSubject(); AuthenticationToken token = new UsernamePasswordToken(fuser.getUsername(), fuser.getPassword()); try { subject.login(token); return _HTML_INDEX_; } catch (AuthenticationException e) { e.printStackTrace(); return _HTML_LOGIN_; } } }@Controller @Scope("prototype") public class UserLogingController { @RequestMapping("loging.do") @ResponseBody public String loging(ForeginUser fuser) { Subject subject = SecurityUtils.getSubject(); AuthenticationToken token = new UsernamePasswordToken(fuser.getUsername(), fuser.getPassword()); try { subject.login(token); return _HTML_INDEX_; } catch (AuthenticationException e) { e.printStackTrace(); return _HTML_LOGIN_; } } } ``` ``` package com.warehouse.realm; public class LoginRealm extends AuthorizingRealm { @Resource private UserLogingService userlogingService; @Override protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection arg0) { return null; } @Override // 认证 protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException { UsernamePasswordToken upToken = (UsernamePasswordToken) token; ForeginUser resultUser = userlogingService.findByUsername(upToken.getUsername()); if (resultUser == null) { return new SimpleAuthenticationInfo(resultUser, null, getName()); } else { return new SimpleAuthenticationInfo(resultUser, resultUser.getPassword(), getName()); } } } package com.warehouse.service; @Service public class UserLogingServiceImpl implements UserLogingService { @Resource private UserLogingMapper userLogingMapeer; @Override public ForeginUser checkLoaderInfo(ForeginUser fuser) { return userLogingMapeer.findByUser(fuser); } @Override public ForeginUser findByUsername(String username) { return userLogingMapeer.findByUsername(username); } }
java ssm框架 文件上传,获取不到文件
控制器中方法: @RequestMapping(value = "/upload2") public void uploadFile2(HttpServletRequest request, HttpServletResponse response) { try { MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; List<MultipartFile> fileList = multipartRequest.getFiles("file"); for (MultipartFile mf : fileList) { if(!mf.isEmpty()){ } } } catch (Exception e) { e.printStackTrace(); } } jsp页面: <form action="upload2" value="file" enctype="multipart/form-data" method="post" > <div style="margin-bottom:10px;"> <input type="file" value="file" id="image" /> <input type="submit" value="提交" /> </div> </form> xml配置文件: <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding" value="UTF-8" /> <property name="maxUploadSize" value="2000000000" /> </bean> 在控制器中multipartRequest.getFiles("file")获取的list为0,有大神知道问题出在哪吗?
使用Maven搭建SSM项目报错求教
使用Maven搭建SSM项目报错如下:LifecycleProcessor not initialized - call 'refresh' before invoking lifecycle methods via the context: Root WebApplicationContext: startup date ,是什么意思?该如何解决?
ssm 下启动tomcat报错
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'transactionManager' available 怎么改都是这个错误,快疯了,球球各位大锅了! 这是我的spring.xml(https://img-ask.csdn.net/upload/201712/01/1512104409_808121.png)
ssm上传文件后台接受不到,页面报错404
这是错误 Resolving exception from handler [null]: org.springframework.web.bind.UnsatisfiedServletRequestParameterException: Parameter conditions "save" not met for actual request parameters: upload={} DEBUG [http-8080-1] - Resolving exception from handler [null]: org.springframework.web.bind.UnsatisfiedServletRequestParameterException: Parameter conditions "save" not met for actual request parameters: upload={} DEBUG [http-8080-1] - Resolving exception from handler [null]: org.springframework.web.bind.UnsatisfiedServletRequestParameterException: Parameter conditions "save" not met for actual request parameters: upload={} DEBUG [http-8080-1] - Null ModelAndView returned to DispatcherServlet with name 'springMvc': assuming HandlerAdapter completed request handling DEBUG [http-8080-1] - Successfully completed request
Java ssm 框架 访问报错500
报错如下: ``` HTTP Status 500 – Internal Server Error Type Exception Report Message Servlet.init() for servlet SpringMVC threw exception Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception javax.servlet.ServletException: Servlet.init() for servlet SpringMVC threw exception org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1441) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:745) Root Cause org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.context.annotation.internalAsyncAnnotationProcessor': Initialization of bean failed; nested exception is java.lang.NoSuchMethodError: org.springframework.aop.interceptor.AsyncExecutionInterceptor.<init>(Ljava/util/concurrent/Executor;Lorg/springframework/aop/interceptor/AsyncUncaughtExceptionHandler;)V org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:220) org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:615) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:465) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:663) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:629) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:677) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:548) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:489) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1441) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:745) Root Cause java.lang.NoSuchMethodError: org.springframework.aop.interceptor.AsyncExecutionInterceptor.<init>(Ljava/util/concurrent/Executor;Lorg/springframework/aop/interceptor/AsyncUncaughtExceptionHandler;)V org.springframework.scheduling.annotation.AnnotationAsyncExecutionInterceptor.<init>(AnnotationAsyncExecutionInterceptor.java:60) org.springframework.scheduling.annotation.AsyncAnnotationAdvisor.buildAdvice(AsyncAnnotationAdvisor.java:150) org.springframework.scheduling.annotation.AsyncAnnotationAdvisor.<init>(AsyncAnnotationAdvisor.java:99) org.springframework.scheduling.annotation.AsyncAnnotationBeanPostProcessor.setBeanFactory(AsyncAnnotationBeanPostProcessor.java:105) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1585) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1553) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:220) org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:615) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:465) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:663) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:629) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:677) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:548) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:489) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1441) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:745) Note The full stack trace of the root cause is available in the server logs. Apache Tomcat/8.5.12 ``` 一搭到服务器上就出现这个错误,但是本地window没问题;卡了一天了,脑瓜子呼呼的,第一次用这个玩意,实在看不出来啥问题了,有没有大佬帮忙指点指点,给条明路呀!! 下面是几个基础配置: web.xml: ``` <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <display-name>Archetype Created Web Application</display-name> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mybatis.xml</param-value> </context-param> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <async-supported>true</async-supported> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <filter> <filter-name>CORSFilter</filter-name> <filter-class>com.bls.mp.common.MyFilter</filter-class> <init-param> <param-name>excludedPages</param-name> <param-value>/UserAuthServlet</param-value> </init-param> </filter> <filter-mapping> <filter-name>CORSFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> </listener> <servlet> <servlet-name>SpringMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> <async-supported>true</async-supported> </servlet> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>/index.jsp</welcome-file> </welcome-file-list> </web-app> ``` spring-mvc.xml: ``` <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd" > <!-- 自动扫描该包,使SpringMVC认为包下用了@controller注解的类是控制器 --> <context:component-scan base-package="com.bls.mp.controller"/> <!--避免IE执行AJAX时,返回JSON出现下载文件 --> <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> </list> </property> </bean> <!-- <bean id="thirdDataService" class="com.bls.mp.service.impl.ThirdDataServiceImpl"/>--> <bean class="com.bls.mp.common.SpringTool"/> <!-- 启动SpringMVC的注解功能,完成请求和注解POJO的映射 --> <!-- <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="mappingJacksonHttpMessageConverter" /> JSON转换器 </list> </property> </bean>--> <!-- 定义跳转的文件的前后缀 ,视图模式配置--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀,变成一个 可用的url地址 --> <property name="prefix" value="/WEB-INF/resources/jsp/" /> <property name="suffix" value=".jsp" /> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property> </bean> <!-- 配置文件上传,如果没有使用文件上传可以不用配置,当然如果不配,那么配置文件中也不必引入上传组件包 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!-- 默认编码 --> <property name="defaultEncoding" value="utf-8" /> <!-- 文件大小最大值 --> <property name="maxUploadSize" value="10485760000" /> <!-- 内存中的最大值 --> <property name="maxInMemorySize" value="40960" /> </bean> <!-- 全局异常处理器 --> <bean class="com.bls.mp.common.exception.CustomExceptionResolver"></bean> <mvc:annotation-driven/> <!-- 拦截器配置 --> <mvc:interceptors> <mvc:interceptor> <mvc:mapping path="/setadmin"/> <!--<mvc:mapping path="/user/userList"/> --> <mvc:mapping path="/Blocker"/> <mvc:mapping path="/goods/goods"/> <bean class="com.bls.mp.interceptor.AuthInterceptor"></bean> </mvc:interceptor> </mvc:interceptors> <task:annotation-driven/> <!-- 配置访问静态文件 --> <mvc:default-servlet-handler/> <mvc:resources location="/images/" mapping="/images/**"/> <mvc:resources location="/WEB-INF/js/" mapping="/js/**"/> <mvc:resources location="/WEB-INF/resources/jsp/" mapping="/jsp/**"/> <mvc:resources location="/WEB-INF/resources/css/" mapping="/css/**"/> </beans> ``` spring-mybatis.xml: ``` <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <!-- 自动扫描 --> <context:component-scan base-package="com.bls.mp"/> <!-- 引入配置文件 --> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:jdbc.properties" /> </bean> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${jdbc.driver}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 初始化连接大小 --> <property name="initialSize" value="${initialSize}"></property> <!-- 连接池最大数量 --> <property name="maxActive" value="${maxActive}"></property> <!-- 连接池最大空闲 --> <property name="maxIdle" value="${maxIdle}"></property> <!-- 连接池最小空闲 --> <property name="minIdle" value="${minIdle}"></property> <!-- 获取连接最大等待时间 --> <property name="maxWait" value="${maxWait}"></property> </bean> <!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 自动扫描mapping.xml文件 --> <property name="mapperLocations" value="classpath:com/bls/mp/mapping/*.xml"></property> </bean> <!-- DAO接口所在包名,Spring会自动查找其下的类 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.bls.mp.dao" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> </beans> ``` jdk版本: 1.8.0_222 tomcat 版本:8.0 有没有大佬来给看看呀0.0
SSM整合运行Tomcat报错org.springframework.beans.factory.BeanCreationException
项目列表 ![图片说明](https://img-ask.csdn.net/upload/201905/15/1557906186_727307.png) applicaiontContext.xml代码片段 ``` <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> <!-- 1.加载db配置文件 --> <context:property-placeholder location="classpath:dp.properties"/> <!-- 2.配置c3p0数据源 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driver}"/> <property name="jdbcUrl" value="${jdbc.url}"/> <property name="user" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> <property name="maxPoolSize" value="30"/> <property name="minPoolSize" value="2"/> </bean> <!-- 3.让spring管理sqlsessionFactory --> <bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <!-- 指定配置文件位置 --> <property name="configLocation" value="classpath:Mybatis.xml"/> </bean> <!-- 4.自动生成dao,mapper--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.cwj.backoffice.web.mapper"/> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactoryBean"/> </bean> <!-- 配置扫描注解 --> <context:component-scan base-package="com.cwj.backoffice.web"/> <!-- 5.配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <!-- 6.开启事务注解--> <tx:annotation-driven></tx:annotation-driven> </beans> ``` Mybatis.xml代码片段 ``` <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <!-- 别名配置 --> <typeAliases> <!-- 批量配置别名:指定批量定义别名的类包,别名为类名(首字母大小写都可) --> <package name="com.cwj.backoffice.web"/> </typeAliases> <mappers> <!-- 批量加载映射文件 --> <package name="com.cwj.backoffice.web.mapper"/> </mappers> </configuration> ``` springmvcs.xml代码片段 ``` <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> <!-- 1.配置注解扫描位置 --> <context:component-scan base-package="com.cwj.backoffice.web.controller" /> <!-- 2.配置注解处理映射--> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/> <!--3.配置适配器--> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"> </bean> <!-- 4.配置springmvc视图解析器 视图解析器解析的视频路径为:前缀 + 后缀 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views" /> <property name="suffix" value=".jsp" /> </bean> </beans> ``` 测试代码片段 ``` /** * Copyright (C), 2015-2019, XXX有限公司 * FileName: CommandController * Author: 50427 * Date: 2019/5/13 11:03 * Description: * History: * <author> <time> <version> <desc> * 作者姓名 修改时间 版本号 描述 */ package com.cwj.backoffice.web.controller; import com.cwj.backoffice.web.User.Items; import com.cwj.backoffice.web.User.User; import com.cwj.backoffice.web.UserService.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import java.util.ArrayList; import java.util.List; /** * 〈一句话功能简述〉<br> * 〈〉 * * @author 50427 * @create 2019/5/13 * @since 1.0.0 */ @Controller public class CommandControllers { @Autowired private UserService service; @RequestMapping("select") public String select(Model model){ System.out.println(service); List<Items> list=service.select(); for (Items items:list) { System.out.println(items.getName()+":"+items.getPrice()); } model.addAttribute("list",list); return "/select"; } @RequestMapping("command") public String sele(User user){ System.out.println(user); return "/List"; } @RequestMapping("list") public String list(Model model) { List<User> list = new ArrayList<User>(); list.add(new User(1,"陈十二","男",18,"2019/10/1")); list.add(new User(2,"二狗子","男",18,"2019/10/1")); list.add(new User(3,"十二哟","男",18,"2019/10/1")); model.addAttribute("list",list); return "/userList"; } @RequestMapping("edit") public String useradd(int id,Model model){ User user=new User(1,"陈十二","男",18,"2019/10/1"); User user1=new User(1,"二狗子","男",18,"2019/10/1"); User user2=new User(1,"十二哟","男",18,"2019/10/1"); model.addAttribute("user",user); model.addAttribute("user",user1); model.addAttribute("user",user2); return "/useradd"; } } ``` UserMapper接口片段 ``` package com.cwj.backoffice.web.mapper; import com.cwj.backoffice.web.User.Items; import com.cwj.backoffice.web.User.User; import org.springframework.stereotype.Repository; import java.util.List; @Repository public interface UserMapper { public void save(User user); public List<Items> select(); } ``` UserMapper.xml代码 ``` <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.cwj.backoffice.web.mapper.UserMapper"> <insert id="save" parameterType="com.cwj.backoffice.web.User.User"> INSERT INTO t_user(id,username,password) values(#{id},#{username},#{password}) </insert> <select id="select" resultType="com.cwj.backoffice.web.User.Items"> SELECT * FROM t_user </select> </mapper> ``` UserServiceimp实现类的代码 ``` @Service public class UserServiceImp implements UserService { @Autowired private UserMapper userMapper; @Override public void save(User user) { userMapper.save(user); } @Override public List<Items> select() { return userMapper.select(); } } ``` Web.xml代码片段 ``` <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" version="4.0"> <servlet> <servlet-name>DispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 3.0的springmvc 默认加载WEB-INF下的dispatcher-servlet.xml文件 3.2的springmvc 加载DispatcherServlet-servlet.xml文件 --> <init-param> <!-- 修改默认springmvc加载的配置文件路径 --> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvcs.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>DispatcherServlet</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <!-- spring的配置 --> <!-- 配置的是 applicaiontContext.xml --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicaiontContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> </web-app> ``` 运行错误 ``` 浜旀湀 15, 2019 3:00:06 涓嬪崍 org.apache.catalina.core.ApplicationContext log 淇℃伅: Log4jServletContainerInitializer starting up Log4j in Servlet 3.0+ environment. 浜旀湀 15, 2019 3:00:06 涓嬪崍 org.apache.catalina.core.ApplicationContext log 淇℃伅: No Log4j context configuration provided. This is very unusual. 浜旀湀 15, 2019 3:00:06 涓嬪崍 org.apache.catalina.core.ApplicationContext log 淇℃伅: No Spring WebApplicationInitializer types detected on classpath 浜旀湀 15, 2019 3:00:06 涓嬪崍 org.apache.catalina.core.ApplicationContext log 淇℃伅: Initializing Spring root WebApplicationContext 浜旀湀 15, 2019 3:00:07 涓嬪崍 org.apache.catalina.core.ApplicationContext log 淇℃伅: Log4jServletContextListener ensuring that Log4j starts up properly. 浜旀湀 15, 2019 3:00:07 涓嬪崍 org.apache.catalina.core.ApplicationContext log 淇℃伅: Log4jServletFilter initialized. 浜旀湀 15, 2019 3:00:08 涓嬪崍 org.apache.catalina.core.ApplicationContext log 淇℃伅: Initializing Spring FrameworkServlet 'DispatcherServlet' 浜旀湀 15, 2019 3:00:08 涓嬪崍 org.apache.catalina.core.ApplicationContext log 涓ラ噸: StandardWrapper.Throwable org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0' defined in class path resource [springmvcs.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'userController' method public java.lang.String com.cwj.backoffice.web.controller.UserController.list() to {[/list]}: There is already 'commandControllers' bean method public java.lang.String com.cwj.backoffice.web.controller.CommandControllers.list(org.springframework.ui.Model) mapped. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:775) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541) at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682) at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553) at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494) at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) at javax.servlet.GenericServlet.init(GenericServlet.java:158) at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1230) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1174) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1066) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5433) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5731) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1018) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:994) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1900) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:619) at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:566) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468) at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468) at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76) at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309) at java.security.AccessController.doPrivileged(Native Method) at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1408) at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357) at sun.rmi.transport.Transport$1.run(Transport.java:200) at sun.rmi.transport.Transport$1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'userController' method public java.lang.String com.cwj.backoffice.web.controller.UserController.list() to {[/list]}: There is already 'commandControllers' bean method public java.lang.String com.cwj.backoffice.web.controller.CommandControllers.list(org.springframework.ui.Model) mapped. at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.assertUniqueMethodMapping(AbstractHandlerMethodMapping.java:570) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.register(AbstractHandlerMethodMapping.java:534) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod(AbstractHandlerMethodMapping.java:258) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:244) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:214) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:184) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:124) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) ... 66 more 浜旀湀 15, 2019 3:00:08 涓嬪崍 org.apache.catalina.core.StandardContext loadOnStartup 涓ラ噸: Servlet [DispatcherServlet] in web application [/untitled9_war_exploded] threw load() exception java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'userController' method public java.lang.String com.cwj.backoffice.web.controller.UserController.list() to {[/list]}: There is already 'commandControllers' bean method public java.lang.String com.cwj.backoffice.web.controller.CommandControllers.list(org.springframework.ui.Model) mapped. at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.assertUniqueMethodMapping(AbstractHandlerMethodMapping.java:570) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.register(AbstractHandlerMethodMapping.java:534) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod(AbstractHandlerMethodMapping.java:258) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:244) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:214) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:184) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:124) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:775) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541) at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682) at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553) at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494) at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) at javax.servlet.GenericServlet.init(GenericServlet.java:158) at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1230) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1174) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1066) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5433) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5731) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1018) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:994) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1900) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:619) at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:566) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468) at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468) at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76) at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309) at java.security.AccessController.doPrivileged(Native Method) at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1408) at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357) at sun.rmi.transport.Transport$1.run(Transport.java:200) at sun.rmi.transport.Transport$1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) 浜旀湀 15, 2019 3:00:14 涓嬪崍 org.apache.catalina.core.ApplicationContext log 淇℃伅: Initializing Spring FrameworkServlet 'DispatcherServlet' 浜旀湀 15, 2019 3:00:15 涓嬪崍 org.apache.catalina.core.ApplicationContext log 涓ラ噸: StandardWrapper.Throwable org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0' defined in class path resource [springmvcs.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'userController' method public java.lang.String com.cwj.backoffice.web.controller.UserController.list() to {[/list]}: There is already 'commandControllers' bean method public java.lang.String com.cwj.backoffice.web.controller.CommandControllers.list(org.springframework.ui.Model) mapped. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:775) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541) at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682) at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553) at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494) at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) at javax.servlet.GenericServlet.init(GenericServlet.java:158) at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1230) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1174) at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:847) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2575) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2564) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'userController' method public java.lang.String com.cwj.backoffice.web.controller.UserController.list() to {[/list]}: There is already 'commandControllers' bean method public java.lang.String com.cwj.backoffice.web.controller.CommandControllers.list(org.springframework.ui.Model) mapped. at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.assertUniqueMethodMapping(AbstractHandlerMethodMapping.java:570) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.register(AbstractHandlerMethodMapping.java:534) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod(AbstractHandlerMethodMapping.java:258) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:244) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:214) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:184) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:124) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) ... 35 more 浜旀湀 15, 2019 3:00:15 涓嬪崍 org.apache.catalina.core.StandardWrapperValve invoke 涓ラ噸: Allocate exception for servlet DispatcherServlet java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'userController' method public java.lang.String com.cwj.backoffice.web.controller.UserController.list() to {[/list]}: There is already 'commandControllers' bean method public java.lang.String com.cwj.backoffice.web.controller.CommandControllers.list(org.springframework.ui.Model) mapped. at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.assertUniqueMethodMapping(AbstractHandlerMethodMapping.java:570) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.register(AbstractHandlerMethodMapping.java:534) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod(AbstractHandlerMethodMapping.java:258) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:244) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:214) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:184) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:124) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:775) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541) at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682) at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553) at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494) at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) at javax.servlet.GenericServlet.init(GenericServlet.java:158) at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1230) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1174) at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:847) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2575) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2564) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) 浜旀湀 15, 2019 3:02:46 涓嬪崍 org.apache.catalina.core.ApplicationContext log 淇℃伅: Log4jServletFilter destroyed. 浜旀湀 15, 2019 3:02:46 涓嬪崍 org.apache.catalina.core.ApplicationContext log 淇℃伅: Log4jServletContextListener ensuring that Log4j shuts down properly. 浜旀湀 15, 2019 3:02:46 涓嬪崍 org.apache.catalina.core.ApplicationContext log 淇℃伅: Closing Spring root WebApplicationContext ``` 具体问题是什么,找了一早上了。
idea上进行SSM框架整合时Tomcat报错
![图片说明](https://img-ask.csdn.net/upload/201904/23/1555980246_127563.png) ![图片说明](https://img-ask.csdn.net/upload/201904/22/1555923887_890987.png) ![图片说明](https://img-ask.csdn.net/upload/201904/22/1555919382_173488.png) 在idea上进SSM框架整合配置时Tomcat报错运行不了,求解惑!![图片说明](https://img-ask.csdn.net/upload/201904/22/1555918379_241078.png)新更新了了详细的报错原因,有大哥帮忙看看嘛!!问题补充看了下怎么maven里的depandency全是红色波浪线??
ssm框架运维报错(数据库连接时出错)
今早发现了一个很奇怪的东西,服务器上前后测试了好几次的程序突然崩了,之前运行非常稳定,这是报错,目标是我数据库,大家有没有懂的 ``` 27-Mar-2018 07:34:41.680 严重 [https-jsse-nio2-443-exec-2] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.RecoverableDataAccessException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 32,986,781 milliseconds ago. The last packet sent successfully to the server was 32,986,781 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem. ### The error may exist in file [C:\Program Files\Apache Software Foundation\Tomcat 9.0_Tomcat9.0\webapps2\ShowHTML\WEB-INF\classes\mapper\student_infoMapper.xml] ### The error may involve com.cn.fenyu.dao.student_infoMapper.selectByExample-Inline ### The error occurred while setting parameters ### SQL: select studentID, studentpw, power, studentname from student WHERE ( studentID = ? ) ### Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 32,986,781 milliseconds ago. The last packet sent successfully to the server was 32,986,781 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem. ; SQL []; The last packet successfully received from the server was 32,986,781 milliseconds ago. The last packet sent successfully to the server was 32,986,781 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 32,986,781 milliseconds ago. The last packet sent successfully to the server was 32,986,781 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.] with root cause java.net.SocketException: Software caused connection abort: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:111) at java.net.SocketOutputStream.write(SocketOutputStream.java:155) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3964) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2596) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2776) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2838) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2082) at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1307) at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.execute(NewProxyPreparedStatement.java:989) at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:63) at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at com.github.pagehelper.PageInterceptor.intercept(PageInterceptor.java:141) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:61) at com.sun.proxy.$Proxy111.query(Unknown Source) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) at sun.reflect.GeneratedMethodAccessor72.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) at com.sun.proxy.$Proxy45.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:137) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:75) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59) at com.sun.proxy.$Proxy46.selectByExample(Unknown Source) at com.cn.fenyu.servies.MainServies.finduser(MainServies.java:34) at com.cn.fenyu.controller.MainController.indexshow(MainController.java:149) at sun.reflect.GeneratedMethodAccessor90.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:116) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ```
ssm整合单元测试时候报错Failed to load ApplicationContext
报错代码如下 严重: Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@6108b2d7] to prepare test instance [com.atguigu.crud.test.MapperTest@49b0b76] java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124) at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:228) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:247) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.context.event.internalEventListenerProcessor': BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0': Cannot resolve reference to bean 'txPoint' while setting bean property 'pointcut'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'txPoint': Failed to introspect bean class [org.springframework.aop.aspectj.AspectJExpressionPointcut] for lookup method metadata: could not find class that it depends on; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:479) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:128) at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60) at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:108) at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:251) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116) ... 25 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0': Cannot resolve reference to bean 'txPoint' while setting bean property 'pointcut'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'txPoint': Failed to introspect bean class [org.springframework.aop.aspectj.AspectJExpressionPointcut] for lookup method metadata: could not find class that it depends on; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1531) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1276) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.aop.framework.autoproxy.BeanFactoryAdvisorRetrievalHelper.findAdvisorBeans(BeanFactoryAdvisorRetrievalHelper.java:92) at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:102) at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:103) at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:248) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:1037) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:1011) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:473) ... 38 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'txPoint': Failed to introspect bean class [org.springframework.aop.aspectj.AspectJExpressionPointcut] for lookup method metadata: could not find class that it depends on; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:269) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1118) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1091) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:325) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351) ... 54 more Caused by: java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.getDeclaredMethods(Class.java:1975) at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:613) at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:524) at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:510) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:247) ... 61 more Caused by: java.lang.ClassNotFoundException: org.aspectj.weaver.reflect.ReflectionWorld$ReflectionWorldException at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 68 more 具体配置文件如下 applicationContext.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> <!-- Spring 的配置文件 --> <context:component-scan base-package="com.atguigu"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <!-- Spring的配置文件,这里主要配置和业务逻辑有关的 --> <!--=================== 数据源,事务控制,xxx ================--> <context:property-placeholder location="classpath:dbconfig.properties" /> <bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property> <property name="driverClass" value="${jdbc.driverClass}"></property> <property name="user" value="${jdbc.user}"></property> <property name="password" value="${jdbc.password}"></property> </bean> <!--================== 配置和MyBatis的整合=============== --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 指定mybatis全局配置文件的位置 --> <property name="configLocation" value="classpath:mybatis-config.xml"></property> <property name="dataSource" ref="pooledDataSource"></property> <!-- 指定mybatis,mapper文件的位置 --> <property name="mapperLocations" value="classpath:mapper/*.xml"></property> </bean> <!-- 配置扫描器,将mybatis接口的实现加入到ioc容器中 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!--扫描所有dao接口的实现,加入到ioc容器中 --> <property name="basePackage" value="com.atguigu.crud.dao"></property> </bean> <!-- 配置一个可以执行批量的sqlSession --> <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg> <constructor-arg name="executorType" value="BATCH"></constructor-arg> </bean> <!--============================================= --> <!-- ===============事务控制的配置 ================--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!--控制住数据源 --> <property name="dataSource" ref="pooledDataSource"></property> </bean> <!--开启基于注解的事务,使用xml配置形式的事务(必要主要的都是使用配置式) --> <aop:config> <!-- 切入点表达式 --> <aop:pointcut expression="execution(* com.atguigu.crud.service..*(..))" id="txPoint"/> <!-- 配置事务增强 --> <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/> </aop:config> <!--配置事务增强,事务如何切入 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 所有方法都是事务方法 --> <tx:method name="*"/> <!--以get开始的所有方法 --> <tx:method name="get*" read-only="true"/> </tx:attributes> </tx:advice> <!-- Spring配置文件的核心点(数据源、与mybatis的整合,事务控制) --> </beans> dispatcherServlet-servlet.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd"> <!--SpringMVC的配置文件,包含网站跳转逻辑的控制,配置 --> <context:component-scan base-package="com.atguigu" use-default-filters="false"> <!--只扫描控制器。 --> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!--配置视图解析器,方便页面返回 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views/"></property> <property name="suffix" value=".jsp"></property> </bean> <!--两个标准配置 --> <!-- 将springmvc不能处理的请求交给tomcat --> <mvc:default-servlet-handler/> <!-- 能支持springmvc更高级的一些功能,JSR303校验,快捷的ajax...映射动态请求 --> <mvc:annotation-driven/> </beans> mybatis-config.xml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <settings> <setting name="mapUnderscoreToCamelCase" value="true"/> </settings> <typeAliases> <package name="com.atguigu.crud.bean"/> </typeAliases> </configuration> MapperTest.java package com.atguigu.crud.test; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import com.atguigu.crud.dao.DepartmentMapper; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = {"classpath:applicationContext.xml"} ) public class MapperTest { @Autowired DepartmentMapper departmentMapper; @Test public void testCRUD() { /*ApplicationContext ioc = new ClassPathXmlApplicationContext("applicationContext.xml"); DepartmentMapper departmentMapper = ioc.getBean(DepartmentMapper.class);*/ System.out.println(departmentMapper); } } 求帮忙解决一下 困扰3天了,
用intellij idea搭建ssm框架报错,请大神看看是怎么回事
我在搭建ssm框架,用tomcat运行的时候报错了 看了很久都看不出是哪里有问题 ---------------------------------------------------------- 代码有点多,直接给出项目。 想请大神看看是怎么回事。 链接:https://pan.baidu.com/s/1qKoV8P91DxHBFHkip1jmaw 提取码:mmkc
服务器启动报错,ssm项目
ssm的架构,启动服务器一直报错照着以前做的项目搭的,不知道为什么一直报错![图片说明](https://img-ask.csdn.net/upload/201712/07/1512618077_776547.jpg)
ssm框架新版本使用报错
我用的win10+MyEclipse2016+jdk1.8+spring4.2.4+MyBatis3.3的ssm框架的web应用总是在访问action时报错 ``` HTTP Status 500 - Request processing failed; nested exception is org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user 'root'@'localhost' (using password: YES)) ``` ,但是在低版本的jdk和lib下项目没有任何问题,换成新版本就出错了,找了好长时间没有找到答案,大家有没有遇到过,或者可以用的ssm高版本的lib分享一下
配置ssm项目配置aop后报错
之前没错 配置aop就报错 只配置通知也不报错 ![![图片说明](https://img-ask.csdn.net/upload/201711/07/1510040272_913840.png)图片说明](https://img-ask.csdn.net/upload/201711/07/1510040262_23765.png)
初学ssm 启动tomcat报错
![目录结构](https://img-ask.csdn.net/upload/201705/16/1494947395_751904.png) 报错: 五月 16, 2017 11:00:54 下午 org.apache.catalina.core.StandardContext listenerStart 严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in ServletContext resource [/WEB-INF/classes/spring/applicationContext-dao.xml]: Invocation of init method failed; nested exception is java.io.FileNotFoundException: Could not open ServletContext resource [/WEB-INF/classes/mybatis/sqlMapConfig.xml] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1486) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:524) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:589) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5118) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5634) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.io.FileNotFoundException: Could not open ServletContext resource [/WEB-INF/classes/mybatis/sqlMapConfig.xml] at org.springframework.web.context.support.ServletContextResource.getInputStream(ServletContextResource.java:140) at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:358) at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:340) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1545) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1483) ... 21 more
爬虫福利二 之 妹子图网MM批量下载
爬虫福利一:27报网MM批量下载    点击 看了本文,相信大家对爬虫一定会产生强烈的兴趣,激励自己去学习爬虫,在这里提前祝:大家学有所成! 目标网站:妹子图网 环境:Python3.x 相关第三方模块:requests、beautifulsoup4 Re:各位在测试时只需要将代码里的变量 path 指定为你当前系统要保存的路径,使用 python xxx.py 或IDE运行即可。
Java学习的正确打开方式
在博主认为,对于入门级学习java的最佳学习方法莫过于视频+博客+书籍+总结,前三者博主将淋漓尽致地挥毫于这篇博客文章中,至于总结在于个人,实际上越到后面你会发现学习的最好方式就是阅读参考官方文档其次就是国内的书籍,博客次之,这又是一个层次了,这里暂时不提后面再谈。博主将为各位入门java保驾护航,各位只管冲鸭!!!上天是公平的,只要不辜负时间,时间自然不会辜负你。 何谓学习?博主所理解的学习,它
程序员必须掌握的核心算法有哪些?
由于我之前一直强调数据结构以及算法学习的重要性,所以就有一些读者经常问我,数据结构与算法应该要学习到哪个程度呢?,说实话,这个问题我不知道要怎么回答你,主要取决于你想学习到哪些程度,不过针对这个问题,我稍微总结一下我学过的算法知识点,以及我觉得值得学习的算法。这些算法与数据结构的学习大多数是零散的,并没有一本把他们全部覆盖的书籍。下面是我觉得值得学习的一些算法以及数据结构,当然,我也会整理一些看过
大学四年自学走来,这些私藏的实用工具/学习网站我贡献出来了
大学四年,看课本是不可能一直看课本的了,对于学习,特别是自学,善于搜索网上的一些资源来辅助,还是非常有必要的,下面我就把这几年私藏的各种资源,网站贡献出来给你们。主要有:电子书搜索、实用工具、在线视频学习网站、非视频学习网站、软件下载、面试/求职必备网站。 注意:文中提到的所有资源,文末我都给你整理好了,你们只管拿去,如果觉得不错,转发、分享就是最大的支持了。 一、PDF搜索网站推荐 对于大部
linux系列之常用运维命令整理笔录
本博客记录工作中需要的linux运维命令,大学时候开始接触linux,会一些基本操作,可是都没有整理起来,加上是做开发,不做运维,有些命令忘记了,所以现在整理成博客,当然vi,文件操作等就不介绍了,慢慢积累一些其它拓展的命令,博客不定时更新 顺便拉下票,我在参加csdn博客之星竞选,欢迎投票支持,每个QQ或者微信每天都可以投5票,扫二维码即可,http://m234140.nofollow.ax.
比特币原理详解
一、什么是比特币 比特币是一种电子货币,是一种基于密码学的货币,在2008年11月1日由中本聪发表比特币白皮书,文中提出了一种去中心化的电子记账系统,我们平时的电子现金是银行来记账,因为银行的背后是国家信用。去中心化电子记账系统是参与者共同记账。比特币可以防止主权危机、信用风险。其好处不多做赘述,这一层面介绍的文章很多,本文主要从更深层的技术原理角度进行介绍。 二、问题引入  假设现有4个人
程序员接私活怎样防止做完了不给钱?
首先跟大家说明一点,我们做 IT 类的外包开发,是非标品开发,所以很有可能在开发过程中会有这样那样的需求修改,而这种需求修改很容易造成扯皮,进而影响到费用支付,甚至出现做完了项目收不到钱的情况。 那么,怎么保证自己的薪酬安全呢? 我们在开工前,一定要做好一些证据方面的准备(也就是“讨薪”的理论依据),这其中最重要的就是需求文档和验收标准。一定要让需求方提供这两个文档资料作为开发的基础。之后开发
网页实现一个简单的音乐播放器(大佬别看。(⊙﹏⊙))
今天闲着无事,就想写点东西。然后听了下歌,就打算写个播放器。 于是乎用h5 audio的加上js简单的播放器完工了。 欢迎 改进 留言。 演示地点跳到演示地点 html代码如下`&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;music&lt;/title&gt; &lt;meta charset="utf-8"&gt
Python十大装B语法
Python 是一种代表简单思想的语言,其语法相对简单,很容易上手。不过,如果就此小视 Python 语法的精妙和深邃,那就大错特错了。本文精心筛选了最能展现 Python 语法之精妙的十个知识点,并附上详细的实例代码。如能在实战中融会贯通、灵活使用,必将使代码更为精炼、高效,同时也会极大提升代码B格,使之看上去更老练,读起来更优雅。 1. for - else 什么?不是 if 和 else 才
数据库优化 - SQL优化
前面一篇文章从实例的角度进行数据库优化,通过配置一些参数让数据库性能达到最优。但是一些“不好”的SQL也会导致数据库查询变慢,影响业务流程。本文从SQL角度进行数据库优化,提升SQL运行效率。 判断问题SQL 判断SQL是否有问题时可以通过两个表象进行判断: 系统级别表象 CPU消耗严重 IO等待严重 页面响应时间过长
2019年11月中国大陆编程语言排行榜
2019年11月2日,我统计了某招聘网站,获得有效程序员招聘数据9万条。针对招聘信息,提取编程语言关键字,并统计如下: 编程语言比例 rank pl_ percentage 1 java 33.62% 2 c/c++ 16.42% 3 c_sharp 12.82% 4 javascript 12.31% 5 python 7.93% 6 go 7.25% 7
通俗易懂地给女朋友讲:线程池的内部原理
餐厅的约会 餐盘在灯光的照耀下格外晶莹洁白,女朋友拿起红酒杯轻轻地抿了一小口,对我说:“经常听你说线程池,到底线程池到底是个什么原理?”我楞了一下,心里想女朋友今天是怎么了,怎么突然问出这么专业的问题,但做为一个专业人士在女朋友面前也不能露怯啊,想了一下便说:“我先给你讲讲我前同事老王的故事吧!” 大龄程序员老王 老王是一个已经北漂十多年的程序员,岁数大了,加班加不动了,升迁也无望,于是拿着手里
经典算法(5)杨辉三角
写在前面: 我是 扬帆向海,这个昵称来源于我的名字以及女朋友的名字。我热爱技术、热爱开源、热爱编程。技术是开源的、知识是共享的。 这博客是对自己学习的一点点总结及记录,如果您对 Java、算法 感兴趣,可以关注我的动态,我们一起学习。 用知识改变命运,让我们的家人过上更好的生活。 目录一、杨辉三角的介绍二、杨辉三角的算法思想三、代码实现1.第一种写法2.第二种写法 一、杨辉三角的介绍 百度
腾讯算法面试题:64匹马8个跑道需要多少轮才能选出最快的四匹?
昨天,有网友私信我,说去阿里面试,彻底的被打击到了。问了为什么网上大量使用ThreadLocal的源码都会加上private static?他被难住了,因为他从来都没有考虑过这个问题。无独有偶,今天笔者又发现有网友吐槽了一道腾讯的面试题,我们一起来看看。 腾讯算法面试题:64匹马8个跑道需要多少轮才能选出最快的四匹? 在互联网职场论坛,一名程序员发帖求助到。二面腾讯,其中一个算法题:64匹
面试官:你连RESTful都不知道我怎么敢要你?
面试官:了解RESTful吗? 我:听说过。 面试官:那什么是RESTful? 我:就是用起来很规范,挺好的 面试官:是RESTful挺好的,还是自我感觉挺好的 我:都挺好的。 面试官:… 把门关上。 我:… 要干嘛?先关上再说。 面试官:我说出去把门关上。 我:what ?,夺门而去 文章目录01 前言02 RESTful的来源03 RESTful6大原则1. C-S架构2. 无状态3.统一的接
为啥国人偏爱Mybatis,而老外喜欢Hibernate/JPA呢?
关于SQL和ORM的争论,永远都不会终止,我也一直在思考这个问题。昨天又跟群里的小伙伴进行了一番讨论,感触还是有一些,于是就有了今天这篇文。 声明:本文不会下关于Mybatis和JPA两个持久层框架哪个更好这样的结论。只是摆事实,讲道理,所以,请各位看官勿喷。 一、事件起因 关于Mybatis和JPA孰优孰劣的问题,争论已经很多年了。一直也没有结论,毕竟每个人的喜好和习惯是大不相同的。我也看
SQL-小白最佳入门sql查询一
一 说明 如果是初学者,建议去网上寻找安装Mysql的文章安装,以及使用navicat连接数据库,以后的示例基本是使用mysql数据库管理系统; 二 准备前提 需要建立一张学生表,列分别是id,名称,年龄,学生信息;本示例中文章篇幅原因SQL注释略; 建表语句: CREATE TABLE `student` ( `id` int(11) NOT NULL AUTO_INCREMENT, `
项目中的if else太多了,该怎么重构?
介绍 最近跟着公司的大佬开发了一款IM系统,类似QQ和微信哈,就是聊天软件。我们有一部分业务逻辑是这样的 if (msgType = "文本") { // dosomething } else if(msgType = "图片") { // doshomething } else if(msgType = "视频") { // doshomething } else { // dosho
【图解经典算法题】如何用一行代码解决约瑟夫环问题
约瑟夫环问题算是很经典的题了,估计大家都听说过,然后我就在一次笔试中遇到了,下面我就用 3 种方法来详细讲解一下这道题,最后一种方法学了之后保证让你可以让你装逼。 问题描述:编号为 1-N 的 N 个士兵围坐在一起形成一个圆圈,从编号为 1 的士兵开始依次报数(1,2,3…这样依次报),数到 m 的 士兵会被杀死出列,之后的士兵再从 1 开始报数。直到最后剩下一士兵,求这个士兵的编号。 1、方
致 Python 初学者
文章目录1. 前言2. 明确学习目标,不急于求成,不好高骛远3. 在开始学习 Python 之前,你需要做一些准备2.1 Python 的各种发行版2.2 安装 Python2.3 选择一款趁手的开发工具3. 习惯使用IDLE,这是学习python最好的方式4. 严格遵从编码规范5. 代码的运行、调试5. 模块管理5.1 同时安装了py2/py35.2 使用Anaconda,或者通过IDE来安装模
“狗屁不通文章生成器”登顶GitHub热榜,分分钟写出万字形式主义大作
一、垃圾文字生成器介绍 最近在浏览GitHub的时候,发现了这样一个骨骼清奇的雷人项目,而且热度还特别高。 项目中文名:狗屁不通文章生成器 项目英文名:BullshitGenerator 根据作者的介绍,他是偶尔需要一些中文文字用于GUI开发时测试文本渲染,因此开发了这个废话生成器。但由于生成的废话实在是太过富于哲理,所以最近已经被小伙伴们给玩坏了。 他的文风可能是这样的: 你发现,
程序员:我终于知道post和get的区别
IT界知名的程序员曾说:对于那些月薪三万以下,自称IT工程师的码农们,其实我们从来没有把他们归为我们IT工程师的队伍。他们虽然总是以IT工程师自居,但只是他们一厢情愿罢了。 此话一出,不知激起了多少(码农)程序员的愤怒,却又无可奈何,于是码农问程序员。 码农:你知道get和post请求到底有什么区别? 程序员:你看这篇就知道了。 码农:你月薪三万了? 程序员:嗯。 码农:你是怎么做到的? 程序员:
《程序人生》系列-这个程序员只用了20行代码就拿了冠军
你知道的越多,你不知道的越多 点赞再看,养成习惯GitHub上已经开源https://github.com/JavaFamily,有一线大厂面试点脑图,欢迎Star和完善 前言 这一期不算《吊打面试官》系列的,所有没前言我直接开始。 絮叨 本来应该是没有这期的,看过我上期的小伙伴应该是知道的嘛,双十一比较忙嘛,要值班又要去帮忙拍摄年会的视频素材,还得搞个程序员一天的Vlog,还要写BU
加快推动区块链技术和产业创新发展,2019可信区块链峰会在京召开
      11月8日,由中国信息通信研究院、中国通信标准化协会、中国互联网协会、可信区块链推进计划联合主办,科技行者协办的2019可信区块链峰会将在北京悠唐皇冠假日酒店开幕。   区块链技术被认为是继蒸汽机、电力、互联网之后,下一代颠覆性的核心技术。如果说蒸汽机释放了人类的生产力,电力解决了人类基本的生活需求,互联网彻底改变了信息传递的方式,区块链作为构造信任的技术有重要的价值。   1
程序员把地府后台管理系统做出来了,还有3.0版本!12月7号最新消息:已在开发中有github地址
第一幕:缘起 听说阎王爷要做个生死簿后台管理系统,我们派去了一个程序员…… 996程序员做的梦: 第一场:团队招募 为了应对地府管理危机,阎王打算找“人”开发一套地府后台管理系统,于是就在地府总经办群中发了项目需求。 话说还是中国电信的信号好,地府都是满格,哈哈!!! 经常会有外行朋友问:看某网站做的不错,功能也简单,你帮忙做一下? 而这次,面对这样的需求,这个程序员
网易云6亿用户音乐推荐算法
网易云音乐是音乐爱好者的集聚地,云音乐推荐系统致力于通过 AI 算法的落地,实现用户千人千面的个性化推荐,为用户带来不一样的听歌体验。 本次分享重点介绍 AI 算法在音乐推荐中的应用实践,以及在算法落地过程中遇到的挑战和解决方案。 将从如下两个部分展开: AI 算法在音乐推荐中的应用 音乐场景下的 AI 思考 从 2013 年 4 月正式上线至今,网易云音乐平台持续提供着:乐屏社区、UGC
【技巧总结】位运算装逼指南
位算法的效率有多快我就不说,不信你可以去用 10 亿个数据模拟一下,今天给大家讲一讲位运算的一些经典例子。不过,最重要的不是看懂了这些例子就好,而是要在以后多去运用位运算这些技巧,当然,采用位运算,也是可以装逼的,不信,你往下看。我会从最简单的讲起,一道比一道难度递增,不过居然是讲技巧,那么也不会太难,相信你分分钟看懂。 判断奇偶数 判断一个数是基于还是偶数,相信很多人都做过,一般的做法的代码如下
日均350000亿接入量,腾讯TubeMQ性能超过Kafka
整理 | 夕颜出品 | AI科技大本营(ID:rgznai100) 【导读】近日,腾讯开源动作不断,相继开源了分布式消息中间件TubeMQ,基于最主流的 OpenJDK8开发的
8年经验面试官详解 Java 面试秘诀
    作者 | 胡书敏 责编 | 刘静 出品 | CSDN(ID:CSDNnews) 本人目前在一家知名外企担任架构师,而且最近八年来,在多家外企和互联网公司担任Java技术面试官,前后累计面试了有两三百位候选人。在本文里,就将结合本人的面试经验,针对Java初学者、Java初级开发和Java开发,给出若干准备简历和准备面试的建议。   Java程序员准备和投递简历的实
面试官如何考察你的思维方式?
1.两种思维方式在求职面试中,经常会考察这种问题:北京有多少量特斯拉汽车? 某胡同口的煎饼摊一年能卖出多少个煎饼? 深圳有多少个产品经理? 一辆公交车里能装下多少个乒乓球? 一
相关热词 c# 二进制截断字符串 c#实现窗体设计器 c#检测是否为微信 c# plc s1200 c#里氏转换原则 c# 主界面 c# do loop c#存为组套 模板 c# 停掉协程 c# rgb 读取图片
立即提问