springboot配置文件代码提示

采用eclipse的spring boot插件建立项目,配置文件application.properties不能自动提示代码,按alt+/也没有反应是怎么回事呀?

3个回答

在pom中引入

org.springframework.boot
spring-boot-configuration-processor
true

配置文件上添加注解@ConfigurationProperties(prefix="xxx")

没遇到过。。。idea是可以的,你试试idea...

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>

配置文件上添加注解

 @ConfigurationProperties(prefix="xxx")
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Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. 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org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:152) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:132) at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:92) at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:172) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5030) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ... 38 more Caused by: java.io.FileNotFoundException: Could not open ServletContext resource [/config.properties] at org.springframework.web.context.support.ServletContextResource.getInputStream(ServletContextResource.java:159) at org.springframework.core.io.support.EncodedResource.getReader(EncodedResource.java:143) at org.springframework.core.io.support.PropertiesLoaderUtils.fillProperties(PropertiesLoaderUtils.java:95) at org.springframework.core.io.support.PropertiesLoaderUtils.fillProperties(PropertiesLoaderUtils.java:73) at org.springframework.core.io.support.PropertiesLoaderUtils.loadProperties(PropertiesLoaderUtils.java:59) at org.springframework.core.io.support.ResourcePropertySource.<init>(ResourcePropertySource.java:67) at org.springframework.core.io.support.DefaultPropertySourceFactory.createPropertySource(DefaultPropertySourceFactory.java:37) at org.springframework.context.annotation.ConfigurationClassParser.processPropertySource(ConfigurationClassParser.java:455) at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:274) at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:245) at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:194) at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:298) at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:245) at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:202) at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:170) ... 54 more 20-Jan-2020 19:55:52.471 严重 [main] org.apache.catalina.startup.HostConfig.deployWAR Error deploying web application archive 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org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:772) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:426) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1586) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:308) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:424) at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:367) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:966) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.startup.Catalina.start(Catalina.java:682) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at 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![图片说明](https://img-ask.csdn.net/upload/201908/14/1565777159_224084.png) ``` package com.liupeng; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import tk.mybatis.spring.annotation.MapperScan; @SpringBootApplication() @MapperScan(basePackages = "com.liupeng.mapper") public class Application { public static void main(String[] args) { SpringApplication.run(Application.class,args); } } ``` ``` package com.liupeng.service; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.liupeng.mapper.UserMapper; import com.liupeng.pojo.User; @Service(value = "Userservice") public class UserServiceImpl implements Userservice { @Autowired private UserMapper userMapper; @Override public User getNamePassword(User user) { // TODO Auto-generated method stub return userMapper.selectgetNamePassword(user); } @Override public void saveUser(User user) { // TODO Auto-generated method stub } } ``` mapper.xml ``` <?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.liupeng.mapper.UserMapper"> ``` ``` #------------------配置虚拟文件路径--start------------------------------ spring.http.multipart.location=E:\Java\java代码\Chaoyang\src\main\resources #-----------------------------------------数据库--start---------------------- spring.datasource.driver-class-name=com.mysql.cj.jdbc.Drive spring.datasource.url=jdbc:mysql://localhost:3306/ssm_mybatis?serverTimezone=GMT spring.datasource.username=root spring.datasource.password=liupeng.123 spring.datasource.druid.stat-view-servlet.allow=true #获取连接等待超时时间 spring.datasource.dbcp2.max-wait-millis=60000 #mybatis配置 mybatis.type-aliases-package=com.liupeng.pojo mybatis.mapper-locations=classpath:mapper/*.xml #通用Mapper配置 #mapper.mappers=com.liupeng.utils.MyMapper #mapper.not-empty=false #mapper.identity=MYSQL #分页插件配置 pagehelper.helperDialect=mysq1 pagehelper.reasonable=true pagehelper.supportMethodsArguments=true pagehelper.params=count=countSql #文件上传配置 spring.http.multipart.maxFileSize=100Mb spring.http.multipart.maxRequestSize=1000Mb #配置api端口号 server.port=8080 #tomcat的URI编码 server.tomcat.uri-encoding=UTF-8 ``` ``` ERROR [main] - Application startup failed org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'registLoginController': Unsatisfied dependency expressed through field 'userservice'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'Userservice': Unsatisfied dependency expressed through field 'userMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userMapper' defined in file [E:\Java\java代码\Chaoyang\target\classes\com\liupeng\mapper\UserMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [tk/mybatis/mapper/autoconfigure/MapperAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:586) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:364) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1268) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:756) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:123) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:666) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:353) at org.springframework.boot.SpringApplication.run(SpringApplication.java:300) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1082) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1071) at com.liupeng.Application.main(Application.java:13) Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'Userservice': Unsatisfied dependency expressed through field 'userMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userMapper' defined in file [E:\Java\java代码\Chaoyang\target\classes\com\liupeng\mapper\UserMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [tk/mybatis/mapper/autoconfigure/MapperAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:586) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:364) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1268) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:211) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1131) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1059) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:583) ... 19 more Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userMapper' defined in file [E:\Java\java代码\Chaoyang\target\classes\com\liupeng\mapper\UserMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [tk/mybatis/mapper/autoconfigure/MapperAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1361) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1253) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:211) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1131) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1059) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:583) ... 32 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [tk/mybatis/mapper/autoconfigure/MapperAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1177) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1072) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:511) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:211) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1131) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1059) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1346) ... 43 more Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ... 55 more Caused by: org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:523) at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:380) at org.mybatis.spring.SqlSessionFactoryBean.getObject(SqlSessionFactoryBean.java:547) at tk.mybatis.mapper.autoconfigure.MapperAutoConfiguration.sqlSessionFactory(MapperAutoConfiguration.java:155) at tk.mybatis.mapper.autoconfigure.MapperAutoConfiguration$$EnhancerBySpringCGLIB$$90d064bb.CGLIB$sqlSessionFactory$1(<generated>) at tk.mybatis.mapper.autoconfigure.MapperAutoConfiguration$$EnhancerBySpringCGLIB$$90d064bb$$FastClassBySpringCGLIB$$b0514ca6.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358) at tk.mybatis.mapper.autoconfigure.MapperAutoConfiguration$$EnhancerBySpringCGLIB$$90d064bb.sqlSessionFactory(<generated>) 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.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ... 56 more Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120) at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92) at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:521) ... 69 more Caused by: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:872) at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:844) at org.apache.ibatis.session.Configuration.addResultMap(Configuration.java:626) at org.apache.ibatis.builder.MapperBuilderAssistant.addResultMap(MapperBuilderAssistant.java:214) at org.apache.ibatis.builder.ResultMapResolver.resolve(ResultMapResolver.java:47) at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:285) at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:252) at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElements(XMLMapperBuilder.java:244) at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:116) ... 71 more ```

所有的spring boot项目的yml都变成灰色或者表格了,又不影响运行,就是敲代码的时候没提示,问下大佬怎么解决

我所有的spring boot项目的yml都变成灰色或者表格了,但又不影响运行,就是敲代码的时候没提示,问下大佬怎么解决![图片说明](https://img-ask.csdn.net/upload/202004/01/1585712223_48628.png)

eclipse查看源码配置不生效

![图片说明](https://img-ask.csdn.net/upload/201901/10/1547106524_486686.png)![图片说明](https://img-ask.csdn.net/upload/201901/10/1547106532_557520.png) eclipse工具配置依赖jar包对应的源码source包,但是配置完紧接着再打开配置界面,之前配置的源码包路径就没了,有人遇到这种问题吗,感觉就像配置不生效,或者是哪边的默认配置始终在生效似的

spring boot 整合mybatis-generator如何搭建和配置

自己搭建了两个demo,按照网上的提示,最终都报 Exception getting jdbc driver, 我用的mysql,驱动依赖都有,因为不用mybatis-generator是能够运行的,可以与数据库连接实现简单的DQL和DML语句, 这是我的项目结构![图片说明](https://img-ask.csdn.net/upload/201711/15/1510712201_232957.png) 下面这是我的generatorConfig.xml文件的配置, <context id="MySQLTables"> <commentGenerator> <property name="suppressDate" value="true" /> <property name="suppressAllComments" value="false" /> </commentGenerator> <!--数据库链接地址账号密码 --> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/mydb" userId="root" password="root" /> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!--生成Model类存放位置 --> <javaModelGenerator targetPackage="com.doudo.pojo" targetProject="src/main/java"> <property name="enableSubPackages" value="true" /> <property name="trimStrings" value="true" /> </javaModelGenerator> <!--生成映射文件存放位置 --> <sqlMapGenerator targetPackage="com.doudo.mapper" targetProject="src/main/java"> <property name="enableSubPackages" value="true" /> </sqlMapGenerator> <javaClientGenerator type="XMLMAPPER" targetPackage="com.doudo.mapper" targetProject="src/main/java"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!--生成对应表及类名 --> <table tableName="user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> 下面这是pom.xml代码 <name>AdminLTE</name> <description></description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.8.RELEASE</version> <relativePath /> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-freemarker</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>net.sourceforge.nekohtml</groupId> <artifactId>nekohtml</artifactId> <version>1.9.21</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.3.5</version> <dependencies> <dependency> <groupId> mysql</groupId> <artifactId> mysql-connector-java</artifactId> <version> 5.1.39</version> </dependency> <dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.5</version> </dependency> </dependencies> <executions> <execution> <id>Generate MyBatis Artifacts</id> <phase>package</phase> <goals> <goal>generate</goal> </goals> </execution> </executions> <configuration> <!--允许移动生成的文件 --> <verbose>true</verbose> <!-- 是否覆盖 --> <overwrite>true</overwrite> <!-- 自动生成的配置 --> <configurationFile>src/main/resources/mybatis-generator.xml</configurationFile> </configuration> </plugin> </plugins> </build>

InteliJ IDEA中自定义YML属性中文提示乱码问题

在SpringBoot中,使用了`@ConfigurationProperties`注解自定义配置类,并引入`spring-boot-configuration-processor`jar包。在类的字段上作了注释,然后在yml中写配置时就会有提示。 ```java @Data @ConfigurationProperties(prefix = "juzi") public class MyProjectProperties { /** * 中国志愿网 */ private ChinaVolunteerProperties volunteer; } ``` 使用过程中发现注释如果是中文就会乱码,现象如图 ![](https://juzibiji-img.juzibiji.top/img/Snipaste_2019-03-27_16-57-10.png) 经过自己研究,发现原因如下: 之所以能有代码提示,是因为`spring-boot-configuration-processor`生成了一个`spring-configuration-metadata.json`文件,在`target/classes/MATE-INF`目录下。该文件编码格式为UTF-8,但是IDEA在读取此文件时使用的是GBK编码(Windows10 环境下)。所以就造成了中文乱码的问题。 ![](https://juzibiji-img.juzibiji.top/img/Snipaste_2019-03-27_16-57-19.png) 现在想到的解决办法就2个: - 将`spring-configuration-metadata.json`生成的编码格式改为GBK - 修改IDEA读取`spring-configuration-metadata.json`文件时使用的编码为UTF-8 **但是两种方法都不知道应该怎么实现,不知道有没有遇到过此问题的大佬**

IDEA无法下载源码问题

本人学习springboot过程中用IDEA创建了一个搜springboot项目,但是发现使用ctrl点击鼠标左键无法下载查看除jdk源码之外的jar包源码。 如图所示 ![图片说明](https://img-ask.csdn.net/upload/201911/26/1574733141_731663.jpg) 百度过之后网上的回答大多是在pom文件根路径下执行mvn dependency:resolve -Dclassifier=sources即可 我在pom文件路径下执行了之后显示![图片说明](https://img-ask.csdn.net/upload/201911/26/1574733272_622821.jpg) Downloading:http:// 那句的意思是不是在后面的私服地址下载源码?如果是,我这个项目没有使用配置了私服的setting配置文件,是使用的配置了阿里云仓库的配置文件啊。 这是为啥呢,是不是 IDEA里有哪些关于源码下载路径的全局配置的设置,百度了好多,实在不知道怎么解决了。 没有分了,不好意思,没法打赏了。

springboot结合kafka时0毫秒关闭消息生产者

自己在做springboot结合kafka的时候,运行消息生产者,结果console显示了生产者的相关配置以及提示生产者在0毫秒内关闭了消息生产者,然后生产者发送消息失败。想请问下各位大佬这到底是是配置文件的问题还是消息生产者发送消息的时候出现了问题啊。 消息发送者代码: @Component @EnableKafka public class MessageSender { @Autowired private KafkaTemplate<String,String> kafkaTemplate; //private static final MessageSender sender=new MessageSender(); /* * * kafka客户端发送消息 * @param topic 主题 * @param message 消息内容 * @return*/ public boolean sendMessage(String topic,String message) { try { System.out.println("topic"+topic+"message"+message); kafkaTemplate.send(topic, message); } catch (Exception e) { return false; } return true; } } 控制台具体信息如下: 2019-07-09 22:43:34.008 INFO 7916 --- [nio-8080-exec-1] o.a.k.clients.producer.ProducerConfig : ProducerConfig values: acks = 1 batch.size = 65536 bootstrap.servers = [192.168.2.2:9092] buffer.memory = 524288 client.id = compression.type = none connections.max.idle.ms = 540000 enable.idempotence = false interceptor.classes = null key.serializer = class org.apache.kafka.common.serialization.StringDeserializer linger.ms = 0 max.block.ms = 60000 max.in.flight.requests.per.connection = 5 max.request.size = 1048576 metadata.max.age.ms = 300000 metric.reporters = [] metrics.num.samples = 2 metrics.recording.level = INFO metrics.sample.window.ms = 30000 partitioner.class = class org.apache.kafka.clients.producer.internals.DefaultPartitioner receive.buffer.bytes = 32768 reconnect.backoff.max.ms = 1000 reconnect.backoff.ms = 50 request.timeout.ms = 30000 retries = 0 retry.backoff.ms = 100 sasl.jaas.config = null sasl.kerberos.kinit.cmd = /usr/bin/kinit sasl.kerberos.min.time.before.relogin = 60000 sasl.kerberos.service.name = null sasl.kerberos.ticket.renew.jitter = 0.05 sasl.kerberos.ticket.renew.window.factor = 0.8 sasl.mechanism = GSSAPI security.protocol = PLAINTEXT send.buffer.bytes = 131072 ssl.cipher.suites = null ssl.enabled.protocols = [TLSv1.2, TLSv1.1, TLSv1] ssl.endpoint.identification.algorithm = null ssl.key.password = null ssl.keymanager.algorithm = SunX509 ssl.keystore.location = null ssl.keystore.password = null ssl.keystore.type = JKS ssl.protocol = TLS ssl.provider = null ssl.secure.random.implementation = null ssl.trustmanager.algorithm = PKIX ssl.truststore.location = null ssl.truststore.password = null ssl.truststore.type = JKS transaction.timeout.ms = 60000 transactional.id = null value.serializer = class org.apache.kafka.common.serialization.StringDeserializer 2019-07-09 22:43:34.019 INFO 7916 --- [nio-8080-exec-1] o.a.k.clients.producer.KafkaProducer : [Producer clientId=producer-1] Closing the Kafka producer with timeoutMillis = 0 ms. 2019-07-09 22:43:34.040 DEBUG 7916 --- [nio-8080-exec-1] o.s.b.w.s.f.OrderedRequestContextFilter : Cleared thread-bound request context: org.apache.catalina.connector.RequestFacade@2e251d9f 2019-07-09 22:43:34.077 DEBUG 7916 --- [nio-8080-exec-2] o.s.b.w.s.f.OrderedRequestContextFilter : Bound request context to thread: org.apache.catalina.connector.RequestFacade@2e251d9f 2019-07-09 22:43:34.112 DEBUG 7916 --- [nio-8080-exec-2] o.s.b.w.s.f.OrderedRequestContextFilter : Cleared thread-bound request context: org.apache.catalina.connector.RequestFacade@2e251d9f ``` ```

SpringCloud项目集成阿里云nacos配置管理后 启动报错

SpringBoot项目改SpringCloud项目,没集成alibaba nacos时运行无异常,集成了之后启动报错,提示找不到相关bean,但是功能却是正常的。 云配置文件是加载到了的 ![报错示意](https://img-ask.csdn.net/upload/201911/14/1573717658_234284.png) ![配置](https://img-ask.csdn.net/upload/201911/14/1573717700_562227.png) ![配置](https://img-ask.csdn.net/upload/201911/14/1573717710_263011.png) 报错内容: ``` 2019-11-14 15:31:28 [ com.alibaba.nacos.client.Worker.longPullingacm.aliyun.com-32f1587d-47d1-4060-bf86-870b0d47c500:17212 ] - [ WARN ] org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:558) Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'invoiceCallbackApiController': Unsatisfied dependency expressed through field 'invoiceCallbackProducer'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'yongYouInvoiceCallbackProducer': Unsatisfied dependency expressed through field 'amqpTemplate'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.amqp.core.AmqpTemplate' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} 2019-11-14 15:31:28 [ com.alibaba.nacos.client.Worker.longPullingacm.aliyun.com-32f1587d-47d1-4060-bf86-870b0d47c500:17220 ] - [ ERROR ] org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter.report(LoggingFailureAnalysisReporter.java:42) *************************** APPLICATION FAILED TO START *************************** Description: Field amqpTemplate in cn.xxx.invoice.service.rabbitmq.producer.YongYouInvoiceCallbackProducer required a bean of type 'org.springframework.amqp.core.AmqpTemplate' that could not be found. Action: Consider defining a bean of type 'org.springframework.amqp.core.AmqpTemplate' in your configuration. ```

本地代码跑没有问题,部署到服务器报错,提示404路径不对

![图片说明](https://img-ask.csdn.net/upload/201803/14/1521021289_910892.png) ![图片说明](https://img-ask.csdn.net/upload/201803/14/1521021304_80060.png) ![图片说明](https://img-ask.csdn.net/upload/201803/14/1521021311_284639.png)

xml配置与Autowired注解混合

使用xml文件配置Bean,然后不想使用property标签来设置属性值,想使用Autowired注解来注解属性。请问这样可以实现吗?我自己测试了一下发现,一直提示NullPointerException异常。代码如下: -------------------------------------------------------------------------------------------------------------------------------------------------------- xml配置文件: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean class="com.nrdesire.xml.SgtPeppers" id="sgtPeppers"></bean> <bean class="com.nrdesire.xml.CDPlayer" id="cdPlayer"> </bean> <bean class="com.nrdesire.xml.Test" id="test"> </bean> </beans> -------------------------------------------------------------------------------------------------------------------------------------------------------- 代码Test.java: package com.nrdesire.xml; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import javax.annotation.Resource; class Factory{ public Test test; public Factory(){ ApplicationContext context = new ClassPathXmlApplicationContext("classpath:xmd.xml"); test = (Test) context.getBean("test"); } } public class Test { @Autowired private CompactDisc cd; @Autowired private CDPlayer player; public static void main(String[] args){ Factory factory = new Factory(); factory.test.cd.play(); factory.test.player.play(); } } -------------------------------------------------------------------------------------------------------------------------------------------------------- 代码CompactDisc.java: package com.nrdesire.xml; public interface CompactDisc { void play(); } -------------------------------------------------------------------------------------------------------------------------------------------------------- 代码SgtPeppers.java: package com.nrdesire.xml; public class SgtPeppers implements CompactDisc { @Override public void play() { System.out.println("shuangge!"); } } -------------------------------------------------------------------------------------------------------------------------------------------------------- package com.nrdesire.xml; import org.springframework.beans.factory.annotation.Autowired; import javax.annotation.Resource; public class CDPlayer { @Autowired private CompactDisc cd; public void play(){ cd.play(); } } -------------------------------------------------------------------------------------------------------------------------------------------------------- 百度了好多都没有相应的资源,这本书后续说的也是java代码配置方式和xml配置方式的混用,唯独没提到过我想的这种情况。 使用xml属性配置然后设置属性的set方法之后可以跑起来。但是去掉xml属性配置和属性set方法而是换成Autowired注解跑不起来!这种方法可行不?

Spring mvc 使用多种viewResolver的问题

问题大概是这样的:我配置了两个viewResovler: [code="java"] <bean id="velocityConfigurer" class="org.springframework.web.servlet.view.velocity.VelocityConfigurer"> <property name="resourceLoaderPath" value="/WEB-INF/velo/"/> <property name= "velocityProperties"> <props> <prop key="input.encoding">utf-8</prop> <prop key="output.encoding">utf-8</prop> </props> </property> </bean> <bean id="viewResolver" class="org.springframework.web.servlet.view.velocity.VelocityViewResolver"> <property name="cache" value="false"/> <property name="prefix" value=""/> <property name="suffix" value=".vm"/> <property name="contentType"><value>text/html;charset=UTF-8</value></property> <property name="exposeSpringMacroHelpers" value="true"/> <property name="order"><value>0</value></property> </bean> <bean id="JSPviewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="cache" value="false"/> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> <property name="contentType"><value>text/html;charset=UTF-8</value></property> <property name="order"><value>1</value></property> </bean> [/code] 目的是为了,请求多种视图,viewResovler的order如上图使用 [code="java"] @RequestMapping(value ="/welcome/user") public ModelAndView welcome(HttpServletRequest request,HttpServletResponse response, ModelMap modelMap) { return new ModelAndView("welcome",modelMap); //普通转向 } [/code] 第一次http://localhost:8080/Prj/welcome/user 请求/WEB-INF/velo/目录底下的welcome.vm文件可以正常访问 当我把java代码修改成这样 [code="java"] @RequestMapping(value ="/welcome/user") public ModelAndView welcome(HttpServletRequest request,HttpServletResponse response, ModelMap modelMap) { return new ModelAndView("welcome",modelMap); //普通转向 } [/code] 并且把jspresovler的order改成0,把velocity的resovler改成1 目的就是为了在/WEB-INF/jsp/目录下找不到welcome.jsp文件,按理说servlet会继续在另外一个resovler里面来查找.vm文件 应该是去找 /WEB-INF/veclo/目录底下寻找 welcome.vm文件,但是 当我请求上面的请求的时候,tomcat提示404错误,后台打印 说找不到welcome.jsp文件 是什么原因? 各位大虾? 补充:当我把两个order都设为0的时候,也是可以找到的

spring动态加载数据源+动态添加数据源

相信很多开发者也遇到过这样的问题,随着项目的增大,使用的数据源会越来越多,现在比较流行配置数据源的方法是在xml配置文件配置数据源, ![图片说明](https://img-ask.csdn.net/upload/201611/24/1479978484_44310.png) 再继承类AbstractRoutingDataSource ![图片说明](https://img-ask.csdn.net/upload/201611/24/1479978496_990637.png) 这样做是挺麻烦的,每添加一个数据源,都要做重复的工作,而且好多代码都是重复的。 现在小弟的做法是,把xml的配置转到用java代码装配,数据源参数从数据库获取,按xml配置文件的意思,只要给AbstractRoutingDataSource里的targetDataSources(数据源集合)和defaultTargetDataSource(默认数据源)初始化就好。 具体代码如下: ![图片说明](https://img-ask.csdn.net/upload/201611/24/1479978510_435106.png) ![图片说明](https://img-ask.csdn.net/upload/201611/24/1479978527_153617.png) ![图片说明](https://img-ask.csdn.net/upload/201611/24/1479978540_741057.png) 至此完成从xml配置文件到java代码装配,启动没有问题。使用默认数据源的用户登录系统没有问题,但当使用非默认数据源用户登录系统时,会提示找不到用户,难道加载数据源出问题?只成功加载了默认数据源?但是断点跟踪,数据源集合targetDataSources是有值的。使用其他数据源的用户登录时,下面这个方法也是有返回值的: ![图片说明](https://img-ask.csdn.net/upload/201611/24/1479978551_385665.png) 百思不得其解!有做过这方面的大神可以给点建议吗? 还有一个问题,数据源集合是在系统启动时加载的,如果我在数据库添加多一个数据源,那又怎样可以不用重启系统就可以直接访问这个数据源对应的数据库呢? 在此先谢了! 2016-11-29更新解决办法 动态切换数据源解决办法:原来的配置文件里的数据源集合的key用的是DataSourceType,而我手动装配数据源用的是 ![图片说明](https://img-ask.csdn.net/upload/201611/29/1480429699_315678.png) 装配数据源地方的代码修改如下: ![图片说明](https://img-ask.csdn.net/upload/201611/30/1480467096_241144.jpg) 改后可以自由切换数据源。现在剩下动态添加数据源没有实现。 DataSourceType类型是一个枚举类型。 动态加载数据源关键一点:在系统运行时加载多一个数据源,加载此数据源的对象必须和系统启动时加载数据源的同一个,在我这里加载数据源的对象是类DynamicDataSource,可在这里添加一个加载数据源的方法: ![图片说明](https://img-ask.csdn.net/upload/201701/11/1484099363_286931.jpg) 至于如何得到同一个是类DynamicDataSource,可以在系统启动时在某个地方保存一份此对象,就像保存数据源一样,当需要使用数据源时可以获取。

IDEA2019.3中Alibaba Cloud Toolkit直接上传文件而不等编译完成后上传

前几天更新了IDEA2019.3,然后使用Alibaba Cloud Toolkit部署项目,发现并没有在编译后再上传,而是直接上传,然后同时也在编译,请问这是什么问题? 附上配置: <br> ![图片说明](https://img-ask.csdn.net/upload/201912/16/1576490680_63804.png) ![图片说明](https://img-ask.csdn.net/upload/201912/16/1576490658_584374.png) <br> 即使使用uploadfile也是这样

eclipse安装kotlin后不显示

![图片说明](https://img-ask.csdn.net/upload/201711/24/1511491037_168313.png) 安装成功了,但是却找不到kotlin ![图片说明](https://img-ask.csdn.net/upload/201711/24/1511491217_556606.png) 请大家帮帮忙

spring配置DataSource问题

<p> </p> <p>今天配置DataSource想加入字符参数,于是在url属性的value中加入两个参数。</p> <p>&lt;property name="url"&gt;</p> <p>     &lt;value&gt;jdbc:mysql://localhost:3306/park?useUnicode=true&amp;characterEncoding=UTF-8&lt;/value&gt;</p> <p>&lt;/property&gt;</p> <p>但是IDE提示有错,显示需要用分号区分,于是改成</p> <p> </p> <p>今天配置DataSource想加入字符参数,于是在url属性的value中加入两个参数。</p> <p>&lt;property name="url"&gt;</p> <p>     &lt;value&gt;jdbc:mysql://localhost:3306/park?useUnicode=true;characterEncoding=UTF-8&lt;/value&gt;</p> <p>&lt;/property&gt;,但是运行后就抛出异常。</p> <p> </p> <p>Caused by: java.sql.SQLException: The connection property 'useUnicode' only accepts values of the form: 'true', 'false', 'yes' or 'no'. The value 'true;characterEncoding=UTF-8' is not in this set.</p> <p><span style="white-space: pre;"> </span>at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:910)</p> <p>.....</p> <p>就是将后面所有作为了参数值。</p> <p>想请教坛子里是否有遇到过的,网上查了都说是第一种配置,但是页面就检查无法通过呀。求解答!</p>

jsp通过tomacat虚拟路径打开提示500错误

按照这篇博客中说的: 首先可以使用记事本直接打开,也可以把JSP文件直接拖到浏览器页面就能打开,但是这完全是打开的源代码,并不是我写的JSP页面想呈现的东西。 因此只有通过配置tomcat虚拟路径才可以打开。 1、在F盘(也可以在别的硬盘)上建立一个mldnwebdemo文件夹(名字任意取) 2、在mldnwebdemo文件夹下建立一个WEB-INF (不能更改名字)子文件夹,在WEB-INF文件夹建立web.xml文件(不能更改名字)。 3、这个web.xml文件可以复制TOMCAT安装目录下的webapps/ROOT/WEB-INF/web.xml 4、打开Tomcat安装目录下的conf/server.xml文件,添加一下<Context>代码 5、打开Tomcat安装目录下的conf/web.xml文件,修改listings中的false为true 6、启动Tomcat服务器(Tomcat安装目录下的bin/Tomca7.exe)(注意:每次修改Tomcat内的.xml文件后都要重新启动Tomcat,修改的参数才能起作用) 7、打开浏览器,输入网址" http://localhost:8080/mldn/ "运行结果如下,说明配置成功 但是在运行后提示错误 HTTP Status 500 - java.lang.IllegalStateException: No output folder type: Exception report message: java.lang.IllegalStateException: No output folder description :The server encountered an internal error that prevented it from fulfilling this request. exception: org.apache.jasper.JasperException: java.lang.IllegalStateException: No output folder org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:591) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:397) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) root cause: java.lang.IllegalStateException: No output folder org.apache.jasper.JspCompilationContext.createOutputDir(JspCompilationContext.java:677) org.apache.jasper.JspCompilationContext.getOutputDir(JspCompilationContext.java:199) org.apache.jasper.JspCompilationContext.getClassFileName(JspCompilationContext.java:525) org.apache.jasper.compiler.Compiler.isOutDated(Compiler.java:444) org.apache.jasper.compiler.Compiler.isOutDated(Compiler.java:408) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:578) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:363) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) note The full stack trace of the root cause is available in the Apache Tomcat/8.0.27 logs. 再次进入虚拟路径打开jsp文件有提示404错误 HTTP Status 404 - /mldn/test.jsp type: Status report message: /mldn/test.jsp description: The requested resource is not available. 求解决办法 啊

通过设置代理服务器访问WebService 提示【HTTP status 407: authenticationrequired】

大家好,针对如题问题,我查找了网上相关解释,但大多是针对 【**Proxy** authenticationrequired】这个问题的回复,而我遇见的问题【authenticationrequired】貌似与其不大一样,以下我做出我的描述: 1、服务器被加入域中,该域网络不可通过外网访问其网络,访问外网时需要通过代理服务器访问 2、程序开发是用.net编写的,方式与网上查到的大致一样代码如下 using System.Net; Uri proxyURI = new Uri("http://jecjec.com:80");//代理服务器地址 System.Net.WebProxy proxyObject = new System.Net.WebProxy(proxyURI,false); proxyObject.Credentials = new System.Net.NetworkCredential("jecray","pwd","domain"); 3、客户方面有多台服务器,其中之前只有一台可以正常访问,其余均抛出如题的异常,现在唯一一台服务器也无法访问,但相关的网络负责人反馈域用户信息是正确的,应该可以访问 4、测试:用一台自动获取IP的机器在内网中通过设置代理方式访问外网是可以成功的。 请问可否修改网络环境配置,或者程序配置文件可以解决此问题 谢谢

在中国程序员是青春饭吗?

今年,我也32了 ,为了不给大家误导,咨询了猎头、圈内好友,以及年过35岁的几位老程序员……舍了老脸去揭人家伤疤……希望能给大家以帮助,记得帮我点赞哦。 目录: 你以为的人生 一次又一次的伤害 猎头界的真相 如何应对互联网行业的「中年危机」 一、你以为的人生 刚入行时,拿着傲人的工资,想着好好干,以为我们的人生是这样的: 等真到了那一天,你会发现,你的人生很可能是这样的: ...

程序员请照顾好自己,周末病魔差点一套带走我。

程序员在一个周末的时间,得了重病,差点当场去世,还好及时挽救回来了。

Java基础知识面试题(2020最新版)

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总结了 150 余个神奇网站,你不来瞅瞅吗?

原博客再更新,可能就没了,之后将持续更新本篇博客。

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面试:第十六章:Java中级开发

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大三实习生,字节跳动面经分享,已拿Offer

说实话,自己的算法,我一个不会,太难了吧

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《Oracle Java SE编程自学与面试指南》最佳学习路线图2020年最新版(进大厂必备)

正确选择比瞎努力更重要!

字节跳动面试官竟然问了我JDBC?

轻松等回家通知

面试官:你连SSO都不懂,就别来面试了

大厂竟然要考我SSO,卧槽。

实时更新:计算机编程语言排行榜—TIOBE世界编程语言排行榜(2020年6月份最新版)

内容导航: 1、TIOBE排行榜 2、总榜(2020年6月份) 3、本月前三名 3.1、C 3.2、Java 3.3、Python 4、学习路线图 5、参考地址 1、TIOBE排行榜 TIOBE排行榜是根据全世界互联网上有经验的程序员、课程和第三方厂商的数量,并使用搜索引擎(如Google、Bing、Yahoo!)以及Wikipedia、Amazon、YouTube统计出排名数据。

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