mybatis 注入mapper的问题 5C

mybatis动态代理mapper(interface),然后用@Res..注入一直报错,然后无奈用了配置文件,
在service层用get/set方法来做,发现这个MAPPER还是空的!!

@Service("testService")
public class TestServiceImpl implements TestService{

private TestMapper testMapper;


public TestMapper getTestMapper() {
    return testMapper;
}


public void setTestMapper(TestMapper testMapper) {
    this.testMapper = testMapper;
}


@Transactional
@Override
public Object tset1(){  
    TestMapper mapper = ApplicationContextFactory.getBean("testMapper", TestMapper.class);
    mapper.insertOne();
    throw new RuntimeException("test");
}

}

如上,但是ApplicationContextFactory.getBean又可以取到并且操作,扫描包应是没问题的,不然应该会报错吧

12个回答

@Autowired
private TestMapper testMapper;

qq_39015948
qq_39015948 试过的 报错了
大约 2 年之前 回复

你mapper加上
@Component("testmapper")
@Mapper
public interface TestMapper{

用@Resource注入试一试
@Resource(name="testmapper")
private TestMapper testMapper;

qq_39015948
qq_39015948 试了一下还是不行 ,用注解的话,找不到testMapeer这个bean
大约 2 年之前 回复

你的类变量testMapper只是声明了bean,但是并没有注入到这个类里面来。
这段代码看起来并没有错误。不过有可能是因为没有截图完。
@Autowired/@resource两个注解都是可以的。
private TestMapper testMapper;

aquriushu
aquriushu 没有被扫描到的bean里注入bean当然是注入不成功的。另外,注入bean不用再添加get/set
大约 2 年之前 回复
aquriushu
aquriushu 回复qq_39015948: testService都没有被扫描到啊亲
大约 2 年之前 回复
qq_39015948
qq_39015948 用注解的话就会报错,可以看我昨天才发的一个问题,也是这个,NoSeachBean的那个错误,这个bean只用通过appliciton.getBean可以取到,我也不知道为什么
大约 2 年之前 回复

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testService': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.zcloudMVC.mapper.TestMapper] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(shareable=true, mappedName=, description=, name=, type=class java.lang.Object, authenticationType=CONTAINER, lookup=)}
这是用注解报的错





这是配置文件,mapper注入到service的


@Service("testService")

public class TestServiceImpl implements TestService{

private TestMapper testMapper;


public TestMapper getTestMapper() {
    return testMapper;
}


public void setTestMapper(TestMapper testMapper) {
    this.testMapper = testMapper;
}


@Transactional(propagation=Propagation.REQUIRED,rollbackFor=Exception.class)
@Override
public Object tset1(){  
    TestMapper mapper = ApplicationContextFactory.getBean("testMapper", TestMapper.class);
    mapper.insertOne();
    throw new RuntimeException("test");
}

}

用配置文件方式的service

mapper 相当于hibernate的dao 组件了,需要被spring扫描到,检查一下spring的配置文件:

....



qq_39015948
qq_39015948 我在spring里面配置了扫描service和mapper的,但是mybatis代理了mapper不是自动注入进容器了嘛,关键是getBean是可以取到的,注解却不行
大约 2 年之前 回复
<bean name="testService" class="com.zcloudMVC.service.impl.TestServiceImpl">
    <property name="testMapper">
        <ref bean="testMapper" />
    </property>
</bean>

这是配置文件mapper到 service的

哎呦, 手敲的代码竟然都不见了


<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.xxx.xxx.*.dao" />
</bean>
qq_39015948
qq_39015948 你看看楼下,是我的,这个是没问题的
大约 2 年之前 回复
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.zcloudMVC.mapper;com.emacle.docm.mapper" />
</bean>
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parameterType="com.spring.dao.Student"> update student set student_name=#{student_name} where studentid=#{studentid} </update> </mapper>

ssm项目springmvc中加入websocke后mybatis不能注入mapper

spring——mybatis文件 ``` <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driverClassName}" /> <property name="jdbcUrl" value="${jdbc.url}" /> <property name="user" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <property name="autoCommitOnClose" value="true"/> <!-- property name="checkoutTimeout" value="${cpool.checkoutTimeout}"/ --> <property name="initialPoolSize" value="${cpool.initialPoolSize}"/> <property name="minPoolSize" value="${cpool.minPoolSize}"/> <property name="maxPoolSize" value="${cpool.maxPoolSize}"/> <property name="maxIdleTime" value="${cpool.maxIdleTime}"/> <property name="acquireIncrement" value="${cpool.acquireIncrement}"/> <property name="idleConnectionTestPeriod" value="${cpool.idleConnectionTestPeriod}"/> <property name="acquireRetryAttempts" value="${cpool.acquireRetryAttempts}"/> <property name="maxStatements" value="${c3p0.maxStatements}"/> <property name="maxStatementsPerConnection" value="${c3p0.maxStatementsPerConnection}"/> </bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- mapper和resultmap配置路径 --> <property name="mapperLocations"> <list> <value>classpath:com/yuan/*/entity/*.mapper.xml</value> </list> </property> </bean> <!-- 设置扫描根路径也就是你的mybatis的mapper接口所在包路径; 凡是markerInterface这个接口的子接口都参与到这个扫描, 也就是说所有的mapper接口继承这个SqlMapper。--> <bean name="SqlMapper" class="com.yuan.framework.mapper.SqlMapper"> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.yuan.*.mapper"/> <property name="markerInterface" ref="SqlMapper" /> </bean> <!-- TransactionManager 事务管理 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!--启动spring事务注解功能--> <tx:annotation-driven transaction-manager="transactionManager" /> ``` springmvc文件 ``` <mvc:annotation-driven/> <!-- <mvc:resources location="/" mapping="/**"/> --> <!-- 自动扫描controller包下的所有类,使其认为spring mvc的控制器 --> <context:component-scan base-package="com.yuan.*.controller" /> <bean id="myHandler" class="com.yuan.framework.websocket.WebsocketEndPoint"></bean> <websocket:handlers> <websocket:mapping path="/myHandler" handler="myHandler"/> <websocket:handshake-interceptors> <bean class="com.yuan.framework.websocket.HandshakeInterceptor"/> </websocket:handshake-interceptors> </websocket:handlers> <!-- <websocket:handlers > <websocket:mapping path="/sockjs/myHandler" handler="myHandler"/> <websocket:sockjs/> </websocket:handlers> --> <!-- 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.MappingJackson2HttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> </list> </property> </bean> <!-- 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> <ref bean="mappingJacksonHttpMessageConverter" /><!-- json转换器 --> </list> </property> <!-- 日期格式转换 --> <property name="webBindingInitializer"> <bean class="com.yuan.framework.util.DateConverter"/> </property> </bean> <!-- 对模型视图名称的解析,即在模型视图名称添加前后缀 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/" p:suffix=".jsp" /> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding"> <value>UTF-8</value> </property> <property name="maxUploadSize"> <value>32505856</value><!-- 上传文件大小限制为31M,31*1024*1024 --> </property> <property name="maxInMemorySize"> <value>4096</value> </property> </bean> ```

spring整合mybatis 注入出错 求助各位大神

![目录结构](https://img-ask.csdn.net/upload/201704/13/1492074562_72832.png) 报错 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cn.jscoin.UserTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private cn.jscoin.jslj.mapper.UserMapper cn.jscoin.UserTest.userMapper; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [cn.jscoin.jslj.mapper.UserMapper] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1202) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:385) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:118) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:212) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:200) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:252) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:254) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:217) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:83) 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$2.evaluate(ParentRunner.java:268) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:68) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:163) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private cn.jscoin.jslj.mapper.UserMapper cn.jscoin.UserTest.userMapper; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [cn.jscoin.jslj.mapper.UserMapper] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:558) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ... 26 more Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [cn.jscoin.jslj.mapper.UserMapper] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1308) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1054) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:949) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:530) ... 28 more 测试代码 ``` @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations="classpath*:applicationContext.xml") public class UserTest { @Autowired private UserMapper userMapper; @Test public void testAdd(){ User user = new User(); user.setAge(123); userMapper.add(user); } } ``` ![配置文件位置](https://img-ask.csdn.net/upload/201704/13/1492074774_341390.png) applicationContext.xml <!-- 扫描包 --> <context:component-scan base-package="cn.jscoin" /> <!-- 数据源 druid --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="driverClassName" value="${driverClassName}" /> <property name="url" value="${url}" /> <property name="username" value="${username}" /> <property name="password" value="${password}" /> </bean> <!-- 读取Property --> <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <set> <value>classpath:jdbc.properties</value> </set> </property> </bean> <!-- Mybatis工厂 --> <bean class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 数据源 --> <property name="dataSource" ref="dataSource" /> <!-- 配置Mybati的核心配置文件 --> <property name="configLocation" value="classpath:mybatis-config.xml" /> </bean> <!-- 扫描基本包 Mapper 接口 Mapper文件 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="cn.jscoin.jslj.mapper" /> </bean> <!-- 事务 @Transactional --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 开启注解的事务 --> <tx:annotation-driven transaction-manager="transactionManager" />

基于java注解配置 mybatis的时候,mapper无法注入spring容器,怎么解决?

配置代码如下: ``` @Bean(name = "sqlSessionFactory") public SqlSessionFactory sqlSessionFactory() throws Exception { logger.info("SqlSession配置...."); SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean(); factoryBean.setDataSource(basicDataSource()); factoryBean.setMapperLocations(context.getResources("classpath*:config/mappers/*.xml")); // factoryBean.setTypeAliasesPackage("com.hengqinlife.EcPlatform.dao.modules.**.entity"); // Interceptor[] plugins = new Interceptor[10]; // PageHelper page = new PageHelper(); // Properties properties = new Properties(); // properties.setProperty("dialect", "mysql"); // page.setProperties(properties); // plugins[0] = page; // factoryBean.setPlugins(plugins); return factoryBean.getObject(); } @Bean public static MapperScannerConfigurer getMapperScannerConfigurer(){ MapperScannerConfigurer config = new MapperScannerConfigurer(); config.setBasePackage("com.hengqinlife.EcPlatform.dao.modules.**.mapper"); config.setSqlSessionFactoryBeanName("sqlSessionFactory"); return config; } ``` ![图片说明](https://img-ask.csdn.net/upload/201703/01/1488334217_181219.png)

Mybatis 整合spring使用自动扫描包的方式来注册各种Mapper 出现问题,求教

如果采用 <!-- 注册Mapper方式二:也可不指定特定mapper,而使用自动扫描包的方式来注册各种Mapper ,配置如下:--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="org.hyn.maper" /> </bean> 其中有org.hyn.maper.UserMapper 那么<bean id="userService" class="org.hyn.service.UserServiceImpl"> <property name="userMapper" ref="userMapper" /> </bean> 这个<property name="userMapper" ref="userMapper" />如何能够找到 ,小白求教

Spring整合Mybatis关于Dao注入失败的问题求解

抛出异常 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'adminService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private pers.zww.grad.dao.IAdminDao pers.zww.grad.service.impl.AdminServiceImpl.adminDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [pers.zww.grad.dao.IAdminDao] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true), @org.springframework.beans.factory.annotation.Qualifier(value=adminDao)} 此为自动生成的Mapper,我加了注解@Repository package pers.zww.grad.dao; import org.springframework.stereotype.Repository; import pers.zww.grad.vo.Admin; @Repository("adminDao") public interface IAdminDao { int deleteByPrimaryKey(String id); int insert(Admin record); int insertSelective(Admin record); Admin selectByPrimaryKey(String id); int updateByPrimaryKeySelective(Admin record); int updateByPrimaryKey(Admin record); Integer getCountByName(String name); Integer getCountByNameAndPass(String name,String password); } 这是Service里面注入 package pers.zww.grad.service.impl; 、、、 @Service("adminService") public class AdminServiceImpl implements IAdminService { @Autowired @Qualifier("adminDao") private IAdminDao adminDao; @Override public int deleteByPrimaryKey(String id) { // TODO Auto-generated method stub return 0; } 配置文件都已扫描过了,而且相关mybatis的如下: <!-- 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:pers/zww/grad/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="pers.zww.grad.dao" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean>

mybatis已经添加了@Mapper注解,为什么测试的时候报空指针?

这个类在com.lb.springcloud.dao层下,并且添加了@Mapper ![图片说明](https://img-ask.csdn.net/upload/201909/12/1568283016_874724.png) 这是对应的xml文件 ![图片说明](https://img-ask.csdn.net/upload/201909/12/1568283096_290663.png) 测试代码如下 ![图片说明](https://img-ask.csdn.net/upload/201909/12/1568283137_724691.png) 报错 ![图片说明](https://img-ask.csdn.net/upload/201909/12/1568283155_676625.png) 真的是莫名其妙啊,求各路大神看看

Sping Boot注入接口失败

![图片说明](https://img-ask.csdn.net/upload/201804/21/1524291637_361310.png) 项目结构应该是正确的。 ``` @Repository public interface UserDao { public User getById(int id); } ``` Dao层的代码,使用接口。 @Service ``` @Service public class UserService { @Autowired UserDao userDao; public User getById(int id) { return userDao.getById(id); } } ``` service层代码。 controller层注入service。 启动spring boot后会提示dao层没有扫描到,如果@ComponentScan dao层的话,会提示service层注入失败,求解。

IDEA做SSM框架整合时,出现无法加载mapper,导致无法注入。

今日学习SSM框架整合,整合以后,单独用测试类可以连接成功连接数据库,可是一加入MVC用TOMCAT启动,项目就会报错,错误内容为:Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} 以下为项目各部分截图,有没有大佬帮我分析下,问题到底出在哪? ========================================================================================================================================== ![项目报错详细情况](https://img-ask.csdn.net/upload/201908/15/1565880941_652575.png) ## 项目报错详细情况 ![spring配置文件已经配置了mapper.xml路径和齐对应的接口扫描包](https://img-ask.csdn.net/upload/201908/15/1565880955_958792.png) ## spring配置文件已经配置了mapper.xml路径和齐对应的接口扫描包 ![编译文件夹target里已经编译出了mapper相关配置文件及接口类](https://img-ask.csdn.net/upload/201908/15/1565881099_526884.png) ## 编译文件夹target里已经编译出了mapper相关配置文件及接口类 ![mapper.xml里的namespace已经指明了接口路径](https://img-ask.csdn.net/upload/201908/15/1565881139_161198.png) ## mapper.xml里的namespace已经指明了接口路径 ![pom文件里也配置了resource源](https://img-ask.csdn.net/upload/201908/15/1565881159_416309.png) ## pom文件里也配置了resource源 ========================================================================================================================================== # 详细代码已经贴在下方,只选了几个配置文件及mapper接口类,service及controller应该没关系就没传! ============================================= # 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> <!--添加缓存 引入第三方二级缓存 --> <settings> <setting name="mapUnderscoreToCamelCase" value="true"/> <setting name="cacheEnabled" value="false"/> </settings> <!-- 配置数据源 default默认使用的数据源 --> <environments default="mysql"> <environment id="mysql"> <transactionManager type="JDBC" /> <dataSource type="POOLED"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql:///orderuser"/> <property name="username" value="zhijia3278"/> <property name="password" value="0528"/> </dataSource> </environment> </environments> <!-- 映射文件 --> <mappers> <mapper resource="OrderUserMapper.xml"/> </mappers> </configuration> ``` # OrderUserMapper.java ``` package cn.tedu.mapper; import cn.tedu.domain.Order; import cn.tedu.domain.User; public interface OrderUserMapper { public User queryUser(String userId); public Order queryOrder(String orderId); public void updateUserPoints(User user); } ``` # OrderUserMapper.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="cn.tedu.mapper.OrderUserMapper"> <select id="queryUser" parameterType="String" resultType="User"> select * from t_user where user_id=#{userId} </select> <select id="queryOrder" parameterType="String" resultType="Order"> select * from t_order where order_id=#{orderId} </select> <update id="updateUserPoints" parameterType="User"> update t_user set points=#{points} where user_id=#{userId} </update> </mapper> ``` # spring.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:aop="http://www.springframework.org/schema/aop" xmlns:p="http://www.springframework.org/schema/p" xmlns:util="http://www.springframework.org/schema/util" 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.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!-- 配置内容 --> <context:component-scan base-package="cn.tedu"> </context:component-scan> <context:annotation-config></context:annotation-config> <!-- 持久层数据源 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <!-- 4个属性 --> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql:///orderuser"/> <property name="username" value="zhijia3278"/> <property name="password" value="0528"/> </bean> <!-- sqlSession --> <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 数据源注入 --> <property name="dataSource" ref="dataSource"/> <!-- 扫描mybatis的独立配置文件 关闭二级缓存,驼峰命名 --> <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"/> <!-- 映射文件扫描 --> <property name="mapperLocations" value="classpath:mapper/OrderUserMapper.xml" /> <!-- 别名包 --> <property name="typeAliasesPackage" value="cn.tedu.domain"></property> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 扫描的接口包 cn.tedu.mapper --> <property name="basePackage" value="cn.tedu.mapper"/> </bean> <!-- 注解驱动开启,@RequestMapping @RequestParam等 --> <mvc:annotation-driven/> <!-- 防止静态文件js css html访问被dispacherServlet拦截 --> <!-- localhost静态文件根目录 /static /js /css --> <!-- mapping 满足什么样子的访问地址 http://localhost:8080/js//1.js --> <mvc:resources location="/" mapping="/**"></mvc:resources> </beans> ``` # springmvc-servlet ``` <?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:aop="http://www.springframework.org/schema/aop" xmlns:p="http://www.springframework.org/schema/p" xmlns:util="http://www.springframework.org/schema/util" 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.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!-- 配置内容 --> <context:component-scan base-package="cn.tedu"/> <!-- 注解驱动开启,@RequestMapping @RequestParam等 --> <mvc:annotation-driven/> <!-- 防止静态文件js css html访问被dispacherServlet拦截 --> <!-- localhost静态文件根目录 /static /js /css --> <!-- mapping 满足什么样子的访问地址 http://localhost:8080/js//1.js --> <mvc:resources location="/" mapping="/**"></mvc:resources> </beans> ``` # 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