- 创建entity(实体类)
- 创建dao
对数据库进行操作 - 在main/resources中创建一个包 里面放Mapper
<?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.yangyang.dao.UserDAO">
<!-- parameterType 参数 -->
<!-- resultType 返回值 -->
<select id="QuestALL" resultType="User">
select * from user
</select>
</mapper>
- 配置spring
<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-4.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.1.xsd ">
<!-- 开启注解扫描 --><!-- service 位置 -->
<context:component-scan base-package="com.yangyang" />
<!-- 引入小配置文件 -->
<context:property-placeholder location="classpath:jdbc.properties" />
<!-- 创建数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${jdbc.drivcer}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.name}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!-- 创建sqlsessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean" >
<property name="dataSource" ref="dataSource" />
<property name="typeAliasesPackage" value="com.yangyang.entity" />
<property name="mapperLocations" value="classpath:com/yangyang/mapper/*Mapper.xml" />
</bean>
<!-- 创建DAO对象 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" >
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
<property name="basePackage" value="com.yangyang.dao" />
</bean>
<!-- 创建事务管理 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager" >
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 开启注解式事务生效 -->
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>
- service(业务层)
/*注解注入service(业务层)*/
/*@transactional 添加事务*/
@Service("userService")
@Transactional
public class UserServiceIMP implements UserService {
/*自动注入*/
@Autowired
private UserDAO userDAO;
/*实现方法*/
public List<User> questALL() {
System.out.println("aaaa");
List<User> users = userDAO.QuestALL();
return users;
}
}
- 测试 Test
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:spring.xml")
public class TsstUser {
@Autowired
private UserService userService;
@Test
public void Test1(){
List<User> users = userService.questALL();
System.out.println(users);
}
}
这是spring和mybatis的整合
通常我在做这两个整合的时候经常会出一些或大或小的问题,之后会贴在下面。