Spring+mabatis für die SSM-Integration in der Java-Entwicklung

<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 ">
	
	<!-- 加载配置文件 -->
	<context:property-placeholder location="classpath:db.properties" />
	
	<!-- 数据源，使用dbcp -->        
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"   destroy-method="close">
		<property name="driverClassName" value="${jdbc.driver}"/>
		<property name="url" value="${jdbc.url}"/><!-- jdbc:mysql://localhost:3306/test?characterEncoding=utf8 -->
		<property name="username" value="${jdbc.username}"/>
		<property name="password" value="${jdbc.password}"/>
		<property name="maxActive" value="10"/>
		<property name="maxIdle" value="5"/>
	</bean>

	<!-- sqlSessionFactory -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 加载mybatis的配置文件 -->

		<property name="configLocation" value="mybatis/SqlMapConfig.xml"/>
		<!-- 数据源 -->
		<property name="dataSource" ref="dataSource"></property>
		
	</bean>
	<!-- 原始dao接口 -->
 	<bean id="userDao" class="cn.itcast.ssm.dao.UserDaoImpl">
		<property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
	</bean> 

</beans>

 <!-- 加载映射文件 -->
 <mappers>
 <mapper resource="sqlmap/User.xml"/>

public interface UserDao {

	//根据id查询用户信息
	public User findUserById(int id)throws Exception;	

	public class UserDaoImpl extends SqlSessionDaoSupport implements UserDao{

        @Override
	public User findUserById(int id) throws Exception {
		//继承SqlSessionDaoSupport ,通过this.getSqlSession()得到sqlSession
		SqlSession sqlSession = this.getSqlSession();
		User user = sqlSession.selectOne("test.findUserById", id);
		//释放资源
		//sqlSession.close();
		return user;
	}
        }

	<!-- 原始dao接口 -->
 	<bean id="userDao" class="cn.itcast.ssm.dao.UserDaoImpl">
		<property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
	</bean>

public class UserDaoImplTest {
	
	private ApplicationContext applicationContext;
	//在setUp这个方法中得到spring容器
	@Before
	public void setUp()throws Exception{
		applicationContext=new ClassPathXmlApplicationContext("classpath:spring/applicationContext.xml");
		
	}
	
	@Test
	public void testFindUserById() throws Exception {
		UserDao userDao=(UserDao) applicationContext.getBean("userDao");
//		//调用userDao的方法
		User user=userDao.findUserById(1);
		System.out.println(user);
	}