程序中事务控制

/**
 * dao实现，使用spring对jdbc支持
 * @author 郭庆兴
 *
 */
public class DeptDao {
	//在日期中注入JdbcTemplate对象
	private JdbcTemplate jdbcTemplate;
	public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
		this.jdbcTemplate = jdbcTemplate;
	}
	public void save(Dept dept){
		String sql="insert into t_Dept(deptName) values(?)";
		jdbcTemplate.update(sql,dept.getDeptName());
	}
}

public class DeptService {
	//接受容器注入的dao
	private DeptDao deptDao;
	public void setDeptDao(DeptDao deptDao) {
		this.deptDao = deptDao;
	}
	
	public void save(Dept dept){
		//第一次调用
		deptDao.save(dept);
		
		// 模拟异常,此时整个service.save()执行成功的时候要回滚
		int i=1/0;
		
		//第二次调用
		deptDao.save(dept);
	}
}

<?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: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/aop
         http://www.springframework.org/schema/aop/spring-aop.xsd
         http://www.springframework.org/schema/tx
     	 http://www.springframework.org/schema/tx/spring-tx.xsd">

	<!-- <bean id="userDao" class="com.gqx.h_jdbc.UserDao_a"></bean> -->
	
	<!-- 1、数据源对象:C3P0连接池 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="driverClass" value="com.microsoft.sqlserver.jdbc.SQLServerDriver"></property>
		<property name="jdbcUrl" value="jdbc:sqlserver://localhost:1433;DataBaseName=Test"></property>
		<property name="user" value="sa"></property>
		<property name="password" value="123456"></property>
		<property name="initialPoolSize" value="3"></property>
		<property name="maxPoolSize" value="11"></property>
		<property name="maxStatements" value="50"></property>
		<property name="acquireIncrement" value="2"></property>
	</bean>
	
	<!-- 2、创建JdbcTemplate对象 -->
	<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
		<constructor-arg ref="dataSource"></constructor-arg>
		<!-- 或者<property name="dataSource" ref="dataSource"></property> -->
	</bean>
	
	
	<!-- 3、dao实例 -->
	<bean id="deptDao" class="cn.gqx.a_tx.DeptDao">
		<property name="jdbcTemplate" ref="jdbcTemplate"></property>
	</bean>
	
	<!-- 4、service实例 -->
	<bean id="deptService" class="cn.gqx.a_tx.DeptService">
		<property name="deptDao" ref="deptDao"></property>
	</bean>
	
	<!-- ##########5、#Spring声明式事务管理配置############# -->
	<!-- 5、1 配置事物管理类 -->
	<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource"></property>
	</bean>
	<!-- 5、2 配置事物增强类-->
	<tx:advice transaction-manager="txManager" id="txAdvice">
		<tx:attributes>
			<tx:method name="save" read-only="false"/>
		</tx:attributes>
	</tx:advice>
	<!-- 5、3 Aop配置 ：拦截哪些方法+应用上面的事物增强配置-->
	<aop:config>
		<aop:pointcut expression="execution(* cn.gqx.a_tx.DeptService.*(..))" id="pc"/>
		<aop:advisor advice-ref="txAdvice" pointcut-ref="pc"/>
	</aop:config>
</beans>

@Test
	public void test() {
		//创建容器对象
		ApplicationContext ac=new ClassPathXmlApplicationContext("cn/gqx/a_tx/bean.xml");
		
		Dept dept=new Dept();
		dept.setDeptName("销售部");
		
		DeptService deptService=(DeptService)ac.getBean("deptService");
		deptService.save(dept);
	}