Spring使用注解事务管理

1. 本次采用的是使用注解这种方式，我感觉使用这种方式是最简单的。本次代码参考自慕课网
2. 本事例是模仿银行转钱，中间发生异常，使用事务进行管理
3. 定义接口

public interface AccountService {   public void transfer(String out,String in ,int money);}

4.定义接口实现类

import org.springframework.transaction.annotation.Transactional;//使用注解@ransactional  public class AccontServiceImpl  implements AccountService {   private AccountDao accountDao;    public void setAccountDao(AccountDao accountDao) {    this.accountDao = accountDao;}    public void transfer(String out, String in, int money) {        // TODO Auto-generated method stub                  accountDao.outMoney(out, money);                   int i=1/0;  //发生异常                   accountDao.inMoney(in, money);    }}

5.定义Dao接口

public interface AccountDao {   public void outMoney(String out,int money);   public void inMoney(String in,int money);}

6.定义Dao接口实现类

import org.springframework.jdbc.core.support.JdbcDaoSupport;public class AccountDaoImpl extends JdbcDaoSupport implements AccountDao {    @Override    public void outMoney(String out, int money) {        // TODO Auto-generated method stub    String sql="update account set money=money-? where name=?";    this.getJdbcTemplate().update(sql,money,out);    }    @Override    public void inMoney(String in, int money) {        // TODO Auto-generated method stub         String sql="update account set money=money+? where name=?";            this.getJdbcTemplate().update(sql,money,in);    }}

7.测试类

import javax.annotation.Resource;import org.junit.runner.RunWith;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration("classpath:applicationContext2.xml")public class Test {    @Resource(name="accountService")    private AccountService accountservice;    @org.junit.Test    public void test() {        accountservice.transfer("aaa", "bbb", 100);    }}

8.配制文件

<?xml version="1.0" encoding="UTF-8"?>  <beans xmlns="http://www.springframework.org/schema/beans"      xmlns:context="http://www.springframework.org/schema/context"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      xmlns:aop="http://www.springframework.org/schema/aop"       xmlns:tx="http://www.springframework.org/schema/tx"        xsi:schemaLocation="      http://www.springframework.org/schema/context      http://www.springframework.org/schema/context/spring-context.xsd      http://www.springframework.org/schema/beans      http://www.springframework.org/schema/beans/spring-beans.xsd      http://www.springframework.org/schema/tx      http://www.springframework.org/schema/tx/spring-tx.xsd      http://www.springframework.org/schema/aop      http://www.springframework.org/schema/aop/spring-aop.xsd">      <context:property-placeholder location="classpath:jdbc.properties"/>    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">          <property name="driverClass" value="${jdbc.driverClassName}"></property>          <property name="jdbcUrl" value="${jdbc.url}"></property>          <property name="user" value="${jdbc.username}"></property>          <property name="password" value="${jdbc.password}"></property>    </bean>    <!-- 配置业务 -->    <bean id="accountService" class="com.transaction2.AccontServiceImpl">        <property name="accountDao" ref="accountDao"></property>    </bean>    <!-- 配置dao -->    <bean id="accountDao" class="com.transaction2.AccountDaoImpl">        <property name="dataSource" ref="dataSource"> </property>    </bean>   <!-- 配置事务管理类 -->     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">         <property name="dataSource" ref="dataSource"></property>    </bean>    <!--配制注解 -->    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>  </beans>

9.项目结构