spring—编程式事物管理

1.benas.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<beansxmlns="http://www.springframework.org/schema/beans"

   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

   xmlns:aop="http://www.springframework.org/schema/aop"

   xmlns:context="http://www.springframework.org/schema/context"

   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/context

        http://www.springframework.org/schema/context/spring-context.xsd">

     

       <!-- 数据库连接池的配置 -->

     <beanid="dataSource"class="org.apache.commons.dbcp.BasicDataSource"destroy-method="close">

       <propertyname="driverClassName"value="${jdbc.driverClassName}"/>

       <propertyname="url"value="${jdbc.url}"/>

       <propertyname="username"value="${jdbc.username}"/>

       <propertyname="password"value="${jdbc.password}"/>

     </bean>

        <!-- jdbc事务管理器 -->

     <beanid="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

       <propertyname="dataSource"ref="dataSource"></property>

     </bean>

        

     <beanid="transactionTemplate"class="org.springframework.transaction.support.TransactionTemplate">

        <propertyname="transactionManager"ref="transactionManager"></property>

     </bean>

     <context:property-placeholderlocation="jdbc.properties"/>

     <!-- jdbcTemplate的配置 -->

     <beanid="namedParameterJdbcTemplate"class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate">

          <constructor-argref="dataSource"></constructor-arg>

     </bean>

     <!-- 上面的全可以直接调用不用修改，如果要改数据库配置就改jdbc.properties -->

     <beanid="bankDao"class="com.lidongyang.dao.impl.BankDaoImpl">

          <propertyname="namedParameterJdbcTemplate"ref="namedParameterJdbcTemplate"></property>

     </bean>

     <beanid="bankService"class="com.lidongyang.service.impl.BankServiceImpl">

          <propertyname="bankDao"ref="bankDao"></property>

          <propertyname="transactionTemplate"ref="transactionTemplate"></property>

     </bean>

</beans>

2.package com.lidongyang.service.impl;

import org.springframework.transaction.TransactionStatus;

import org.springframework.transaction.support.TransactionCallbackWithoutResult;

import org.springframework.transaction.support.TransactionTemplate;

import com.lidongyang.dao.Bank;

import com.lidongyang.service.BankService;

public class BankServiceImpl implements BankService{

    private Bank bankDao;

    private TransactionTemplate transactionTemplate;

    public void setTransactionTemplate(TransactionTemplate transactionTemplate) {

        this.transactionTemplate = transactionTemplate;

    }

    public void setBankDao(Bank bankDao) {

        this.bankDao = bankDao;

    }

    @Override

    public void TransactionMoney( final int money, final int userIdA, final int userIdB) {

        // TODO Auto-generated method stub

        transactionTemplate.execute(new TransactionCallbackWithoutResult() {

            @Override

            protected void doInTransactionWithoutResult(TransactionStatus arg0) {

                // TODO Auto-generated method stub

                bankDao.outMoney(userIdA,money );

                bankDao.inMoney(userIdB,money );               

            }

        });

    }

}