spring笔记4-事务管理

一.xml配置文件形式
通过转账案例,学习事务管理
1.建立数据库
2.编写entity

package huguangqin.com.cnblogs.entity;

public class User {
     private Integer id;
     private String name;
     private Double money;

    public User() {
         super();
     }

    public User(Integer id, String name, Double money) {
         super();
         this.id = id;
         this.name = name;
         this.money = money;
     }

    public Integer getId() {
         return id;
     }

    public void setId(Integer id) {
         this.id = id;
     }

    public String getName() {
         return name;
     }

    public void setName(String name) {
         this.name = name;
     }

    public Double getMoney() {
         return money;
     }

    public void setMoney(Double money) {
         this.money = money;
     }

}

3.编写dao

package huguangqin.com.cnblogs.dao;

public interface UserDao {
     void increasement(int id, double money);

    void decreasement(int id, double money);
 }

4.编写daoImpl

package huguangqin.com.cnblogs.daoImpl;

import org.springframework.jdbc.core.support.JdbcDaoSupport;

import huguangqin.com.cnblogs.dao.UserDao;

public class UserDaoImpl extends JdbcDaoSupport implements UserDao {

    @Override
     public void increasement(int id, double money) {
         String sql = "update t_bank set money=money+? where id = ?";
         getJdbcTemplate().update(sql, money, id);
     }

    @Override
     public void decreasement(int id, double money) {
         String sql = "update t_bank set money=money-? where id = ?";
         getJdbcTemplate().update(sql, money, id);
     }

}

5.编写service

package huguangqin.com.cnblogs.service;

public interface IUserService {
     void tranfer(int where, int to, double money);
 }

6.编写serviceImpl

package huguangqin.com.cnblogs.serviceImpl;

import org.springframework.beans.factory.annotation.Autowired;

import huguangqin.com.cnblogs.dao.UserDao;
 import huguangqin.com.cnblogs.service.IUserService;

public class UserServiceImpl implements IUserService {
     //调用UserDao操作数据库,spring下调用接口,并注入实例对象
    @Autowired
     private UserDao ud;

    public void setUd(UserDao ud) {
         this.ud = ud;
     }

    @Override
     public void tranfer(int where, int to, double money) {
        ud.decreasement(where, money);
         ud.increasement(to, money);
     }
 }

7.编写db.properties

jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///spring_day02
jdbc.user=root
jdbc.password=root

8.编写applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns="http://www.springframework.org/schema/beans"
 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-4.2.xsd
                     http://www.springframework.org/schema/context
                     http://www.springframework.org/schema/context/spring-context-4.2.xsd
                     http://www.springframework.org/schema/aop
                     http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
                     http://www.springframework.org/schema/tx
                     http://www.springframework.org/schema/tx/spring-tx-4.2.xsd ">

 <!--读取db.propertiey  -->
 <context:property-placeholder location="classpath:db.properties"/>

<!-- 配置连接池到spring容器 -->
 <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
     <property name="driverClass" value="${jdbc.driverClass}"></property>
     <property name="jdbcUrl" value="${jdbc.url}"></property>
     <property name="user" value="${jdbc.user}"></property>
     <property name="password" value="${jdbc.password}"></property>
 </bean>

<!-- 配置核心事务管理器 -->
 <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
     <property name="dataSource" ref="dataSource"></property>
 </bean>

<!-- 配置事务管理通知 -->
 <tx:advice id="txAdvice" transaction-manager="transactionManager">
     <tx:attributes>
         <tx:method name="*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>
         <tx:method name="save*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>
         <tx:method name="find*" isolation="DEFAULT" propagation="REQUIRED" read-only="true"/>
     </tx:attributes>
 </tx:advice>

<!-- 配置织入 -->
 <aop:config>
     <aop:pointcut expression="execution(* huguangqin.com.cnblogs.serviceImpl.*ServiceImpl.*(..))" id="txPc"/>
 </aop:config>

<!-- 配置dao -->
 <bean name="userDao" class="huguangqin.com.cnblogs.daoImpl.UserDaoImpl">
     <property name="dataSource" ref="dataSource"></property>
 </bean>

<!-- 配置service -->
 <bean name="userService" class="huguangqin.com.cnblogs.serviceImpl.UserServiceImpl">
     <property name="ud" ref="userDao"></property>
 </bean>
 </beans>

二.Annotation形式
与xml相比需修改以下文件
1.applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns="http://www.springframework.org/schema/beans"
 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-4.2.xsd
                    http://www.springframework.org/schema/context
                     http://www.springframework.org/schema/context/spring-context-4.2.xsd
                     http://www.springframework.org/schema/aop
                     http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
                     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd ">

 <!--读取db.propertiey  -->
 <context:property-placeholder location="classpath:db.properties"/>

<!-- 配置连接池到spring容器 -->
 <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
     <property name="driverClass" value="${jdbc.driverClass}"></property>
     <property name="jdbcUrl" value="${jdbc.url}"></property>
     <property name="user" value="${jdbc.user}"></property>
     <property name="password" value="${jdbc.password}"></property>
</bean>

<!-- 配置核心事务管理器 -->
 <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
     <property name="dataSource" ref="dataSource"></property>
 </bean>

<!--开启注解管理事务开关  -->
 <tx:annotation-driven transaction-manager="transactionManager"/>

<!-- 配置dao -->
 <bean name="userDao" class="huguangqin.com.cnblogs.daoImpl.UserDaoImpl">
     <property name="dataSource" ref="dataSource"></property>
 </bean>

<!-- 配置service -->
 <bean name="userService" class="huguangqin.com.cnblogs.serviceImpl.UserServiceImpl">
     <property name="ud" ref="userDao"></property>
 </bean>
 </beans>

2.serviceImpl类

package huguangqin.com.cnblogs.serviceImpl;

import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.transaction.annotation.Transactional;

import huguangqin.com.cnblogs.dao.UserDao;
 import huguangqin.com.cnblogs.service.IUserService;

@Transactional
 public class UserServiceImpl implements IUserService {
     @Autowired
     private UserDao ud;

    public UserDao getUd() {
         return ud;
     }

    public void setUd(UserDao ud) {
         this.ud = ud;
     }

    @Override
     // @Transactional(isolation = Isolation.DEFAULT, propagation =Propagation.REQUIRED, readOnly = false)
     public void tranfer(int where, int to, double money) {
         ud.decreasement(where, money);
         ud.increasement(to, money);
     }

}