spring事务学习（转账案例）(二)

四、通过springAop进行事务管理

继续从第一个无事务操作的项目中进行更改。

只修改applicationContext.xml配置文件，注意设置transaction引用

<?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: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">
    <!--配置数据源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
        <property name="jdbcUrl" value="jdbc:mysql:///spring_transaction"></property>
        <property name="user" value="root"></property>
        <property name="password" value="hjp123"></property>
    </bean>
    <!--配置Dao-->
    <bean id="accountDao" class="com.hujp.dao.impl.AccountDaoImpl">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--配置Service-->
    <bean id="accountService" class="com.hujp.service.impl.AccountServiceImpl">
        <property name="accountDao" ref="accountDao"></property>
    </bean>
    <!--事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--事务管理器要从数据源中获得数据库连接进行操作-->
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--配置事务详情
        <tx:advice>配置事务详情
            id：通知名称
            transaction-manager:事务详情最后要应用到平台（管理器）
            <tx:method>配置具体的详情
                name详情名称，类似<prop key="">
                    如果是transfer表示指定方法
                    add* 是以add开头的方法
                    *    任何方法
                propagation传播行为
                isolation隔离级别
                read-only是否只读
                rollback-for类似-Exception回滚
                no-rollback-for类似+Exception提交
        例如工作中类似配置：增删改查及所有
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="find*" propagation="REQUIRED" read-only="true"/>
            <tx:method name="*" propagation="REQUIRED"/>
    -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="transfer" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <!--使用aop确定切入点
            advice-ref通知确定事务详情
            pointcut切入点表达式
    -->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.hujp.service..*.*(..))"></aop:advisor>
    </aop:config>
</beans>

applicationContext.xml

五、spring注解式管理事务

事务管理一般是在service层进行管理，所以继续从第一个无事务操作的项目中更改两个文件，一个是applicationContext.xml配置文件，另一个是AccountServiceImpl类

注解中参数方式配置事务详情

<?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: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">
    <!--配置数据源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
        <property name="jdbcUrl" value="jdbc:mysql:///spring_transaction"></property>
        <property name="user" value="root"></property>
        <property name="password" value="hjp123"></property>
    </bean>
    <!--配置Dao-->
    <bean id="accountDao" class="com.hujp.dao.impl.AccountDaoImpl">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--配置Service-->
    <bean id="accountService" class="com.hujp.service.impl.AccountServiceImpl">
        <property name="accountDao" ref="accountDao"></property>
    </bean>
    <!--事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--将事务管理器交予spring，注解解析-->
    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
</beans>

applicationContext.xml

package com.hujp.service.impl;

import com.hujp.dao.AccountDao;
import com.hujp.service.AccountService;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

/**
 * Created by JiaPeng on 2015/11/4.
 */
//@Transactional//可应用在类上
@Transactional(propagation = Propagation.REQUIRED,isolation = Isolation.DEFAULT)
public class AccountServiceImpl implements AccountService {

    private AccountDao accountDao;

    public void setAccountDao(AccountDao accountDao) {
        this.accountDao = accountDao;
    }

    @Override
    //@Transactional//也可应用在方法上
    public void transfer(String outUser, String inUser, int money) {
        this.accountDao.out(outUser, money);
        //模拟断电
        //int m=2/0;
        this.accountDao.in(inUser, money);
    }
}

AccountServiceImpl