spring的事务管理(核心事务管理接口:TransactionManager)

本文内容纲要:spring的事务管理(核心事务管理接口:TransactionManager)

事务:事务就是一系列的动作,这些动作要么都完成,要么都不完成。

核心事务管理接口的实现类是DataSourceTransactionManager

spring事务管理的注解使用:

1.导入jar包。

2.定义一个bean事务管理类

3.在配置文件中开启事务管理的注解驱动

spring配置文件:applicationContext.xml

<?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: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-4.2.xsd

              http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd">

 

       <context:component-scan base-package="com.zhiyou100.kfs"></context:component-scan>

       <!-- 配置数据源(里面存放了若干个连接对象):数据库交互的。    数据源:c3p0,druid(阿里) -->

       <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

              <property name="user" value="root"/>

              <property name="password" value="123"/>

              <property name="driverClass" value="com.mysql.jdbc.Driver"></property>

              <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/test"></property>

       </bean>

      

       <!-- 配置springJdbc的模板类 -->

       <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate" autowire="byType">

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

       </bean>

       <!-- 定义一个事务管理类 -->

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

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

       </bean>

       <!-- 开启注解:如果你的事务管理bean的id是transactionManager,属性transaction-manager可以不写 -->

       <tx:annotation-driven transaction-manager="transactionManager"/>

</beans>

4.在事务方法上加事务注解@Transactional

package com.zhiyou100.kfs.service;

 

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

import org.springframework.stereotype.Service;

import org.springframework.transaction.annotation.Propagation;

import org.springframework.transaction.annotation.Transactional;

 

import com.zhiyou100.kfs.dao.BookShopDao;

 

/**

 *   书店Service的接口的实现类

 * @author KFS

 *

 */

@Service

public class BookShopServiceImp implements BookShopService{

       @Autowired

       private BookShopDao bookShopDao;

      

       public void setBookShopDao(BookShopDao bookShopDao) {

              this.bookShopDao = bookShopDao;

       }

       /**

        *   更新用户余额

        */

       @Transactional     //事务注解

       @Override

       public void purchase(String username, String isbn) {

              //查书的价格

              double price=bookShopDao.finBookPriceByIsbn(isbn);

              //更新书的库存

              bookShopDao.updateBookShop(isbn);

              //更新用户余额

              bookShopDao.updateAccount(username, price);

       }

 

}

5.测试

package com.zhiyou100.kfs.dao;

 

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

 

import com.zhiyou100.kfs.service.xml.BookShopService;

 

public class Test {

 

       public static void main(String[] args) {

              ApplicationContext app=new ClassPathXmlApplicationContext("appxml.xml");

              BookShopService bss=(BookShopService)app.getBean("bookShopServiceImp");

              bss.purchase("tom", "001");

       }

 

}

spring事务管理的xml使用:

1.导入jar包

2.定义一个bean事务管理类

3.在事务方法中不用注解

4.在spring配置文件中配置

<?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:tx="http://www.springframework.org/schema/tx"

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

       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-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">

 

       <context:component-scan base-package="com.zhiyou100.kfs.service.xml,com.zhiyou100.kfs.dao"></context:component-scan>

       <!-- 配置数据源(里面存放了若干个连接对象):数据库交互的。    数据源:c3p0,druid(阿里) -->

       <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

              <property name="user" value="root"/>

              <property name="password" value="123"/>

              <property name="driverClass" value="com.mysql.jdbc.Driver"></property>

              <property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/test"></property>

       </bean>

      

       <!-- 配置springJdbc的模板类 -->

       <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate" autowire="byType">

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

       </bean>

       <!-- 定义一个事务管理类 -->

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

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

       </bean>

       <!-- 建议:设置事务方法属性 -->

       <tx:advice transaction-manager="transactionManager" id="advice">

              <tx:attributes>

                     <!-- read-only:只读。用在查询上 -->

                     <tx:method name="query*" read-only="true"/>

                     <tx:method name="purchase" propagation="REQUIRED"/>

                     <tx:method name="insert*"/>

                     <tx:method name="*"/>

              </tx:attributes>

       </tx:advice>

       <!-- xml切面的配置 -->

       <aop:config>

              <!-- 切点 -->

              <aop:pointcut expression="execution(* com.zhiyou100.kfs.service.xml.*.*(..))" id="pointcut"/>

              <aop:advisor advice-ref="advice" pointcut-ref="pointcut"/>

       </aop:config>

</beans>

5.然后测试

本文内容总结:spring的事务管理(核心事务管理接口:TransactionManager)

原文链接:https://www.cnblogs.com/kfsrex/p/11494684.html

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