package com.hope.service.impl;

import com.hope.dao.IAccountDao;
import com.hope.domain.Account;
import com.hope.service.IAccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

/**
 * @author newcityman
 * @date 2019/11/20 - 16:45
 */
@Service("accountService")
@Transactional(readOnly = true,propagation = Propagation.SUPPORTS)
public class AccountServiceImpl implements IAccountService {
    @Autowired
    private IAccountDao accountDao;

    public Account findAccountById(Integer accountId) {
       return  accountDao.findAccountById(accountId);

    }
   @Transactional(readOnly = false,propagation = Propagation.REQUIRED)
    public void transfer(String sourceName, String targetName, Float money) {
        Account source = accountDao.findAccountByName(sourceName);
        Account targe = accountDao.findAccountByName(targetName);
        source.setMoney(source.getMoney() - money);
        targe.setMoney(targe.getMoney() + money);
        accountDao.updateAccount(source);
//        int i = 1 / 0;
        accountDao.updateAccount(targe);
    }

}

<?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:aop="http://www.springframework.org/schema/aop"
       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/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
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">

    <!--配置spring容器创建时要扫描的包-->
    <context:component-scan base-package="com.hope"></context:component-scan>

    <!--配置jdbcTemplate-->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!--数据源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/easy"/>
        <property name="username" value="root"/>
        <property name="password" value="123"/>
    </bean>

    <!--spring中基于注解的声明式事务控制配置步骤
      1、配置事务管理器
      2、开启spring对注解事务的支持
      3、在需要事务支持的地方使用@transactional

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

    <!--开启spring对注解事务的支持-->
    <tx:annotation-driven transaction-manager="transactionManager" ></tx:annotation-driven>
</beans>