spring基于注解的声明式事务控制

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>