文章目录前言一、Spring事务简介二、案例银行账户转账1.题目要求和思路分析2.实现步骤3.实现结构三、spring事务角色四、spring事务相关配置五、案例转账业务追加日志1.题目要求和思路分析2.解决方案和代码实现总结前言

一、Spring事务简介

com.alibaba.druid.pool.DruidDataSource;

import

org.springframework.beans.factory.annotation.Value;

import

org.springframework.context.annotation.Bean;

import

org.springframework.jdbc.datasource.DataSourceTransactionManager;

import

org.springframework.transaction.PlatformTransactionManager;import

class

drive;Value(${jdbc.url})private

String

url;Value(${jdbc.username})private

String

username;Value(${jdbc.password})private

String

DruidDataSource();ds.setDriverClassName(drive);ds.setUrl(url);ds.setUsername(username);ds.setPassword(password);return

dataSource){DataSourceTransactionManager

DataSourceTransactionManager();transactionManager.setDataSource(dataSource);return

transactionManager;}

org.mybatis.spring.SqlSessionFactoryBean;

import

org.mybatis.spring.mapper.MapperScannerConfigurer;

import

org.springframework.context.annotation.Bean;import

class

{//定义beanSqlSessionFactoryBean用于产生SqlSessionFactory对象Beanpublic

dataSource){SqlSessionFactoryBean

ssfbnew

SqlSessionFactoryBean();ssfb.setTypeAliasesPackage(org.example.domain);ssfb.setDataSource(dataSource);return

ssfb;}//定义bean返回MapperScannerConfigurer对象Beanpublic

mapperScannerConfigurer(){MapperScannerConfigurer

mscnew

MapperScannerConfigurer();msc.setBasePackage(org.example.dao);return

msc;}

org.springframework.context.annotation.*;

import

org.springframework.transaction.annotation.EnableTransactionManagement;Configuration

PropertySource(classpath:jdbc.properties)

Import({JdbcConfig.class,MybatisConfig.class})

public

org.apache.ibatis.annotations.*;

import

org.example.domain.Account;import

interface

org.springframework.transaction.annotation.Transactional;public

interface

org.example.service.impl;import

import

org.example.service.AccountService;

import

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

import

org.springframework.stereotype.Service;Service

public

{accountDao.outMoney(out,money);int

i10/0;accountDao.inMoney(in,money);}

AccountServiceTest

org.example.config.SpringConfig;

import

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

import

org.springframework.test.context.ContextConfiguration;

import

org.springframework.test.context.junit4.SpringJUnit4ClassRunner;//设定类运行器

RunWith(SpringJUnit4ClassRunner.class)

SpringConfig.class)

Exception{accountService.transfer(Tom,Jerry,100.0);}

jdbc.properties

jdbc.drivercom.mysql.cj.jdbc.Driver

jdbc.urljdbc:mysql://localhost:3306/spring_db?useSSLfalse

jdbc.usernameroot

有些异常是默认不参加回滚的。

只有运行时异常和Error的错误spring会自动回滚其他异常是不参加回滚所以要设置事务回滚异常

五、案例转账业务追加日志

org.apache.ibatis.annotations.Insert;public

interface

org.springframework.transaction.annotation.Propagation;

import

org.springframework.transaction.annotation.Transactional;public

interface

org.example.service.impl;import

import

org.example.service.LogService;

import

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

import

org.springframework.stereotype.Service;Service

public

{logDao.log(转账操作由out到in,金额money);}

AccountServiceImpl

org.example.service.impl;import

import

org.example.service.AccountService;

import

org.example.service.LogService;

import

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

import

org.springframework.stereotype.Service;Service

public

{accountDao.outMoney(out,money);accountDao.inMoney(in,money);}finally

{logService.log(out,in,money);}}

其余代码按照上面银行转账的操作进行编写须注意数据库要新建tbl_log的表。

本节主要讲了spring中对于事务的处理并分析事务管理的一些小案例

参考视频