Spring的事务控制-基于注解的方式

模拟转账操作，即Jone减少500，tom增加500
如果有疑问请访问spring事务控制-基于xml方式

1.创建数据表

2.创建Account实体类

public class Account {
    private String name;
    private String money;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getMoney() {
        return money;
    }

    public void setMoney(String money) {
        this.money = money;
    }
}

3.创建AccountDao接口及其实现类（接口代码省略）

@Repository("accountDao")
public class AccountDaoImpl implements AccountDao {

    @Autowired
    private JdbcTemplate template;

    @Override
    public void out(String outMan, double money) {
        template.update("update account set money=money-? where name=?",money,outMan);
    }

    @Override
    public void in(String inMan, double money) {
        template.update("update account set money=money+? where name=?",money,inMan);
    }
}

4.创建AccountService接口及其实现类（接口代码省略）

@Service("accountService")
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountDao accountDao;

    @Transactional(isolation = Isolation.READ_COMMITTED,propagation = Propagation.REQUIRED)
    @Override
    public void transfer(String outMan, String inMan,double money) {
        accountDao.out(outMan,money);
        accountDao.in(inMan,money);
    }

}

5.配置spring文件

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

<!--    配置组件扫描-->
    <context:component-scan base-package="com.hao"/>
    <!--开启事务-->
    <tx:annotation-driven transaction-manager="transactionManager"/>

<!--    配置平台事务管理器,当前的DataSourceTransactionManager是jdbc、mybatis技术，如果以后使用了其他技术，则此处需要修改-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

<!--    配置数据源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.cj.jdbc.Driver"/>
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/test?serverTimezone=UTC"/>
        <property name="user" value="root"/>
        <property name="password" value="hao20001010"/>
    </bean>
<!--    将模板对象注入到spring容器-->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"/>
    </bean>
</beans>

6.测试：

public class AccountController {
    public static void main(String[] args) {
        ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
        AccountService service= context.getBean(AccountService.class);
        service.transfer("Jone","tom",500);
    }
}

结果：