Spring中transaction-manager事件处理

Spring中transaction-manager事件处理

Spring.xml文件配置

<?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:aop="http://www.springframework.org/schema/aop"
       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.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
">
    <!--spring注解扫描-->
    <context:component-scan base-package="com.msb" ></context:component-scan>
    <!--引入外部文件-->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    <!--配置德鲁伊连接池-->
    <bean id="DataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="username" value="${jdbc_username}"></property>
        <property name="password" value="${jdbc_password}"></property>
        <property name="url" value="${jdbc_url}"></property>
        <property name="driverClassName" value="${jdbc_driver}"></property>
    </bean>
    <!--配置jdbcTemplate对象，并注入到德鲁伊数据池中-->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="DataSource"></property>
    </bean>
    <!--开启自动生成代理对象-->
    <aop:aspectj-autoproxy/>
    <!-- 配置一个事务管理器-->
    <bean id="DataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--将数据源注入-->
        <property name="dataSource" ref="DataSource"></property>
    </bean>
    <!--开启事务注解-->
    <tx:annotation-driven transaction-manager="DataSourceTransactionManager" />
</beans>

jdbc文件配置

jdbc_username=root
jdbc_password=root
jdbc_driver=com.mysql.cj.jdbc.Driver
jdbc_url=jdbc:mysql://127.0.0.1:3306/testtable?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai&allowPublicKeyRetrieval=true

Pom文件配置

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>Spring</artifactId>
        <groupId>com.msb</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>jdbc_tx</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <packaging>jar</packaging>
    <dependencies>
        <!--spring核心核心容器包-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.3.5</version>
        </dependency>
        <!--junit测试文件包-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.1</version>
            <scope>test</scope>
        </dependency>
        <!--spring切面包-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>5.3.5</version>
        </dependency>
        <!--aop联盟包-->
        <dependency>
            <groupId>aopalliance</groupId>
            <artifactId>aopalliance</artifactId>
            <version>1.0</version>
        </dependency>
        <!--德鲁伊连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>
        <!--mysql驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.22</version>
        </dependency>
        <!--springJDBC包-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.5</version>
        </dependency>
        <!--spring事务控制包-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.3.5</version>
        </dependency>
        <!--spring orm 映射依赖-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>5.3.5</version>
        </dependency>
        <!--Apache Commons日志包-->
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency><!--lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>
</project>

Service接口配置

package com.msb.service;

public interface AccountService {
    //构建一个转账的方法
    int transMoney(int from,int to,double money);
}

实现类

package com.msb.service.impl;

import com.msb.dao.AccountDao;
import com.msb.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.beans.Transient;

@Service
public class AccountServiceImpl implements AccountService {
    @Autowired
    private AccountDao accountDao;
    int rows=0;
    @Override
    @Transactional//加在类上,代表类中的所有方法都添加了事务控制
    //从一处获取钱；另一侧支付
    public int transMoney(int from, int to, double money) {
        //支出
        rows += accountDao.transMoney(from, 0.0 - money);//一开始丢过去一个负数，让支出者加-money
        //制造异常
        int i =1/0;
        //入账
        rows += accountDao.transMoney(to, money);//让收入者- -money
        return rows;
    }
}

实体类

package com.msb.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

@AllArgsConstructor
@NoArgsConstructor
@Data
public class Account implements Serializable {
    private Integer id;
    private String name;
    private double income;
}

Dao层接口

package com.msb.dao;

public interface AccountDao {
    //根据id修改money的方法
    int transMoney (int id ,double money );

}

Dao层实现类

package com.msb.dao.impl;

import com.msb.dao.AccountDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

@Repository
public class AccountDaoImpl implements AccountDao {
    @Autowired
    private JdbcTemplate jdbcTemplate;
    @Override
    public int transMoney(int id, double money) {
        return  jdbcTemplate.update("update t_counnt set income =income+? where id=?", money, id);
    }
}

测试类

import com.msb.service.AccountService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class test {
    @Test
    public void test1(){
        ApplicationContext context = new ClassPathXmlApplicationContext("Application.xml");
        AccountService accountService = context.getBean(AccountService.class);
        int rows = accountService.transMoney(1, 2, 100);
        System.out.println(rows);
    }
}