spring-210729-05---事务操作-Spring声明式事务管理-xml方式

spring-210729-05—事务操作-Spring声明式事务管理-xml方式

• 演示
• UserDao03.java
• UserDao03.java
• UserService03.java
• bean03.xml
• TestUser03.java

---

在Spring配置文件中进行配置
	1）配置事务管理器
	2）配置通知
	3）配置切入点和切面

---

演示

UserDao03.java

package com.bgy.spring.dao;
public interface UserDao03 {

    // 多钱
    void addMoney();
    // 少钱
    void reduceMoney();
}

---

UserDaoImpl03.java

package com.bgy.spring.dao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

@Repository
public class UserDaoImpl03 implements UserDao03{

    // 注入JdbcTemplate
    @Autowired
    private JdbcTemplate jdbcTemplate;

    /**
     * 多钱
     */
    @Override
    public void addMoney() {
        String sql = "update t_account set money=money-? where id=?";

        int update = jdbcTemplate.update(sql, "100","1001");
        System.out.println(update);
    }

    /**
     * 少钱
     */
    @Override
    public void reduceMoney() {
        String sql = "update t_account set money=money+? where id=?";

        int update = jdbcTemplate.update(sql, "100", "1002");
        System.out.println(update);
    }
}

---

UserService03.java

package com.bgy.spring.service;

import com.bgy.spring.dao.UserDao03;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
//@Transactional(propagation = Propagation.REQUIRED,isolation = Isolation.REPEATABLE_READ,timeout = -1,readOnly = false)  // 事务注解
public class UserService03 {

    // 注入UserDao03
    @Autowired
    private UserDao03 userDao03;

    /**
     * 转账
     */
    public void accountMoney(){
        userDao03.reduceMoney();

        // 手动创建一个异常，测试事务
        int a=10/0;

        userDao03.addMoney();
    }
}

---

bean03.xml

<?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">


    <!-- 开启组件扫描 -->
    <context:component-scan base-package="com.bgy.spring"></context:component-scan>


    <!-- 数据库连接池 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
          destroy-method="close">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://localhost:3306/spring_test_210728_01?serverTimezone=UTC&amp;useSSL=false" />
        <property name="username" value="root" />
        <property name="password" value="admin" />
    </bean>


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


    <!-- 1）创建事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 注入数据源 -->
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!-- 2）配置通知 -->
    <tx:advice id="txadvice">
        <!-- 配置事务参数 -->
        <tx:attributes>
            <!-- 指定哪种规则的方法上面添加事务 -->
            <tx:method name="accountMoney" propagation="REQUIRED"/>
            
            <!--<tx:method name="account*"></tx:method>-->
        </tx:attributes>
    </tx:advice>

    <!-- 3）配置切入点和切面 -->
    <aop:config>
        <!-- 配置切入点 -->
        <aop:pointcut id="pt" expression="execution(* com.bgy.spring.service.UserService03.*(..))"/>
        <!-- 配置切面 -->
        <aop:advisor advice-ref="txadvice" pointcut-ref="pt"></aop:advisor>
    </aop:config>
</beans>

---

TestUser03.java

import com.bgy.spring.service.UserService02;
import com.bgy.spring.service.UserService03;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestUser03 {

    /**
     * 测试转账功能
     */
    @Test
    public void test01(){
        ApplicationContext context = new ClassPathXmlApplicationContext("bean03.xml");

        UserService03 userService03 = context.getBean("userService03", UserService03.class);
        userService03.accountMoney();
    }

}