spring-事务管理

xml注解：注解和xml混合使用

<?xml version="1.0" encoding="UTF-8"?>
       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:td="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/context https://www.springframework.org/schema/context/spring-context.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">
    
    
    
        
        
        
        

    
    
    
        
        
    
    
    
        
    
    
    
    
    
        
            
            
        
    
    
    
        
        
       
        
    

只需要在service上写上这个注解即可：

@Transactional  里面可以设置参数类型 ：
源码如下 

@AliasFor("transactionManager")
String value() default "";

@AliasFor("value")
String transactionManager() default "";

Propagation propagation() default Propagation.REQUIRED;

Isolation isolation() default Isolation.DEFAULT;

int timeout() default -1;

boolean readOnly() default false;

Class<? extends Throwable>[] rollbackFor() default {};

String[] rollbackForClassName() default {};

Class<? extends Throwable>[] noRollbackFor() default {};

String[] noRollbackForClassName() default {};

 基于全注解的开发：

config类如下：

package com.config;

import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@ComponentScan(basePackages = "com")
@EnableTransactionManagement//开启事务
public class Txconfig {
    @Bean
    public DruidDataSource getDruidDataSource(){
        DruidDataSource druidDataSource = new DruidDataSource();
        druidDataSource.setDriverClassName("com.mysql.jdbc.Driver");
        druidDataSource.setUrl("jdbc:mysql://localhost:3306/user_db?useUnicode=true&characterEncoding=utf-8");
        druidDataSource.setUsername("root");
        druidDataSource.setPassword("110120");
        return druidDataSource;

    }
    @Bean
    public JdbcTemplate getJdbcTemplate(){
        JdbcTemplate jdbcTemplate = new JdbcTemplate();
        jdbcTemplate.setDataSource(getDruidDataSource());
        return jdbcTemplate;
    }
    //创建事务管理器
    public DataSourceTransactionManager getDataSourceTransactionManager(){
        DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager();
        dataSourceTransactionManager.setDataSource(getDruidDataSource());
        return  dataSourceTransactionManager;
    }
}

测试类：
　　

package com.test;

import com.config.Txconfig;
import com.service.UserService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestAcount {
    /**
     * 测试事务
     * 案例：lucy向 mary转账100   lucy and mary 各自1000元
     */
    @Test
    public void testAcount(){
        ApplicationContext context = new ClassPathXmlApplicationContext("bean2.xml");
        UserService userService = context.getBean("userService", UserService.class);
        userService.accountMoney();
    }
    /**
     * 测试txconfig类的事务操作
     * 案例：lucy向 mary转账100   lucy and mary 各自1000元
     */
    @Test
    public void testAcount2(){
        ApplicationContext context = new AnnotationConfigApplicationContext(Txconfig.class);
        UserService userService = context.getBean("userService", UserService.class);
        userService.accountMoney();
    }
}
数据库表格如下：
　　

 完结！