Mybatis 测试事务

1.简介

2.案例学习

CustomerService .java类

package com.lin.service;

import com.lin.po.Customer;

public interface CustomerService {
	public void addCustomer(Customer customer);
}

CustomerServiceImpl 实现类

package com.lin.service.Impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.lin.mapper.CustomerMapper;
import com.lin.po.Customer;
import com.lin.service.CustomerService;

@Service
//管理事务
@Transactional
public class CustomerServiceImpl implements CustomerService{

	//注解注入CustomerM
	@Autowired
	private CustomerMapper customerMapper;
	//添加客户
	@Override
	public void addCustomer(Customer customer) {
		// TODO Auto-generated method stub
		this.customerMapper.addCustomer(customer);
		
		int i=1/0;//模拟添加操作后，系统突然出现的异常问题
	}

}

在Spring配置文件中加入开启扫描

 <!-- 注解配置,开启扫描 -->
   <context:component-scan base-package="com.lin.service"></context:component-scan>

单元测试

//测试事务
	@Test
	public void addCustomerTest() {
		ApplicationContext applicationContext=new ClassPathXmlApplicationContext("applicationContext.xml");
		CustomerService customerService=	applicationContext.getBean(CustomerService.class);
		Customer customer=new Customer();
		customer.setUsername("zhangsan");
		customer.setJobs("manager");
		customer.setPhone("12358792486");
		customerService.addCustomer(customer);
	}

当事务@Transactional开启后，一旦出现异常，数据库不会添加数据