基于SSM框架的web入门项目(五)学习记录

配合哔哩哔哩视频学习【SSM 框架】SpringMVC+Spring+Mybatis SSM 整合+实战+源码13集

5.MyBatis整合Spring-整合JDBC事务

5.1.修改applicationContext.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">
	
	<!-- 读取jdbc.properties -->
	<context:property-placeholder location="classpath:jdbc.properties"/>
	
	<!-- 创建DataSource -->
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="url" value="${jdbc.url}"/>
		<property name="driverClassName" value="${jdbc.driverClass}"/>
		<property name="username" value="${jdbc.user}"/>
		<property name="password" value="${jdbc.password}"/>
		<property name="maxActive" value="10"/>
		<property name="maxIdle" value="5"/>
	</bean>	
	
	<!-- 创建SqlSessionFactory对象 -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 关联连接池 -->
		<property name="dataSource" ref="dataSource"/>
		<!-- 加载sql映射文件 -->
		<property name="mapperLocations" value="classpath:mapper/*.xml"/>
	</bean>
	
	<!-- 配置Mapper接口扫描 -->	
	<!-- 
		注意：如果使用Mapper接口包扫描，那么每个maopper接口在spring容器中的id名称为类名：例如CustomerMapper->customerMapper
	 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<!-- 配置mapper接口所在包的路径 -->
		<property name="basePackage" value="com.ssmlcx.dao"/>
	</bean>
	
	<!-- 开启spring的IOC注解扫描 -->
	<context:component-scan base-package="com.ssm"></context:component-scan>
	
	
	<!-- 开启spring的事务管理 -->
	<!-- 事务管理器 -->
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource"/>
	</bean>
	
	<!-- 启用spring事务注解 -->
	<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

5.2.在业务方法上添加注释

package com.ssm.service.impl;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.ssm.dao.CustomerMapper;
import com.ssm.domain.Customer;
import com.ssm.service.CustomerService;

@Service("customerServiceImpl")
@Transactional
public class CustomerServiceImpl implements CustomerService {
	//注入mapper对象
	@Resource
	private CustomerMapper customerMapper;
	
	
	public void saveCustomer(Customer customer) {
		customerMapper.saveCustomer(customer);
		
		//模拟异常
		int i = 100/0;
		customerMapper.saveCustomer(customer);
		
	}

}

5…测试类

package com.ssm.test;

import java.io.IOException;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.ssm.dao.CustomerMapper;
import com.ssm.domain.Customer;
import com.ssm.service.CustomerService;



public class MyBatisSpringTest {
	@org.junit.Test
	public void Test() throws IOException
	{
		//1.加载spring配置
		
		ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
		
		CustomerService customerService = (CustomerService)ac.getBean("customerServiceImpl");
		
		CustomerMapper customerMapper = (CustomerMapper)ac.getBean("customerMapper");
		
		//3.调用父类方法
		Customer customer = new Customer();
		customer.setName("老李6666");
		customer.setGender("男");
		customer.setTelephone("020-77777");
		customer.setAddress("清华紫光");
		customerService.saveCustomer(customer);
	}
}

结果：

数据库中无数据加入，事务发生回滚