05 网上商城项目实战之spring mybatis整合

最新推荐文章于 2020-09-30 10:43:09 发布

转载最新推荐文章于 2020-09-30 10:43:09 发布 · 526 阅读

本文介绍如何通过Spring框架整合MyBatis实现持久层操作，包括配置POM.xml、WEB.xml、application-context.xml等文件，设置数据源、事务管理及DAO层操作，并通过测试类验证功能。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

1.配置POM.xml文件 ,配置项目所需jar
2.配置WEB.xml:
配置spring监听器

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:application-context.xml</param-value>
    </context-param>
     
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

3.创建anotation.xml配置文件

<context:component-scan base-package="cn.liu">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
     
    <context:annotation-config/>

4. 创建jdbc.properties和jdbc.xml，并配置：

   driverClass=com.mysql.jdbc.Driver
    jdbcUrl=jdbc:mysql://localhost:3306/shop?characterEncoding=UTF-8
    user=root
    password=
     
    <!-- c3p0-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${driverClass}"/>
        <property name="jdbcUrl" value="${jdbcUrl}"></property>
        <property name="user" value="${user}" />
        <property name="password" value="${password}"/>
    </bean>

5.配置property.xml文件,读取JDBC配置

   <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <!-- JDBC的配置 -->
                <value>classpath:properties/jdbc.properties</value>
            </list>
        </property>
     </bean>

6.配置mybatis.xml文件

    <!-- mybatis org.mybatis.spring.SqlSessionFactoryBean 配置 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:cn/liu/croe/dao/*.xml"/>
        <property name="typeAliasesPackage" value="cn.liu.croe.bean"></property>
    </bean>
     
    <!-- 扫包 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.liu.croe.dao"/>
    </bean>

7.事务管理transation.xml:

    <!-- spring 事务 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
     
    <!-- 开启事务注解 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>

8.UserInfoDAO.xml

<?xml version="1.0" encoding="UTF-8" ?>  
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.liu.croe.dao.UserInfoDAO">
     
    <insert id="add" parameterType="UserInfo">
        insert into user_info (user_name,user_sex)
        values(#{userName},#{userSex})
    </insert>
     
</mapper>

9.事务管理注释:@Transactional

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import cn.liu.croe.bean.UserInfo;
import cn.liu.croe.dao.UserInfoDAO;
import cn.liu.croe.service.IUserInfoService;

@Service
@Transactional
public class UserInfoServiceImpl implements IUserInfoService {

   @Autowired
   private UserInfoDAO userdao;

   public void addUser(UserInfo user) {

       int i = userdao.add(user);
       System.out.println(i);

       throw new RuntimeException("运行时异常");

   }

}

10.测试类：

package cn.shop.userinfo;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import cn.liu.croe.bean.UserInfo;
import cn.liu.croe.service.IUserInfoService;
 
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:application-context.xml")
public class UserTest {
    @Autowired
    private IUserInfoService service;
    @Test
    public void testAdd() {
        UserInfo user = new UserInfo();
        user.setUserName("秋香");
        user.setUserSex("女");
        service.addUser(user);
    }
}