Spring整合mybatis

Spring集成mybatis

一、创建实体类

package com.wuxin.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
    private int id;
    private String name;
    private String pwd;
}

二、创建接口

package com.wuxin.mapper;

import com.wuxin.pojo.User;

import java.util.List;
import java.util.Map;

public interface UserMapper {
    public int addUser(User user);
    public int delUser(int id);
    public int upUser(Map map);
    public List<User>selectAll();
}

三、创建接口对应的实现类

package com.wuxin.mapper;

import com.wuxin.pojo.User;
import org.mybatis.spring.support.SqlSessionDaoSupport;

import java.util.List;
import java.util.Map;

public class UserMapperImpl extends SqlSessionDaoSupport implements UserMapper {
    public int addUser(User user) {
        return getSqlSession().getMapper(UserMapper.class).addUser(user);

    }

    public int delUser(int id) {
        return getSqlSession().getMapper(UserMapper.class).delUser(id);
    }

    public int upUser(Map map) {
        return getSqlSession().getMapper(UserMapper.class).upUser(map);
    }


    public List<User> selectAll() {
        return getSqlSession().getMapper(UserMapper.class).selectAll();
    }

}

四、创建接口对应的xml文件

<?xml version="1.0" encoding="gbK" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!--configuration核心配置文件-->
<mapper namespace="com.wuxin.mapper.UserMapper">

    <insert id="addUser" parameterType="user">
        insert into mybatis.user(id, name, pwd)
        values (#{id},#{name},#{pwd});
    </insert>

    <delete id="delUser">
        delete from mybatis.user
        where id = #{id}
    </delete>

    <update id="upUser" parameterType="user">
        update mybatis.user
        set id = #{id},name=#{name},pwd=#{pwd}
        where id = #{id};
    </update>

    <select id="selectAll" resultType="user">
        select * from mybatis.user
    </select>


</mapper>

五、创建mybatis-config.xml、spring-dao.xml、applicationContext.xml配置文件

<?xml version="1.0" encoding="gbK" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<!--configuration核心配置文件-->
<configuration>
    
    <typeAliases>
        <package name="com.wuxin.pojo"/>
    </typeAliases>
</configuration>

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

    <!--DataSource配置数据库连接-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&amp;characterEncoding=UTF-8"/>
        <property name="username" value="root"/>
        <property name="password" value="123123"/>
    </bean>
    <!--配置sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--Mybatis配置文件-->
        <property name="configLocation" value="mybatis-config.xml"/>
        <!--解析xml-->
        <property name="mapperLocations" value="classpath:com/wuxin/mapper/*.xml"/>
    </bean>
</beans>

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

    <import resource="spring-dao.xml"/>
    
    <bean id="userMapper" class="com.wuxin.mapper.UserMapperImpl">
        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
    </bean>
</beans>

六、创建测试类

import com.wuxin.mapper.UserMapper;
import com.wuxin.pojo.User;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.HashMap;
import java.util.Map;

public class MyTest {
    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("application.xml");
        UserMapper userMapper = context.getBean("userMapper", UserMapper.class);
        User user1 = new User();
        user1.setId(5);
        user1.setName("五星");
        user1.setPwd("666665");

        userMapper.addUser(user1);

        for (User user : userMapper.selectAll()) {
            System.out.println(user);
        }

        userMapper.delUser(5);

        for (User user : userMapper.selectAll()) {
            System.out.println(user);
        }

        Map map = new HashMap();
        map.put("id",4);
        map.put("pwd","454568");


        userMapper.upUser(map);

        for (User user : userMapper.selectAll()) {
            System.out.println(user);
        }

    }
}