SpringBoot整合MyBatis(XML)

(1)、添加依赖

        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>

（2）、编写Mapper接口类

package cn.coreqi.mapper;

import cn.coreqi.entities.User;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface UserMapper {

    public User getUserById(Integer id);

    public int addUser(User user);

    public int modifyUser(User user);

    public int delUserById(Integer id);
}

（3）、编写Mybatis配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="True"/>
    </settings>
</configuration>

（4）、编写Mapper接口对应的Mapper配置文件

<?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.coreqi.mapper.UserMapper">
    <select id="getUserById" resultType="cn.coreqi.entities.User">
        select * from users where Id = #{id}
    </select>

    <insert id="addUser" useGeneratedKeys="true" keyProperty="Id">
        insert into users(UserName,PassWord,Enabled) values(#{UserName},#{PassWord},#{Enabled})
    </insert>

    <update id="modifyUser">
        update users set UserName = #{UserName},PassWord = #{PassWord},Enabled = #{Enabled} where Id = #{Id}
    </update>

    <delete id="delUserById">
        delete from users where Id = #{id}
    </delete>
</mapper>

（5）、在配置文件中配置mybatis

spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.url=jdbc:mysql://localhost:3306/JdbcDemo?serverTimezone=UTC
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

mybatis.config-location=classpath:mybatis/mybatis-config.xml
mybatis.mapper-locations=classpath:mybatis/mapper/*.xml