MyMapper.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="MyMapper">
    <select id="selectUser" resultType="com.cesgroup.mybatis.entity.User">
      SELECT * FROM user WHERE id = #{id}
    </select>

    <insert id="insert" parameterType="com.cesgroup.mybatis.entity.User">
      INSERT INTO user (id, name, info)
          VALUES(#{id}, #{name}, #{info})
    </insert>
</mapper>