Mymapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper  PUBLIC "-//mybatis.org//DTD com.Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.cesgroup.UserMapper"> <!--mapper  -->

    <resultMap type="user" id="userList">
        <!-- type为返回列表元素的类全名或别名 -->
        <result column="id" property="id"/>
        <result column="name" property="name"/>

        <result column="info" property="info"
                typeHandler="com.cesgroup.handle"/>
    </resultMap>


    <insert id="insert" parameterType="user">
    insert into users(id,name,info) values(#{id}, #{name},#{info})
  </insert>
    <select id="selectUser" parameterType="String" resultType="user">
    SELECT * FROM users WHERE name = #{name}
  </select>
    <select id="selectAll" resultMap="userList">
    SELECT * FROM users
  </select>
</mapper>