shenxingjian/target/classes/mapper/MessageMapper.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="com.yc.education.mapper.MessageMapper" >
  <resultMap id="BaseResultMap" type="com.yc.education.model.Message" >
    <!--
      WARNING - @mbggenerated
    -->
    <id column="id" property="id" jdbcType="BIGINT" />
    <result column="name" property="name" jdbcType="VARCHAR" />
    <result column="email" property="email" jdbcType="VARCHAR" />
    <result column="details" property="details" jdbcType="VARCHAR" />
    <result column="createtime" property="createtime" jdbcType="TIMESTAMP" />
  </resultMap>
   <!-- 后台留言根据姓名模糊查询 -->
   <select id="listMessageCreatetime" resultMap="BaseResultMap">
  	select * from message
  	<where>
  			<if test="name != null and name != '' ">
  			and name like concat('%',#{name},'%')
  			</if>
  	</where>
  	order by createtime desc
   </select>
</mapper>