src/com/mapper/Liuyan.xml

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<?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.mapper.LiuyanMapper">
		<resultMap type="Liuyan" id="liuyanResult">
			<id property="id" column="id"/>
			<result property="title" column="title"/>
			<result property="neirong" column="neirong"/>
			<result property="huifu" column="huifu"/>
			<result property="uname" column="uname"/>
			<result property="addtime" column="addtime"/>
		</resultMap>
		<insert id="insert" parameterType="Liuyan">
			insert into liuyan
			<trim prefix="(" suffix=")" suffixOverrides=",">
			<if test="title != null">title,</if>
			<if test="neirong != null">neirong,</if>
			<if test="huifu != null">huifu,</if>
			<if test="uname != null">uname,</if>
			<if test="addtime != null">addtime,</if>
			</trim>
			<trim prefix="values (" suffix=")" suffixOverrides=",">
			<if test="title != null">#{title},</if>
			<if test="neirong != null">#{neirong},</if>
			<if test="huifu != null">#{huifu},</if>
			<if test="uname != null">#{uname},</if>
			<if test="addtime != null">#{addtime},</if>
			</trim>
		</insert>
		<update id="update" parameterType="Liuyan">
			update liuyan
			<trim prefix="set" suffixOverrides=",">
			<if test="title != null">title=#{title},</if>
			<if test="neirong != null">neirong=#{neirong},</if>
			<if test="huifu != null">huifu=#{huifu},</if>
			<if test="uname != null">uname=#{uname},</if>
			<if test="addtime != null">addtime=#{addtime},</if>
		</trim>
			where id=#{id}
		</update>
		<delete id="delete" parameterType="Liuyan">
			delete from liuyan where id= #{id}
		</delete>
		<select id="list" resultType="Liuyan" resultMap="liuyanResult">
			select * from  liuyan where 1=1 ${where} order by id desc
			</select>
		<select id="sealist" resultType="Liuyan" resultMap="liuyanResult">
			select * from  liuyan where 1=1 ${where} 
			</select>
		<select id="get" parameterType="_int" resultType="Liuyan">
			select * from  Liuyan  where id= #{id}
		</select>
			<select id="total" resultType="int">
	        select count(*) from liuyan    
	    </select>
<update id="updatesql"  parameterType="String">
${value}
</update>