ssm/build/classes/mapper/article.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">
<!-- 配置Mabatis映射文件 -->
<mapper namespace="com.dao.ArticleDAO">
  <resultMap type="article" id="articleMap">
    <id property="articleid" column="articleid" />
    <result property="title" column="title" />
    <result property="bannerid" column="bannerid" />
    <result property="image" column="image" />
    <result property="istop" column="istop" />
    <result property="isflv" column="isflv" />
    <result property="contents" column="contents" />
    <result property="addtime" column="addtime" />
    <result property="hits" column="hits" />
    <result property="bannername" column="bannername" />
  </resultMap>
  <!-- 插入语句 DAO通过id调用此配置 -->
  <insert id="insertArticle" parameterType="article">
    insert into article(articleid , title , bannerid , image , istop , isflv , contents , addtime , hits )
    values(#{articleid} , #{title} , #{bannerid} , #{image} ,
    #{istop} , #{isflv} , #{contents} , #{addtime} , #{hits} )
  </insert>
  <!-- 更新语句 DAO通过id调用此配置 -->
  <update id="updateArticle" parameterType="article">
    update article set title=#{title} , bannerid=#{bannerid} , image=#{image} , istop=#{istop} , isflv=#{isflv} ,
    contents=#{contents} , addtime=#{addtime} ,
    hits=#{hits} where articleid=#{articleid}
  </update>
  <!-- 按主键删除 DAO通过id调用此配置 -->
  <delete id="deleteArticle" parameterType="String">
    delete from article where articleid = #{articleid}
  </delete>
  <!-- 查询全部信息 DAO通过id调用此配置 -->
  <select id="getAllArticle" resultMap="articleMap">
    select a.* , b.bannername from article a , banner b where a.bannerid = b.bannerid order by articleid desc
  </select>
  <select id="getFlvArticle" resultMap="articleMap">
    select a.* , b.bannername
    from article a , banner b where a.bannerid = b.bannerid and isflv =
    '是' order by
    articleid
    desc limit 7
  </select>
  <select id="getTopArticle" resultMap="articleMap">
    select a.* , b.bannername
    from article a , banner b where a.bannerid = b.bannerid and istop = '是' order by articleid desc limit 7
  </select>
  <select id="getArticleByBanner" parameterType="String" resultMap="articleMap">
    select a.* , b.bannername from article a , banner b where
    a.bannerid =
    b.bannerid and
    a.bannerid = #{bannerid} order by
    articleid
    desc limit 7
  </select>
  <!-- 按主键查询 DAO通过id调用此配置 -->
  <select id="getArticleById" parameterType="String" resultMap="articleMap">
    select a.* , b.bannername from article a , banner b where a.bannerid = b.bannerid
    and articleid=#{articleid} order by articleid desc
  </select>
  <!-- 按条件精确查询 DAO通过id调用此配置 -->
  <select id="getArticleByCond" parameterType="article" resultMap="articleMap">
    select a.* , b.bannername from article a , banner b where a.bannerid = b.bannerid
    <if test="title != null and '' != title">
      and a.title = #{title}
    </if>
    <if test="bannerid != null and '' != bannerid">
      and a.bannerid = #{bannerid}
    </if>
    <if test="image != null and '' != image">
      and a.image = #{image}
    </if>
    <if test="istop != null and '' != istop">
      and a.istop = #{istop}
    </if>
    <if test="isflv != null and '' != isflv">
      and a.isflv = #{isflv}
    </if>
    <if test="contents != null and '' != contents">
      and a.contents = #{contents}
    </if>
    <if test="addtime != null and '' != addtime">
      and a.addtime = #{addtime}
    </if>
    <if test="hits != null and '' != hits">
      and a.hits = #{hits}
    </if>
  </select>
  <!-- 按条件模糊查询 DAO通过id调用此配置 -->
  <select id="getArticleByLike" parameterType="article" resultMap="articleMap">
    select a.* , b.bannername from article a , banner b where a.bannerid = b.bannerid
    <if test="title != null and '' != title">
      and a.title like CONCAT('%', CONCAT(#{title}, '%'))
    </if>
    <if test="bannerid != null and '' != bannerid">
      and b.bannername like CONCAT('%', CONCAT(#{bannerid}, '%'))
    </if>
    <if test="image != null and '' != image">
      and a.image like CONCAT('%', CONCAT(#{image}, '%'))
    </if>
    <if test="istop != null and '' != istop">
      and a.istop like CONCAT('%', CONCAT(#{istop}, '%'))
    </if>
    <if test="isflv != null and '' != isflv">
      and a.isflv like CONCAT('%', CONCAT(#{isflv}, '%'))
    </if>
    <if test="contents != null and '' != contents">
      and a.contents like CONCAT('%', CONCAT(#{contents}, '%'))
    </if>
    <if test="addtime != null and '' != addtime">
      and a.addtime like CONCAT('%', CONCAT(#{addtime}, '%'))
    </if>
    <if test="hits != null and '' != hits">
      and a.hits like CONCAT('%', CONCAT(#{hits}, '%'))
    </if>
  </select>
</mapper>