diff --git a/ForumDao.xml b/ForumDao.xml
new file mode 100644
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+++ b/ForumDao.xml
@@ -0,0 +1,202 @@
+<?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.forum.dao.ForumDao">
+
+    <resultMap id="forum" type="Forum">
+        <id property="id" column="id"/>
+        <result property="title" column="title"/>
+        <result property="content" column="content"/>
+        <result property="flag" column="flag"/>
+        <result property="views" column="views"/>
+        <result property="updateTime" column="update_time"/>
+        <result property="avatars" column="avatars"/>
+        <result property="commentabled" column="commentabled"/>
+        <result property="description" column="description"/>
+        <result property="createTime" column="create_time"/>
+        <result property="userId" column="user_id"/>
+        <result property="like" column="like"/>
+        <result property="tagIds" column="tag_ids"/>
+        <association property="user" javaType="User">
+            <id property="id" column="uid"/>
+            <result property="nickname" column="nickname"/>
+            <result property="username" column="username"/>
+            <result property="email" column="email"/>
+            <result property="avatar" column="avatar"/>
+        </association>
+        <collection property="tags" ofType="Tag">
+            <id property="id" column="tagid"/>
+            <result property="name" column="tagname"/>
+        </collection>
+<!--        <collection property="tagsId" ofType="tagIds">-->
+<!--            <result property="tag_id" column="tag_id"/>-->
+<!--        </collection>-->
+    </resultMap>
+
+    <resultMap id="ForumAndIds" type="forum">
+        <id property="id" column="id"/>
+        <result property="title" column="title"/>
+        <result property="updateTime" column="update_time"/>
+<!--        <collection property="tagsId" ofType="tagIds">-->
+<!--            <result property="tag_id" column="tag_id"/>-->
+<!--        </collection>-->
+    </resultMap>
+
+    <delete id="deleteForum">
+        delete from forum where id = #{id}
+    </delete>
+
+    <select id="getIndexForum" resultMap="forum">  /*主页帖子展示*/
+        select b.id, b.title, b.avatars,b.flag, b.views, b.create_time, b.description,b.like,
+        a.username, a.avatar
+        from forum b,user a
+        where  a.id = b.user_id order by b.create_time desc
+    </select>
+
+    <select id="getForumTadIds" resultMap="forum">  /*主页帖子展示*/
+       select b.id, b.title, b.avatars, b.views, b.update_time, b.description,b.like,
+        a.username, a.avatar,
+        bt.tag_id
+        from user a,forum b
+        left join forum_tags bt on b.id=bt.forum_id
+         where  a.id = b.user_id
+--         order by b.update_time desc
+
+
+
+-- 0.0.
+-- 0
+    </select>
+
+
+    <select id="getAllForum" resultMap="forum">  /*后台帖子展示*/
+         select b.id, b.title, b.create_time, b.commentabled
+        from forum b  order by b.create_time desc
+    </select>
+
+
+    <select id="getByTagId" resultMap="forum">
+        select b.id, b.title,b.flag, b.avatars, b.views, b.update_time, b.description,
+        t1.name tagname, t1.id tagid,
+        a.username, a.avatar
+        from forum b,  user a, forum_tags tb, tag t1
+        where  a.id = b.user_id and tb.forum_id = b.id and tb.tag_id = t1.id and t1.id = #{tagId}
+        order by b.update_time desc
+    </select>
+
+
+    <select id="getForum" resultMap="forum"> /*后台展示帖子*/
+        select b.id, b.flag, b.title, b.content,
+         b.tag_ids, b.avatars, b.description, b.commentabled
+        from forum b  where  b.id = #{id};
+    </select>
+
+    <select id="getDetailedForum" resultMap="forum">  /*帖子详情*/
+        select b.id, b.avatars, b.flag, b.title, b.content, b.views,
+        b.commentabled,b.like,a.username, a.avatar,tag.id tagid, tag.name tagname
+        from forum b, user a, tag tag, forum_tags tb
+        where b.user_id = a.id and tb.forum_id = b.id and tb.tag_id = tag.id and  b.id = #{id}
+    </select>
+
+    <select id="getSearchForum" resultMap="forum">
+        <bind name="pattern" value="'%' + query + '%'"/>
+        select b.id, b.title, b.avatars, b.views, b.create_time, b.description,b.like,
+        a.username, a.avatar
+        from forum b, user a
+        where a.id = b.user_id and (b.title like #{pattern} or b.content like #{pattern})
+        order by b.create_time desc
+    </select>
+
+    <select id="searchAllForum" parameterType="Forum" resultMap="forum">
+        <bind name="pattern" value="'%' + title + '%'"/>
+        /*模糊查询*/
+        select b.id, b.title, b.update_time, b.published, t.id, t.name
+        from forum b where b.title like #{pattern}
+
+    </select>
+
+    <update id="updateForum" parameterType="Forum">
+        update forum set flag = #{flag} ,
+        title = #{title}, content = #{content}, tag_ids = #{tagIds},
+        avatars = #{avatars} , description = #{description}  ,
+        commentabled = #{commentabled} ,update_time = #{updateTime} where id = #{id};
+    </update>
+    <update id="updateView">
+        update forum b set b.views=b.views+1 where id=#{id};
+    </update>
+    <!--useGeneratedKeys="true"；使用自增主键获取主键值策略
+        keyProperty；指定对应的主键属性，也就是mybatis获取到主键值以后，将这个值封装给javaBean的哪个属性
+    -->
+    <insert id="saveForum" parameterType="Forum" useGeneratedKeys="true" keyProperty="id">
+        insert into forum (title, content, avatars, flag,
+        views, commentabled, create_time, update_time,  tag_ids, user_id, description)
+        values (#{title}, #{content}, #{avatars}, #{flag}, #{views}, #{commentabled}, #{createTime},
+        #{updateTime}, #{tagIds}, #{userId}, #{description});
+    </insert>
+
+    <insert id="saveForumAndTag" parameterType="ForumAndTag">
+        insert into forum_tags (tag_id, forum_id) values (#{tagId},#{forumId});
+    </insert>
+
+
+    <select id="findGroupYear" resultType="String">
+        select DATE_FORMAT(b.updateTime, '%Y') from forum b
+    </select>
+
+<!--    查找所有月份月份-->
+    <select id="findGroupMonth" resultType="String">
+        select DATE_FORMAT(b.update_time, '%M') from forum b order by b.update_time desc
+    </select>
+
+
+<!--    把所有文章下的标签id查询出来-->
+    <select id="findForumAndTagsByYear" resultMap="ForumAndIds">
+     select b.title, b.id,b.update_time,
+            bt.tag_id
+            from forum b
+            left join forum_tags bt on b.id=bt.forum_id
+          where DATE_FORMAT(b.update_time, "%Y") = #{year} order by b.update_time desc;
+    </select>
+
+
+
+<!--    按年份+月份查找-->
+    <select id="findByMonth" resultMap="forum">
+        select b.title, b.update_time, b.id, b.flag
+        from forum b
+        where DATE_FORMAT(b.update_time, "%Y%M") = #{month}
+    </select>
+
+<!--最热推荐-->
+    <select id="findForumByRank" resultType="rankForum">
+        select b.title,b.id from forum b order by b.views desc limit 0,3
+    </select>
+<!--最新推荐-->
+    <select id="getNewForum" resultType="rankForum">
+        select b.title,b.id from forum b order by b.create_time desc limit 0,3
+    </select>
+
+
+
+    <select id="getLike"  resultType="Long">
+        select b.like from forum b where b.id=#{id}
+    </select>
+
+
+    <update id="addLike" >
+    update forum b set b.like=b.like+1 where b.id=#{id}
+    </update>
+
+
+    <select id="countView" resultType="java.lang.Integer">
+        select count(views) from forum
+    </select>
+
+
+
+    <delete id="cancelLike">
+         update forum b set b.like=b.like-1 where b.id=#{forumId}
+    </delete>
+
+</mapper>