mapper文件

CommentDao.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.forum.dao.CommentDao">
+
+
+    <resultMap id="comment" type="Comment">
+        <id property="id" column="cid"/>
+        <result property="username" column="username"/>
+        <result property="email" column="email"/>
+        <result property="content" column="content"/>
+        <result property="userComment" column="usercomment"/>
+        <result property="avatar" column="avatar"/>
+        <result property="createTime" column="create_time"/>
+        <result property="forumId" column="forum_id"/>
+        <association property="forum" javaType="Forum">
+            <id property="id" column="id"/>
+        </association>
+    </resultMap>
+    <delete id="delById">
+        delete from comment where id=#{id}
+    </delete>
+
+    <select id="findByForumIdAndParentCommentNull" resultMap="comment">
+        select c.id cid,c.username,c.email,c.content,c.avatar,
+        c.create_time,c.forum_id,c.parent_comment_id
+        from comment c, forum b
+        where c.forum_id = b.id and c.forum_id = #{forumId}
+        order by c.create_time desc
+    </select>
+
+
+    <insert id="saveComment" parameterType="Comment">
+        insert into comment (username,email,content,avatar,
+        create_time,forum_id,parent_comment_id, usercomment)
+        values (#{username},#{email},#{content},#{avatar},
+        #{createTime},#{forumId},#{parentCommentId}, #{userComment});
+    </insert>
+
+
+    <select id="findByParentCommentId" resultMap="comment">
+        select c.id cid, c.username, c.email, c.content, c.avatar,
+        c.create_time, c.forum_id, c.parent_comment_id
+        from comment c
+        where c.parent_comment_id = #{parentCommentId}
+    </select>
+
+    <select id="getAllComment" resultType="com.forum.entity.Comment">
+        select id,username,email,content,create_time from comment
+    </select>
+
+</mapper>

ForumDao.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.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>

LinkDao.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.forum.dao.LinkDao">
+
+
+
+
+    <insert id="saveLink" parameterType="Link">
+        insert into link(name ,address,create_time) values (#{name},#{address},#{createTime});
+    </insert>
+
+
+
+    <delete id="deleteLink">
+        delete from link where id = #{id}
+    </delete>
+    <select id="getAllLink" resultType="Link">
+        select id,name,address,create_time from link
+    </select>
+    <select id="countLink" resultType="java.lang.Integer">
+        select count(*) from link
+    </select>
+
+
+</mapper>

MessageDao.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.forum.dao.MessageDao">
+
+
+
+    <resultMap id="messages" type="message">
+        <id property="id" column="id"/>
+        <result property="content" column="content"/>
+        <result property="name" column="name"/>
+        <result property="msg_avatar" column="msg_avatar"/>
+        <result property="createTime" column="create_time"/>
+
+        <collection property="replies" ofType="reply">
+            <id property="id" column="rid"/>
+            <result property="content" column="con"/>
+<!--            <result property="reply_name" column="reply_name"/>-->
+            <result property="names" column="names"/>
+            <result property="createTime" column="ctime"/>
+            <result property="avatar" column="avatar"/>
+            <result property="mes_id" column="mes_id"/>
+        </collection>
+    </resultMap>
+    <delete id="deleteById">
+        delete from message where id=#{id}
+    </delete>
+
+
+    <select id="findAllMessage" resultMap="messages">
+           select m.*,
+           r.id rid,
+        r.content con,
+        r.names names,
+        r.create_time ctime,
+        r.avatar,
+        r.mes_id
+         from message m left join reply r on r.mes_id=m.id
+           order by m.create_time desc
+    </select>
+    <select id="getIndexMessage" resultMap="messages">
+           select m.*
+            from message m
+            order by m.create_time desc
+            limit 0,6
+
+
+
+
+    </select>
+    <select id="findAll" resultType="com.forum.entity.Message">
+       select id,content,name, create_time from  message
+    </select>
+
+    <insert id="saveMessage" parameterType="message">
+        insert into message (content,name,create_time,msg_avatar)
+        values (#{content},#{name},#{createTime},#{msg_avatar})
+    </insert>
+
+    <insert id="saveReplyMessage" parameterType="reply">
+        insert into reply (content,names,create_time,mes_id,avatar)
+        values (#{content},#{names},#{createTime},#{mes_id},#{avatar})
+    </insert>
+
+</mapper>

NoticeDao.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.forum.dao.NoticeDao">
+    <select id="findAllNotice" resultType="notice">
+        select * from notice
+    </select>
+    <select id="countNotice" resultType="java.lang.Integer">
+        select count(*) from notice
+    </select>
+
+    <insert id="addNotices" parameterType="notice">
+        insert into notice(content) values(#{content})
+    </insert>
+
+    <delete id="deleteNotice" parameterType="int">
+        delete from notice where id=#{id}
+    </delete>
+
+</mapper>

ReplyDao.xml

@@ -0,0 +1,14 @@
+<?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.ReplyDao">
+    <delete id="del">
+        delete from reply where id=#{id}
+    </delete>
+
+
+    <select id="findAll" resultType="com.forum.entity.Reply">
+        select id,content,names ,create_time from reply
+    </select>
+</mapper>

TagDao.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.forum.dao.TagDao">
+
+
+    <select id="getTag" resultType="Tag">
+        select id,name from tag where id = #{id}
+    </select>
+
+    <insert id="saveTag" parameterType="Tag">
+        insert into tag values (#{id},#{name});
+    </insert>
+
+    <!--两个id可能会相冲，取别名即可-->
+    <resultMap id="tags" type="Tag">
+        <id property="id" column="tid"/>
+        <result property="name" column="name"/>
+        <collection property="forums" ofType="Forum">
+            <id property="id" column="bid"/>
+            <result property="title" column="title"/>
+        </collection>
+    </resultMap>
+
+    <select id="getAllTag" resultType="com.forum.entity.Tag">
+        select * from tag
+    </select>
+
+    <select id="getForumTag" resultMap="tags">
+        select t.id tid, t.name, b.id bid, b.title
+        from tag t, forum b, forum_tags bt
+        where t.id = bt.tag_id and b.id = bt.forum_id
+    </select>
+
+    <select id="getTagByName" resultType="Tag">
+        select * from tag where name = #{name}
+    </select>
+    <select id="getTagById" resultType="Tag">
+        select * from tag where id = #{id}
+    </select>
+    <select id="countTag" resultType="java.lang.Integer">
+        select count(*) from tag
+    </select>
+
+    <delete id="deleteTag">
+        delete from tag where id = #{id}
+    </delete>
+
+    <update id="updateTag" parameterType="Tag">
+        update tag set name = #{name} where id = #{id};
+    </update>
+
+</mapper>

UserDao.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.forum.dao.UserDao">
+    <update id="update">
+        update user set password=#{password} where username=#{username}
+    </update>
+
+    <select id="queryByUsernameAndPassword" resultType="com.forum.entity.User">
+        select * from user
+        where username = #{username} and password = #{password};
+    </select>
+
+    <insert id="addUser" parameterType="user">
+        insert into user(username,password,email,create_time,update_time,type,school,avatar)
+        values(#{username},#{password},#{email},#{createTime},#{updateTime},#{type},#{school},#{avatar})
+    </insert>
+    <select id="getAllUser" resultType="com.forum.entity.User">
+        select id,username,password,email,create_time,type from user
+    </select>
+    <delete id="deleteUser" >
+        delete from user where id = #{id}
+    </delete>
+    <select id="count" resultType="Integer" >
+        select count(*) from user where type = 0
+    </select>
+</mapper>