评论功能

pom.xml

@@ -19,6 +19,13 @@
             <artifactId>spring-boot-starter</artifactId>
         </dependency>
 
+
+        <dependency>
+            <groupId>org.mybatis</groupId>
+            <artifactId>mybatis</artifactId>
+            <version>3.5.10</version>
+        </dependency>
+
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
@@ -123,8 +130,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.8.1</version>
                 <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
+                    <source>9</source>
+                    <target>9</target>
                     <encoding>UTF-8</encoding>
                 </configuration>
             </plugin>

src/main/java/com/bao/dating/common/Comments.java

@@ -0,0 +1,19 @@
+package com.bao.dating.common;
+
+
+import lombok.Data;
+
+import java.time.LocalDateTime;
+
+
+/**
+ * 评论表
+ */
+@Data
+public class Comments {
+    private Long comment_id;   // 评论ID
+    private String content;  // 评论内容
+    private Long user_id;     // 评论人ID
+    private Long post_id;  // 关联动态ID
+    private LocalDateTime created_at; // 评论时间
+}

src/main/java/com/bao/dating/common/Post.java

@@ -0,0 +1,16 @@
+package com.bao.dating.common;
+
+
+import lombok.Data;
+
+import java.time.LocalDateTime;
+/**
+ * 动态表
+ */
+@Data
+public class Post {
+    private Long post_id;         // 动态ID
+    private String content;  // 动态内容
+    private Long user_id;     // 发布人ID
+    private LocalDateTime created_at; // 创建时间
+}

src/main/java/com/bao/dating/controller/CommentController.java

@@ -0,0 +1,48 @@
+package com.bao.dating.controller;
+
+
+import com.bao.dating.common.Comments;
+import com.bao.dating.service.CommentsService;
+import org.springframework.web.bind.annotation.*;
+
+import javax.annotation.Resource;
+import java.util.List;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/comments")
+@CrossOrigin  // 解决跨域问题（前后端分离必加）
+public class CommentController {
+    @Resource
+    private CommentsService commentsService;
+
+    /**
+     * 添加评论
+     * @param comment 评论对象（含content、userId、dynamicId）
+     */
+    @PostMapping("/add")
+    public Map<String, Object> addComment(@RequestBody Comments comment) {
+        boolean success = commentsService.addComment(comment);
+        return success ? Map.of("code", 200, "msg", "评论成功") : Map.of("code", 500, "msg", "评论失败");
+    }
+
+    /**
+     * 删除评论
+     * @param user_id 评论ID
+     */
+    @DeleteMapping("/delete/{user_id}")
+    public Map<String, Object> deleteComment(@PathVariable Long user_id) {
+        boolean success = commentsService.deleteComment(user_id);
+        return success ? Map.of("code", 200, "msg", "删除成功") : Map.of("code", 500, "msg", "删除失败");
+    }
+
+    /**
+     * 根据动态ID查询评论列表
+     * @param post_id 动态ID
+     */
+    @GetMapping("/list/{post_id}")
+    public Map<String, Object> getCommentList(@PathVariable Long post_id) {
+        List<Comments> commentList = commentsService.getCommentByPostId(post_id);
+        return Map.of("code", 200, "data", commentList);
+    }
+}

src/main/java/com/bao/dating/controller/PostController.java

@@ -20,7 +20,7 @@ public class PostController {
     private PostService postService;
 
     /**
-     * 上传媒体文件接口 like
+     * 上传媒体文件接口
      * @param files 媒体文件数组
      * @return 上传后的文件URL列表
      */

src/main/java/com/bao/dating/controller/PostFavoriteController.java

@@ -1,34 +0,0 @@
-package com.bao.dating.controller;
-
-import com.bao.dating.common.Result;
-import com.bao.dating.common.ResultCode;
-import com.bao.dating.pojo.entity.User;
-import com.bao.dating.service.PostFavoriteService;
-import com.bao.dating.service.PostService;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.web.bind.annotation.*;
-
-import java.util.Map;
-
-@RestController
-@RequestMapping("/posts")
-public class PostFavoriteController {
-    @Autowired
-    private PostFavoriteService postFavoriteService;
-    @PostMapping("/{post_id}/favorites")
-    public Result<Map<String,Long>> addPostFavorite(@PathVariable("post_id")Long postId, User user){
-        if (user == null){
-            return Result.error(ResultCode.PARAM_ERROR);
-        }
-        Long userId = user.getUserId();
-        return postFavoriteService.postFavorite(userId,postId);
-    }
-    @DeleteMapping("/{post_id}/favorites")
-    public Result<?> deletePostFavorite(@PathVariable("post_id")Long postId, User user){
-        if (user == null){
-            return Result.error(ResultCode.PARAM_ERROR);
-        }
-        Long userId = user.getUserId();
-        return postFavoriteService.deletePostFavorite(userId, postId);
-    }
-}

src/main/java/com/bao/dating/controller/text.java

@@ -1,4 +0,0 @@
-package com.bao.dating.controller;
-
-public class text {
-}

src/main/java/com/bao/dating/mapper/CommentsMapper.java

@@ -0,0 +1,22 @@
+package com.bao.dating.mapper;
+
+
+import com.bao.dating.common.Comments;
+import com.bao.dating.common.Post;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+public interface CommentsMapper {
+    // 添加评论
+    @Insert("INSERT INTO comments(content, user_id, post_id, created_at) VALUES(#{content}, #{user_id}, #{post_id}, #{created_at})")
+    int addComment(Comments comments);
+
+    // 删除评论
+    @Delete("DELETE FROM comments WHERE user_id = #{user_id}")
+    int deleteComments(@Param("user_id") Long user_id);
+
+    // 根据动态ID查询评论列表
+    @Select("SELECT * FROM comments WHERE post_id = #{post_id} ORDER BY created_at DESC")
+    List<Comments> getCommentsByPostId(@Param("post_id") Long post_id);
+}

src/main/java/com/bao/dating/mapper/PostFavoriteMapper.java

@@ -1,15 +0,0 @@
-package com.bao.dating.mapper;
-
-import com.bao.dating.pojo.entity.PostFavorite;
-import org.apache.ibatis.annotations.Mapper;
-import org.apache.ibatis.annotations.Param;
-
-import java.util.List;
-
-@Mapper
-public interface PostFavoriteMapper {
-    //查询当前已收藏所有用户
-    List<Long> selectUserIDByPostID(@Param("postId") Long postId);
-    int addPostFavorite(PostFavorite postFavorite);
-    int deletePostFavorite(@Param("postId") Long postId);
-}

src/main/java/com/bao/dating/mapper/PostMapper.java

@@ -2,7 +2,6 @@ package com.bao.dating.mapper;
 
 import com.bao.dating.pojo.entity.Post;
 import org.apache.ibatis.annotations.Mapper;
-import org.apache.ibatis.annotations.Param;
 
 @Mapper
 public interface PostMapper {
@@ -45,34 +44,4 @@ public interface PostMapper {
      * @return 影响行数
      */
     int decreaseLikeCount(Long postId);
-
-    /**
-     * 查询当前动态属于哪个用户id
-     * @param postId 动态id
-     * @return 用户id
-     */
-    Long selectUserIdByPostId(@Param("post_id") Long postId);
-
-    /**
-     * 查询点赞数
-     *
-     * @param postId
-     * @return
-     */
-    int selectFavoriteCount(Long postId);
-
-    /**
-     * 收藏数+1
-     *
-     * @param postId 动态ID
-     * @return 影响行数
-     */
-    int increaseFavoriteCount(Long postId);
-    /**
-     * 收藏数-1
-     *
-     * @param postId 动态ID
-     * @return 影响行数
-     */
-    int decreaseFavoriteCount(Long postId);
 }

src/main/java/com/bao/dating/service/CommentsService.java

@@ -0,0 +1,20 @@
+package com.bao.dating.service;
+
+
+import com.bao.dating.common.Comments;
+
+import java.util.List;
+
+public interface CommentsService{
+    // 添加评论
+    boolean addComment(Comments comments);
+
+    // 删除评论
+    boolean deleteComment(Long user_id);
+
+    // 根据动态ID查询评论
+    List<Comments> getCommentByPostId(Long post_id);
+
+
+
+}

src/main/java/com/bao/dating/service/PostFavoriteService.java

@@ -1,10 +0,0 @@
-package com.bao.dating.service;
-
-import com.bao.dating.common.Result;
-
-import java.util.Map;
-
-public interface PostFavoriteService {
-    Result<Map<String,Long>> postFavorite(Long userid,Long postId);
-    Result<?> deletePostFavorite(Long userid,Long postId);
-}

src/main/java/com/bao/dating/service/PostService.java

@@ -27,11 +27,4 @@ public interface PostService {
      * @return 删除的动态对象
      */
     void deletePostById(Integer postId);
-
-    /**
-     * 查询
-     * @param postId 动态id
-     * @return 用户id
-     */
-    Long selectUserIdByPostId(Long postId);
 }

src/main/java/com/bao/dating/service/impl/CommentsServiceImpl.java

@@ -0,0 +1,39 @@
+package com.bao.dating.service.impl;
+
+import com.bao.dating.common.Comments;
+
+import com.bao.dating.mapper.CommentsMapper;
+
+
+import com.bao.dating.service.CommentsService;
+import org.springframework.stereotype.Service;
+
+
+import javax.annotation.Resource;
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Service
+public class CommentsServiceImpl implements CommentsService {
+
+
+
+    @Resource
+    private CommentsMapper commentsMapper;
+
+    @Override
+    public boolean addComment(Comments comments) {
+        // 设置创建时间
+        comments.setCreated_at(LocalDateTime.now());
+        return commentsMapper.addComment(comments) > 0;
+    }
+    @Override
+    public boolean deleteComment(Long user_id) {
+        return commentsMapper.deleteComments(user_id) > 0;
+    }
+
+    @Override
+    public List<Comments> getCommentByPostId(Long post_id) {
+        return commentsMapper.getCommentsByPostId(post_id);
+    }
+}

src/main/java/com/bao/dating/service/impl/PostFavoriteServiceImpl.java

@@ -1,61 +0,0 @@
-package com.bao.dating.service.impl;
-
-import com.bao.dating.common.Result;
-import com.bao.dating.common.ResultCode;
-import com.bao.dating.mapper.PostFavoriteMapper;
-import com.bao.dating.mapper.PostMapper;
-import com.bao.dating.pojo.entity.PostFavorite;
-import com.bao.dating.service.PostFavoriteService;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
-
-import java.time.LocalDateTime;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-@Service
-public class PostFavoriteServiceImpl implements PostFavoriteService {
-    @Autowired
-    private PostFavoriteMapper postFavoriteMapper;
-    @Autowired
-    private PostMapper postMapper;
-    @Override
-    @Transactional
-    public Result<Map<String, Long>> postFavorite(Long userid, Long postId) {
-        Long userId = postMapper.selectUserIdByPostId(postId);
-        if (userid.equals(userId)){
-            return Result.error(ResultCode.FORBIDDEN,"无法收藏自己发布动态");
-        }
-        List<Long> allUserId = postFavoriteMapper.selectUserIDByPostID(postId);
-        if (allUserId.contains(userid)){
-            return Result.error(ResultCode.FORBIDDEN,"已收藏");
-        }
-        PostFavorite postFavorite = new PostFavorite();
-        postFavorite.setPostId(postId);
-        postFavorite.setUserId(userid);
-        postFavorite.setCreatedAt(LocalDateTime.now());
-        postFavoriteMapper.addPostFavorite(postFavorite);
-        postMapper.increaseFavoriteCount(postId);
-        Long count = (long) postMapper.selectFavoriteCount(postId);
-        Map<String, Long> data = new HashMap<>();
-        data.put("favorite_id",postFavorite.getFavoriteId());
-        data.put("post_id",postId);
-        data.put("user_id",userid);
-        data.put("current_favorites_count",count);
-        return Result.success(ResultCode.SUCCESS_REVIEW,"收藏成功",data);
-    }
-
-    @Override
-    @Transactional
-    public Result<?> deletePostFavorite(Long userid, Long postId) {
-        List<Long> allUserId = postFavoriteMapper.selectUserIDByPostID(postId);
-        if (! allUserId.contains(userid)){
-            return Result.error(ResultCode.FORBIDDEN,"请先收藏");
-        }
-        postFavoriteMapper.deletePostFavorite(postId);
-        postMapper.decreaseFavoriteCount(postId);
-        return null;
-    }
-}

src/main/java/com/bao/dating/service/impl/PostServiceImpl.java

@@ -147,15 +147,4 @@ public class PostServiceImpl implements PostService {
     public void deletePostById(Integer postId) {
         postMapper.deletePostById(postId);
     }
-
-    /**
-     * 查询用户id
-     * @param postId 动态id
-     * @return
-     */
-
-    @Override
-    public Long selectUserIdByPostId(Long postId) {
-        return postMapper.selectUserIdByPostId(postId);
-    }
 }

src/main/resources/com/bao/dating/mapper/PostFavoriteMapper.xml

@@ -1,17 +0,0 @@
-<?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.bao.dating.mapper.PostFavoriteMapper">
-    <!--添加动态收藏-->
-    <insert id="addPostFavorite">
-        insert into post_favorite values (null,#{userId},#{postId},#{createdAt})
-    </insert>
-    <!--删除动态收藏-->
-    <delete id="deletePostFavorite">
-        delete from post_favorite where post_id = #{postId}
-    </delete>
-    <!--查询当前已收藏所有用户-->
-    <select id="selectUserIDByPostID" resultType="java.lang.Long">
-        SELECT user_id FROM post_favorite WHERE post_id = #{postId}
-    </select>
-</mapper>

src/main/resources/com/bao/dating/mapper/PostMapper.xml

@@ -42,26 +42,10 @@
     <update id="decreaseLikeCount">
         update dating.post set like_count= like_count - 1 where post.post_id = #{postId}
     </update>
-    <!--增加收藏数量-->
-    <update id="increaseFavoriteCount">
-        update post set favorite_count = favorite_count + 1 where post_id = #{post_id}
-    </update>
-    <!--减少收藏数量-->
-    <update id="decreaseFavoriteCount">
-        update post set favorite_count = favorite_count - 1 where post_id = #{post_id}
-    </update>
 
     <!--查询点赞当前数量-->
     <select id="selectLikeCount" resultType="java.lang.Integer">
         select dating.post.like_count from dating.post where post.post_id = #{postId}
     </select>
-    <!--查询当前动态的用户id-->
-    <select id="selectUserIdByPostId" resultType="java.lang.Long">
-        SELECT user_id FROM post WHERE post_id = #{post_id}
-    </select>
-    <!--查询当前收藏数量-->
-    <select id="selectFavoriteCount" resultType="java.lang.Integer">
-        select dating.post.favorite_count from dating.post where post.post_id = #{postId}
-    </select>
 
 </mapper>