收藏取消收藏接口

backend/src/main/java/com/nav/controller/PostController.java

@@ -61,4 +61,8 @@ public class PostController {
         return postService.getLifePostByTag(tag);
     }
 
+    @GetMapping("/post/CollectionCount/{userId}/{postId}")
+    public CommonResult updateCollectionCountById(@PathVariable long userId,@PathVariable long postId) {
+        return postService.updateCollectionCountById(userId,postId);
+    }
 }

backend/src/main/java/com/nav/dao/PostDao.java

@@ -5,6 +5,7 @@ import com.nav.vo.result.LifePostResult;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 
+import java.util.Date;
 import java.util.List;
 
 /**
@@ -42,7 +43,7 @@ public interface PostDao {
      * @param postId：文章id
      * @return:int ：点赞数
     **/
-    public int updateLikeCountById(@Param("userId") long userId, @Param("postId") long postId);
+    public int updateLikeCountById(@Param("userId") long userId, @Param("postId") long postId,@Param("createTime") Date createTime,@Param("modifiedTime")Date modifiedTime);
 
     /**
      * 方法说明：根据文章id更新浏览量
@@ -90,4 +91,35 @@ public interface PostDao {
      * @return:int ：点赞数
      **/
     public int updateDownLikeCountById(@Param("userId") long userId, @Param("postId") long postId);
+
+    /**
+     * 方法说明：根据用户id和文章id查找该用户是否收藏过
+     * @author zyx
+     * @date 2022/5/1 11:32
+     * @param userId：用户id
+     * @param postId：文章id
+     * @return:int ：1已收藏，0未收藏
+     **/
+    public int selectCollectionById(@Param("userId") long userId, @Param("postId") long postId);
+
+    /**
+     * 方法说明:根据用户id和文章id增加收藏数
+     * @author zyx
+     * @date 2022/5/1 11:35
+     * @param userId：用户id
+     * @param postId：文章id
+     * @return:int ：收藏数
+     **/
+    public int updateCollectionCountById(@Param("userId") long userId, @Param("postId") long postId,@Param("createTime") Date createTime,@Param("modifiedTime")Date modifiedTime);
+
+    /**
+     * 方法说明:根据用户id和文章id减少收藏数
+     * @author zyx
+     * @date 2022/5/1 11:37
+     * @param userId：用户id
+     * @param postId：文章id
+     * @return:int ：收藏数
+     **/
+    public int updateDownCollectionCountById(@Param("userId") long userId, @Param("postId") long postId);
+
 }

backend/src/main/java/com/nav/service/PostService.java

@@ -109,4 +109,14 @@ public interface PostService {
      * @return:com.nav.common.api.CommonResult
     **/
     public CommonResult updateLikeCount( long userId,long postId);
+
+    /**
+     * 方法说明:先判断用户是否收藏过，如果已收藏，则取消收藏，否则收藏数加一
+     * @author zyx
+     * @date 2022/5/1 11:42
+     * @param userId：用户id
+     * @param postId：文章id
+     * @return:com.nav.common.api.CommonResult
+     **/
+    public CommonResult updateCollectionCountById(long userId,long postId);
 }

backend/src/main/java/com/nav/service/PostServiceImpl.java

@@ -9,7 +9,10 @@ import com.nav.vo.result.LifePostResult;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import java.text.SimpleDateFormat;
+import java.util.Date;
 import java.util.List;
+import java.util.TimeZone;
 
 /**
  * 类说明
@@ -36,7 +39,7 @@ public class PostServiceImpl implements PostService{
 
     @Override
     public CommonResult updateLikeCountById(long userId,long postId) {
-        return CommonResult.success(postDao.updateLikeCountById(userId,postId),"请求成功");
+        return CommonResult.success(postDao.updateLikeCountById(userId,postId,new Date(),new Date()),"请求成功");
     }
 
     @Override
@@ -74,7 +77,7 @@ public class PostServiceImpl implements PostService{
     @Override
     public CommonResult updateLikeCount(long userId, long postId) {
         int isLike=getLikeById(userId,postId);
-        if(isLike==1){
+        if(isLike>=1){
             //取消点赞
             return updateDownLikeCountById(userId,postId);
         }
@@ -83,4 +86,17 @@ public class PostServiceImpl implements PostService{
             return updateLikeCountById(userId,postId);
         }
     }
+
+    @Override
+    public CommonResult updateCollectionCountById(long userId, long postId) {
+        int isCollect=postDao.selectCollectionById(userId,postId);
+        if(isCollect>=1){
+            //取消收藏
+            return CommonResult.success(postDao.updateDownCollectionCountById(userId,postId),"请求成功");
+        }
+        else{
+            //收藏
+            return CommonResult.success(postDao.updateCollectionCountById(userId,postId,new Date(),new Date()),"请求成功");
+        }
+    }
 }

backend/src/main/resources/application.yml

@@ -4,7 +4,7 @@ server:
 spring:
   datasource:
     driver-class-name: com.mysql.cj.jdbc.Driver
-    url: jdbc:mysql://47.95.151.202/nav?useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT&allowMultiQueries=true
+    url: jdbc:mysql://47.95.151.202/nav?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai&allowMultiQueries=true
     username: root
     password: Nav_123456
   servlet:

backend/src/main/resources/mapper/PostMapper.xml

@@ -25,7 +25,7 @@
         set like_count = like_count+1
         where id = #{postId};
 
-        insert into praise_list(user_id,post_id) values(#{userId},#{postId});
+        insert into praise_list(user_id,post_id,gmt_create,gmt_modified) values(#{userId},#{postId},#{createTime},#{modifiedTime});
 
         select like_count
         from post
@@ -82,4 +82,36 @@
         where post_id=#{postId} and user_id=#{userId};
     </select>
 
+    <select id="selectCollectionById" resultType="int">
+        select count(*)
+        from collection_list
+        where post_id=#{postId} and user_id=#{userId};
+    </select>
+
+    <!--收藏-->
+    <select id="updateCollectionCountById" resultType="int">
+        update post
+        set collection_count = collection_count+1
+        where id = #{postId};
+
+        insert into collection_list(user_id,post_id,gmt_create,gmt_modified) values(#{userId},#{postId},#{createTime},#{modifiedTime});
+
+        select collection_count
+        from post
+        where post.id = #{postId};
+    </select>
+
+    <!--取消收藏-->
+    <select id="updateDownCollectionCountById" resultType="int">
+        update post
+        set collection_count = collection_count-1
+        where id = #{postId};
+
+        delete from collection_list where post_id=#{postId} and user_id = #{userId};
+
+        select collection_count
+        from post
+        where post.id = #{postId};
+    </select>
+
 </mapper>
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