diff --git a/src/main/java/com/bao/dating/mapper/PostLikeMapper.java b/src/main/java/com/bao/dating/mapper/PostLikeMapper.java
index 2de398e..41783e4 100644
--- a/src/main/java/com/bao/dating/mapper/PostLikeMapper.java
+++ b/src/main/java/com/bao/dating/mapper/PostLikeMapper.java
@@ -6,11 +6,29 @@ import org.apache.ibatis.annotations.Param;
 
 @Mapper
 public interface PostLikeMapper {
-    //根据 postId 和 userId 查询点赞记录 用于判断是否已经点赞
+    /**
+     * 根据 postId 和 userId 查询点赞记录 用于判断是否已经点赞
+     * @param postId
+     * @param userId
+     * @return
+     */
     PostLike findByPostAndUser(@Param("postId") Long postId, @Param("userId") Long userId);
 
+    /**
+     * 插入点赞记录
+     *
+     * @param postLike
+     * @return
+     */
     int insert(PostLike postLike);
 
-    // 根据 postId + userId 删除点赞
+    /**
+     * 删除点赞记录
+     * 根据 postId + userId 删除点赞
+     *
+     * @param postId
+     * @param userId
+     * @return
+     */
     int deleteByPostIdAndUserId(@Param("postId") Long postId, @Param("userId") Long userId);
 }
diff --git a/src/main/java/com/bao/dating/mapper/PostMapper.java b/src/main/java/com/bao/dating/mapper/PostMapper.java
index 8d78c84..b3ba80c 100644
--- a/src/main/java/com/bao/dating/mapper/PostMapper.java
+++ b/src/main/java/com/bao/dating/mapper/PostMapper.java
@@ -5,13 +5,44 @@ import org.apache.ibatis.annotations.Mapper;
 
 @Mapper
 public interface PostMapper {
+    /**
+     * 插入动态
+     *
+     * @param post 动态对象
+     * @return 插入的行数
+     */
     int insert(Post post);
 
-    int increaseLikeCount(Long postId);
+    /**
+     * 根据ID删除动态
+     *
+     * @param postId 动态ID
+     * @return 删除的行数
+     */
+    int deletePostById(Integer postId);
 
+    /***
+     * 查询点赞数
+     *
+     * @param postId
+     * @return
+     */
     int selectLikeCount(Long postId);
 
-    int decreaseLikeCount(Long postId);
 
-    int deletePostById(Integer postId);
+    /**
+     * 点赞数+1
+     *
+     * @param postId 动态ID
+     * @return 影响行数
+     */
+    int increaseLikeCount(Long postId);
+
+    /**
+     * 点赞数-1
+     *
+     * @param postId 动态ID
+     * @return 影响行数
+     */
+    int decreaseLikeCount(Long postId);
 }
diff --git a/src/main/java/com/bao/dating/pojo/dto/PostRequestDTO.java b/src/main/java/com/bao/dating/pojo/dto/PostRequestDTO.java
index 5f7eeab..fde914d 100644
--- a/src/main/java/com/bao/dating/pojo/dto/PostRequestDTO.java
+++ b/src/main/java/com/bao/dating/pojo/dto/PostRequestDTO.java
@@ -7,7 +7,7 @@ import java.util.List;
 
 @Data
 public class PostRequestDTO {
-    private Integer userId;
+    private Long userId;
     private String content;
     private List<String> tags;
     private List<String> mediaUrls;
diff --git a/src/main/java/com/bao/dating/service/PostLikeService.java b/src/main/java/com/bao/dating/service/PostLikeService.java
index 0434e7e..ba705c0 100644
--- a/src/main/java/com/bao/dating/service/PostLikeService.java
+++ b/src/main/java/com/bao/dating/service/PostLikeService.java
@@ -11,6 +11,12 @@ public interface PostLikeService {
      * @return 统一返回结果
      */
     Result<?> likePost(Long postId, Long userId);
-    //取消点赞
+
+    /**
+     * 取消点赞指定的 post
+     *
+     * @param postId 帖子ID
+     * @param userId 用户ID
+     */
     void unlike(Long postId, Long userId);
 }
diff --git a/src/main/java/com/bao/dating/service/impl/PostLikeServiceImpl.java b/src/main/java/com/bao/dating/service/impl/PostLikeServiceImpl.java
index b1564f2..ee43274 100644
--- a/src/main/java/com/bao/dating/service/impl/PostLikeServiceImpl.java
+++ b/src/main/java/com/bao/dating/service/impl/PostLikeServiceImpl.java
@@ -24,6 +24,13 @@ public class PostLikeServiceImpl implements PostLikeService {
 
 
 
+    /**
+     * 点赞指定的 post
+     *
+     * @param postId 帖子ID
+     * @param userId 用户ID
+     * @return 统一返回结果
+     */
     @Override
     @Transactional // 保证点赞 + 点赞数更新是一个事务
     public Result<?> likePost(Long postId, Long userId) {
@@ -51,6 +58,12 @@ public class PostLikeServiceImpl implements PostLikeService {
         return Result.success(ResultCode.SUCCESS_REVIEW,"点赞成功",data);
     }
 
+    /**
+     * 取消点赞指定的 post
+     *
+     * @param postId 帖子ID
+     * @param userId 用户ID
+     */
     @Override
     @Transactional
     public void unlike(Long postId, Long userId) {
diff --git a/src/main/resources/com/bao/dating/mapper/PostMapper.xml b/src/main/resources/com/bao/dating/mapper/PostMapper.xml
index 577ae03..fcb9c1d 100644
--- a/src/main/resources/com/bao/dating/mapper/PostMapper.xml
+++ b/src/main/resources/com/bao/dating/mapper/PostMapper.xml
@@ -3,7 +3,8 @@
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 
 <mapper namespace="com.bao.dating.mapper.PostMapper">
-    <!--  动态添加  -->
+
+    <!--动态添加-->
     <insert id="insert" useGeneratedKeys="true" keyProperty="postId">
         INSERT INTO post
         (user_id, content,
@@ -26,10 +27,18 @@
         </if>
          #{isPublic}, 0, 0, #{createdAt}, #{updatedAt})
     </insert>
+
+    <!--动态删除-->
+    <delete id="deletePostById" parameterType="int">
+        DELETE FROM post WHERE post_id = #{postId}
+    </delete>
+
     <!--增加点赞数量-->
     <update id="increaseLikeCount">
         update dating.post set like_count = like_count + 1 where post.post_id = #{postId}
     </update>
+
+    <!--减少点赞数量-->
     <update id="decreaseLikeCount">
         update dating.post set like_count= like_count - 1 where post.post_id = #{postId}
     </update>
@@ -39,8 +48,4 @@
         select dating.post.like_count from dating.post where post.post_id = #{postId}
     </select>
 
-    <delete id="deletePostById" parameterType="int">
-        DELETE FROM post WHERE post_id = #{postId}
-    </delete>
-
 </mapper>
\ No newline at end of file