refactor(service): 优化代码结构和导入

- 移除了未使用的导入语句
- 删除了不必要的变量和注释
-简化了一些代码逻辑

src/main/java/com/example/copykamanotes/service/impl/CommentServiceImpl.java

@@ -14,7 +14,6 @@ import com.example.copykamanotes.model.entity.Comment;
 import com.example.copykamanotes.model.entity.Note;
 import com.example.copykamanotes.model.entity.User;
 import com.example.copykamanotes.model.vo.comment.CommentVO;
-import com.example.copykamanotes.model.vo.note.NoteVO;
 import com.example.copykamanotes.model.vo.user.UserActionVO;
 import com.example.copykamanotes.scope.RequestScopeData;
 import com.example.copykamanotes.service.CommentService;
@@ -26,9 +25,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.time.LocalDateTime;
-import java.util.Date;
 import java.util.List;
-import java.util.stream.Collectors;
 
 @Slf4j
 @Service
@@ -217,8 +214,6 @@ public class CommentServiceImpl implements CommentService {
     @NeedLogin
     @Transactional
     public ApiResponse<EmptyVO> unlikeComment(Integer commentId) {
-        Long userId= requestScopeData.getUserId();
-
         Comment comment = commentMapper.findById(commentId);
         if (comment == null) {
             return ApiResponse.error(HttpStatus.NOT_FOUND.value(), "评论不存在");

src/main/java/com/example/copykamanotes/service/impl/NoteLikeServiceImpl.java

@@ -1,7 +1,6 @@
 package com.example.copykamanotes.service.impl;
 
 import com.example.copykamanotes.annotation.NeedLogin;
-import com.example.copykamanotes.mapper.MessageMapper;
 import com.example.copykamanotes.mapper.NoteLikeMapper;
 import com.example.copykamanotes.mapper.NoteMapper;
 import com.example.copykamanotes.model.base.ApiResponse;
@@ -13,7 +12,6 @@ import com.example.copykamanotes.service.MessageService;
 import com.example.copykamanotes.service.NoteLikeService;
 import com.example.copykamanotes.utils.ApiResponseUtils;
 import lombok.RequiredArgsConstructor;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 

src/main/java/com/example/copykamanotes/service/impl/NoteServiceImpl.java

@@ -17,10 +17,8 @@ import com.example.copykamanotes.service.*;
 import com.example.copykamanotes.utils.ApiResponseUtils;
 import com.example.copykamanotes.utils.MarkdownUtils;
 import com.example.copykamanotes.utils.PaginationUtils;
-import com.google.protobuf.Api;
 import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.data.relational.core.sql.In;
 import org.springframework.stereotype.Service;
 
 import java.util.*;