diff --git a/pom.xml b/pom.xml
index c99e6b2..f004316 100644
--- a/pom.xml
+++ b/pom.xml
@@ -118,17 +118,17 @@
         </dependency>
 
         <!--    修改后的jjwt -->
-        <dependency>
+       <!-- <dependency>
             <groupId>jsonwebtoken</groupId>
             <artifactId>habook-jjwt</artifactId>
             <version>0.0.1</version>
-        </dependency>
+        </dependency>-->
 
-      <!--<dependency>
+      <dependency>
             <groupId>io.jsonwebtoken</groupId>
             <artifactId>jjwt</artifactId>
             <version>0.9.1</version>
-        </dependency>-->
+        </dependency>
 
         <dependency>
             <groupId>org.springframework.boot</groupId>
diff --git a/src/main/java/cn/teammodel/controller/admin/service/impl/CommonServiceImpl.java b/src/main/java/cn/teammodel/controller/admin/service/impl/CommonServiceImpl.java
index 7a8451b..210f737 100644
--- a/src/main/java/cn/teammodel/controller/admin/service/impl/CommonServiceImpl.java
+++ b/src/main/java/cn/teammodel/controller/admin/service/impl/CommonServiceImpl.java
@@ -112,7 +112,7 @@ public class CommonServiceImpl implements CommonService {
     @Override
     public Comment saveOrUpdateComment(Comment comment) {
 
-        List<Comment> comments = commentRepository.findById(comment.getId(),comment.getSchool(),comment.getActivityType());
+        List<Comment> comments = commentRepository.findById(comment.getId(),comment.getSchool(),comment.getActivityType(),comment.getCode());
         Comment existingComment = comments.stream().findFirst().orElse(null);
         if (existingComment != null) {
             // 如果评论对象存在，则进行更新操作
@@ -125,7 +125,11 @@ public class CommonServiceImpl implements CommonService {
             return commentRepository.save(existingComment);
         } else {
             // 如果评论对象不存在，则创建新的记录
-            comment.setCode("Comment-"+ comment.getSchool());
+            String formattedString = String.format("Comment-%s-%s-%s",
+                    comment.getSchool(),
+                    comment.getYear(),
+                    comment.getSemester());
+            comment.setCode(formattedString);
             comment.setCreateTime(Instant.now().toEpochMilli());
             return commentRepository.save(comment);
         }
@@ -141,6 +145,6 @@ public class CommonServiceImpl implements CommonService {
 
     @Override
     public List<Comment> getCommentById(Comment comment) {
-        return commentRepository.findById(comment.getId(),comment.getSchool(),comment.getActivityType());
+        return commentRepository.findById(comment.getId(),comment.getSchool(),comment.getActivityType(),comment.getCode());
     }
 }
diff --git a/src/main/java/cn/teammodel/controller/admin/service/impl/ExamServiceImpl.java b/src/main/java/cn/teammodel/controller/admin/service/impl/ExamServiceImpl.java
index 8bad3eb..f7b80d8 100644
--- a/src/main/java/cn/teammodel/controller/admin/service/impl/ExamServiceImpl.java
+++ b/src/main/java/cn/teammodel/controller/admin/service/impl/ExamServiceImpl.java
@@ -3,14 +3,9 @@ package cn.teammodel.controller.admin.service.impl;
 import cn.teammodel.common.ErrorCode;
 import cn.teammodel.config.exception.ServiceException;
 import cn.teammodel.controller.admin.service.ExamService;
-import cn.teammodel.model.dto.admin.common.RGroupList;
 import cn.teammodel.model.dto.admin.exam.OverViewDto;
-import cn.teammodel.model.entity.common.Exam;
 import cn.teammodel.repository.ExamRepository;
 import cn.teammodel.utils.GroupUtil;
-import cn.teammodel.utils.SnowflakeIdGenerator;
-import com.alibaba.fastjson.JSON;
-import com.alibaba.fastjson.TypeReference;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.env.Environment;
 import org.springframework.stereotype.Service;
diff --git a/src/main/java/cn/teammodel/model/entity/common/Comment.java b/src/main/java/cn/teammodel/model/entity/common/Comment.java
index d0acbc5..ffc3667 100644
--- a/src/main/java/cn/teammodel/model/entity/common/Comment.java
+++ b/src/main/java/cn/teammodel/model/entity/common/Comment.java
@@ -28,6 +28,10 @@ public class Comment extends BaseItem {
     private int ttl = -1;
     private Long createTime;
     private Long updateTime;
+    @ApiModelProperty("学年")
+    private int year;
+    @ApiModelProperty("当前学年所处第几学期")
+    private int semester;
     @Data
     public static class ContentInfo {
         @ApiModelProperty("评论内容")
diff --git a/src/main/java/cn/teammodel/repository/CommentRepository.java b/src/main/java/cn/teammodel/repository/CommentRepository.java
index cddfcf4..9087efa 100644
--- a/src/main/java/cn/teammodel/repository/CommentRepository.java
+++ b/src/main/java/cn/teammodel/repository/CommentRepository.java
@@ -13,7 +13,7 @@ import java.util.List;
 
 @Repository
 public interface CommentRepository extends CosmosRepository<Comment, String> {
-    @Query("select * from Comment as s where s.id = @id and s.pk = 'Comment' and s.school = @school and s.activityType = @activityType ")
-    List<Comment> findById(@Param("id") String id, @Param("school") String school,@Param("activityType") String activityType);
+    @Query("select * from Comment as s where s.id = @id and s.pk = 'Comment' and s.school = @school and s.activityType = @activityType and s.code = @code ")
+    List<Comment> findById(@Param("id") String id, @Param("school") String school,@Param("activityType") String activityType,@Param("code") String code);
 
 }
diff --git a/src/main/java/cn/teammodel/service/impl/ChatMessageServiceImpl.java b/src/main/java/cn/teammodel/service/impl/ChatMessageServiceImpl.java
index ba721a0..66505e6 100644
--- a/src/main/java/cn/teammodel/service/impl/ChatMessageServiceImpl.java
+++ b/src/main/java/cn/teammodel/service/impl/ChatMessageServiceImpl.java
@@ -97,9 +97,10 @@ public class ChatMessageServiceImpl implements ChatMessageService {
             }
             return sseEmitter;
         } catch (Exception e) {
-            log.info(e.getStackTrace().toString());
-            throw new ServiceException(ErrorCode.OPERATION_ERROR.getCode(), e.getStackTrace().toString());
+            log.error(e.getMessage()+ e.getStackTrace().toString());
+           throw new ServiceException(ErrorCode.OPERATION_ERROR.getCode(), e.getMessage()+ e.getStackTrace().toString());
         }
+       
     }
 
     /**