diff --git a/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/impl/CommentServiceImpl.java b/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/impl/CommentServiceImpl.java
index d5cad06..d7f1048 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/impl/CommentServiceImpl.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/jarvis/service/impl/CommentServiceImpl.java
@@ -131,9 +131,9 @@ public class CommentServiceImpl implements ICommentService {
             }
             
             if (statMap != null) {
-                stats.setTotalCount(((Number) statMap.get("totalCount")).longValue());
-                stats.setAvailableCount(((Number) statMap.get("availableCount")).longValue());
-                stats.setUsedCount(((Number) statMap.get("usedCount")).longValue());
+                stats.setTotalCount(toLong(statMap.get("totalCount")));
+                stats.setAvailableCount(toLong(statMap.get("availableCount")));
+                stats.setUsedCount(toLong(statMap.get("usedCount")));
                 // 设置最后一条评论的创建时间
                 Object lastUpdateTime = statMap.get("lastCommentUpdateTime");
                 if (lastUpdateTime != null) {
@@ -439,5 +439,22 @@ public class CommentServiceImpl implements ICommentService {
 
         return statistics;
     }
+
+    /**
+     * 将 Map 中的统计值安全转为 long，null 或不存在时返回 0
+     */
+    private static long toLong(Object value) {
+        if (value == null) {
+            return 0L;
+        }
+        if (value instanceof Number) {
+            return ((Number) value).longValue();
+        }
+        try {
+            return Long.parseLong(value.toString());
+        } catch (NumberFormatException e) {
+            return 0L;
+        }
+    }
 }