fix: 修复 VLM 解析

src/chat/emoji_system/emoji_manager.py

@@ -1023,6 +1023,15 @@ class EmojiManager:
     -   必须是表情包，非普通截图。
     -   图中文字不超过5个。
 请确保你的最终输出是严格的JSON对象，不要添加任何额外解释或文本。
+输出格式:
+```json
+{{
+  "detailed_description": "",
+  "keywords": [],
+  "refined_sentence": "",
+  "is_compliant": true
+}}
+```
 """
 
                 image_data_for_vlm, image_format_for_vlm = image_base64, image_format
@@ -1042,9 +1051,7 @@ class EmojiManager:
                         if not vlm_response_str:
                             continue
 
-                        match = re.search(r"\{.*\}", vlm_response_str, re.DOTALL)
+                        vlm_response_json = self._parse_json_response(vlm_response_str)
-                        if match:
-                            vlm_response_json = json.loads(match.group(0))
                         description = vlm_response_json.get("detailed_description", "")
                         emotions = vlm_response_json.get("keywords", [])
                         refined_description = vlm_response_json.get("refined_sentence", "")
@@ -1196,6 +1203,29 @@ class EmojiManager:
                     logger.error(f"[错误] 删除异常处理文件时出错: {remove_error}")
             return False
 
+    @classmethod
+    def _parse_json_response(cls, response: str) -> dict[str, Any] | None:
+        """解析 LLM 的 JSON 响应"""
+        try:
+            # 尝试提取 JSON 代码块
+            json_match = re.search(r"```json\s*(.*?)\s*```", response, re.DOTALL)
+            if json_match:
+                json_str = json_match.group(1)
+            else:
+                # 尝试直接解析
+                json_str = response.strip()
+
+            # 移除可能的注释
+            json_str = re.sub(r"//.*", "", json_str)
+            json_str = re.sub(r"/\*.*?\*/", "", json_str, flags=re.DOTALL)
+
+            data = json.loads(json_str)
+            return data
+
+        except json.JSONDecodeError as e:
+            logger.warning(f"JSON 解析失败: {e}, 响应: {response[:200]}")
+            return None
+
 
 emoji_manager = None