diff --git a/src/backend/app/api/command_parser.py b/src/backend/app/api/command_parser.py
index 071473e..a1e2a7b 100644
--- a/src/backend/app/api/command_parser.py
+++ b/src/backend/app/api/command_parser.py
@@ -19,7 +19,8 @@ class CommandParser:
         # 本地无法解析则调用AI服务
         return await self.ai_service.parse_command(command)
 
-    def _try_local_parse(self, command: str) -> Dict[str, Any]:
+    @staticmethod
+    def _try_local_parse(command: str) -> dict[str, str | list[Any]] | dict[str, str] | None:
         """
         尝试本地解析常见命令
         """
@@ -32,7 +33,7 @@ class CommandParser:
             if vlan_id:
                 return {
                     "type": "vlan",
-                    "vlan_id": int(vlan_id),
+                    "vlan_id": vlan_id,
                     "name": f"VLAN{vlan_id}",
                     "interfaces": []
                 }
@@ -62,7 +63,7 @@ class CommandParser:
                 if "vlan" in command:
                     vlan_id = next((p for p in parts if p.isdigit()), None)
                     if vlan_id:
-                        config["vlan"] = int(vlan_id)
+                        config["vlan"] = vlan_id
 
                 return config
 
diff --git a/src/backend/app/api/endpoints.py b/src/backend/app/api/endpoints.py
index 917bb2a..f812243 100644
--- a/src/backend/app/api/endpoints.py
+++ b/src/backend/app/api/endpoints.py
@@ -20,7 +20,7 @@ async def batch_apply_config(request: BatchConfigRequest):
     for ip in request.switch_ips:
         try:
             configurator = SwitchConfigurator()
-            results[ip] = await configurator.apply_config(ip, request.config)
+            results[ip] = await configurator.safe_apply(ip, request.config)
         except Exception as e:
             results[ip] = str(e)
     return {"results": results}
@@ -80,7 +80,7 @@ async def apply_config(request: ConfigRequest):
             password=settings.SWITCH_PASSWORD,
             timeout=settings.SWITCH_TIMEOUT
         )
-        result = await configurator.apply_config(request.switch_ip, request.config)
+        result = await configurator.safe_apply(request.switch_ip, request.config)
         return {"success": True, "result": result}
     except Exception as e:
         raise HTTPException(
diff --git a/src/backend/app/api/network_config.py b/src/backend/app/api/network_config.py
index c155400..54cce3b 100644
--- a/src/backend/app/api/network_config.py
+++ b/src/backend/app/api/network_config.py
@@ -64,7 +64,7 @@ class SwitchConfigurator:
         self.ensp_delay = ensp_command_delay
         self.ssh_options = ssh_options
 
-    async def _apply_config(self, ip: str, config: Union[Dict, SwitchConfig]) -> str:
+    async def apply_config(self, ip: str, config: Union[Dict, SwitchConfig]) -> str:
         """实际配置逻辑"""
         if isinstance(config, dict):
             config = SwitchConfig(**config)
@@ -127,6 +127,7 @@ class SwitchConfigurator:
 
             # 关闭连接
             writer.close()
+            # noinspection PyBroadException
             try:
                 await writer.wait_closed()
             except:
@@ -253,7 +254,7 @@ class SwitchConfigurator:
         """安全配置应用（自动回滚）"""
         backup_path = await self._backup_config(ip)
         try:
-            result = await self._apply_config(ip, config)
+            result = await self.apply_config(ip, config)
             if not await self._validate_config(ip, config):
                 raise SwitchConfigException("配置验证失败")
             return {
diff --git a/src/backend/app/utils/exceptions.py b/src/backend/app/utils/exceptions.py
index ccbd2de..6183d50 100644
--- a/src/backend/app/utils/exceptions.py
+++ b/src/backend/app/utils/exceptions.py
@@ -1,5 +1,4 @@
 from fastapi import HTTPException, status
-from typing import Optional
 
 class AICommandParseException(HTTPException):
     def __init__(self, detail: str):
@@ -23,9 +22,10 @@ class ConfigBackupException(SwitchConfigException):
     """配置备份失败异常"""
     def __init__(self, ip: str):
         super().__init__(
-            detail=f"无法备份设备 {ip} 的配置",
-            recovery_guide="检查设备存储空间或权限"
+            detail=f"无法备份设备 {ip} 的配置"
         )
+        # 将恢复指南作为实例属性
+        self.recovery_guide = "检查设备存储空间或权限"
 
 class ConfigRollbackException(SwitchConfigException):
     """回滚失败异常"""
@@ -34,3 +34,10 @@ class ConfigRollbackException(SwitchConfigException):
             detail=f"设备 {ip} 回滚失败（原始错误：{original_error}）",
             status_code=status.HTTP_422_UNPROCESSABLE_ENTITY
         )
+
+class SiliconFlowAPIException(HTTPException):
+    def __init__(self, detail: str, status_code: int = 400):
+        super().__init__(
+            status_code=status_code,
+            detail=f"SiliconFlow API error: {detail}"
+        )
\ No newline at end of file
diff --git a/src/backend/app/utils/logger.py b/src/backend/app/utils/logger.py
index 3021c0e..f0177f8 100644
--- a/src/backend/app/utils/logger.py
+++ b/src/backend/app/utils/logger.py
@@ -1,33 +1,44 @@
+
 import logging
 from loguru import logger
 import sys
 
 
+
 class InterceptHandler(logging.Handler):
     def emit(self, record):
-        # Get corresponding Loguru level if it exists
+        # 获取对应的Loguru日志级别
         try:
             level = logger.level(record.levelname).name
         except ValueError:
             level = record.levelno
 
-        # Find caller from where originated the logged message
+        # 查找日志来源
         frame, depth = logging.currentframe(), 2
-        while frame.f_code.co_filename == logging.__file__:
+        while frame and frame.f_code.co_filename == logging.__file__:
             frame = frame.f_back
             depth += 1
 
+        # 使用Loguru记录日志
         logger.opt(depth=depth, exception=record.exc_info).log(level, record.getMessage())
 
 
 def setup_logging():
     # 拦截标准logging
-    logging.basicConfig(handlers=[InterceptHandler()], level=0)
+    logging.basicConfig(handlers=[InterceptHandler()], level=logging.NOTSET)
 
-    # 配置loguru
-    logger.configure(
-        handlers=[
-            {"sink": sys.stdout,
-             "format": "<green>{time:YYYY-MM-DD HH:mm:ss.SSS}</green> | <level>{level: <8}</level> | <cyan>{name}</cyan>:<cyan>{function}</cyan>:<cyan>{line}</cyan> - <level>{message}</level>"}
-        ]
+    # 移除所有现有处理器
+    logger.remove()
+
+    # 直接添加处理器（避免configure方法）
+    logger.add(
+        sys.stdout,
+        format=(
+            "<green>{time:YYYY-MM-DD HH:mm:ss.SSS}</green> | "
+            "<level>{level: <8}</level> | "
+            "<cyan>{name}</cyan>:<cyan>{function}</cyan>:<cyan>{line}</cyan> - "
+            "<level>{message}</level>"
+        ),
+        level="DEBUG",
+        enqueue=True
     )
\ No newline at end of file