From 402102cf364f5a1027cccbf2ee49f451e440b0cf Mon Sep 17 00:00:00 2001
From: wzy-warehouse <18135009705@163.com>
Date: Sat, 20 Jun 2026 17:07:05 +0800
Subject: [PATCH] =?UTF-8?q?QGIS=E4=BF=AE=E6=94=B9=E6=97=A5=E5=BF=97?=
 =?UTF-8?q?=E6=8A=A5=E9=94=99?=
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---
 app/config/paths.py | 16 +++------------
 app/utils/logger.py | 50 +++++++++++++++++++++++++++------------------
 2 files changed, 33 insertions(+), 33 deletions(-)

diff --git a/app/config/paths.py b/app/config/paths.py
index b8868ff..185b174 100644
--- a/app/config/paths.py
+++ b/app/config/paths.py
@@ -18,16 +18,6 @@ DBN_CONFIG_DIR = CONFIG_DIR / "dbn"
 
 
 def get_logger(name: str = "algorithm"):
-    """
-    获取日志记录器。主进程用 loguru，QGIS 子进程回退到标准 logging。
-    """
-    try:
-        from app.utils.logger import get_logger as _get_logger
-        return _get_logger(name, str(LOG_DIR))
-    except ImportError:
-        import logging
-        logging.basicConfig(
-            level=logging.INFO,
-            format="%(asctime)s [%(threadName)s] %(levelname)-5s %(name)s - %(message)s",
-        )
-        return logging.getLogger(name)
+    """获取日志记录器（loguru 不可用时自动回退标准 logging）"""
+    from app.utils.logger import LoggerManager
+    return LoggerManager.get_logger(name, str(LOG_DIR))
diff --git a/app/utils/logger.py b/app/utils/logger.py
index aad19b8..4b0319b 100644
--- a/app/utils/logger.py
+++ b/app/utils/logger.py
@@ -1,35 +1,45 @@
 """
 日志工具类
-使用 loguru 提供增强的日志功能，支持按天分割、自动清理过期日志
+主进程使用 loguru，QGIS 子进程回退到标准 logging。
 """
 import sys
 from pathlib import Path
-from loguru import logger
+
+try:
+    from loguru import logger as _loguru_logger
+    _HAS_LOGURU = True
+except ImportError:
+    _HAS_LOGURU = False
+    import logging as _std_logging
 
 
 class LoggerManager:
-    """日志管理器 - 基于 loguru"""
+    """日志管理器 - 优先 loguru，回退标准 logging"""
 
     _configured = False
+    _fallback_loggers = {}
 
     @classmethod
     def get_logger(cls, name: str = "algorithm", log_dir: str = "logs"):
-        """
-        获取日志记录器（loguru 不需要传统意义上的 logger 实例）
-        
-        Args:
-            name: 日志名称（用于文件命名）
-            log_dir: 日志目录
-            
-        Returns:
-            loguru.logger 实例
-        """
-        if not cls._configured:
-            cls._configure_logger(name, log_dir)
-        return logger
+        if _HAS_LOGURU:
+            if not cls._configured:
+                cls._configure_loguru(name, log_dir)
+            return _loguru_logger
+        else:
+            if name not in cls._fallback_loggers:
+                logger = _std_logging.getLogger(name)
+                logger.setLevel(_std_logging.INFO)
+                if not logger.handlers:
+                    h = _std_logging.StreamHandler(sys.stderr)
+                    h.setFormatter(_std_logging.Formatter(
+                        "%(asctime)s [%(threadName)s] %(levelname)-5s %(name)s - %(message)s"
+                    ))
+                    logger.addHandler(h)
+                cls._fallback_loggers[name] = logger
+            return cls._fallback_loggers[name]
 
     @classmethod
-    def _configure_logger(cls, name: str, log_dir: str):
+    def _configure_loguru(cls, name: str, log_dir: str):
         """
         配置 loguru 日志处理器
         
@@ -38,14 +48,14 @@ class LoggerManager:
             log_dir: 日志目录
         """
         # 移除默认的 stderr handler
-        logger.remove()
+        _loguru_logger.remove()
 
         # 创建日志目录
         log_path = Path(log_dir)
         log_path.mkdir(parents=True, exist_ok=True)
 
         # 控制台 Handler - 彩色输出
-        logger.add(
+        _loguru_logger.add(
             sink=sys.stderr,
             level="INFO",
             format="<green>{time:YYYY-MM-DD HH:mm:ss}</green> [<cyan>{thread.name}</cyan>] <level>{level: <5}</level> <blue>{name}</blue> - <level>{message}</level>",
@@ -54,7 +64,7 @@ class LoggerManager:
 
         # 文件 Handler - 按大小分割，Windows 兼容
         log_file = log_path / f"{name}.log"
-        logger.add(
+        _loguru_logger.add(
             sink=str(log_file),
             level="DEBUG",
             format="{time:YYYY-MM-DD HH:mm:ss} [{thread.name}] {level: <5} {name} - {message}",