From 97058241ac339e9ab23223eb4b92cf1e17f40e91 Mon Sep 17 00:00:00 2001
From: mingjunzhao012665 <mingjunzhao012665@sohu-inc.com>
Date: Sun, 18 Jan 2026 17:09:06 +0800
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- 添加日志配置，支持详细的启动日志记录
- 改进环境变量加载逻辑，支持从 .env 文件加载并记录加载的环境变量
- 添加敏感信息脱敏处理，保护 API Key 等敏感配置
- 添加应用启动和关闭事件处理
- 添加配置信息日志记录，方便调试和排查问题
---
 api/main.py | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 79 insertions(+), 2 deletions(-)

diff --git a/api/main.py b/api/main.py
index e7cf4ee..ce9a8a4 100644
--- a/api/main.py
+++ b/api/main.py
@@ -2,22 +2,99 @@
 FastAPI 应用入口
 """
 import os
-from dotenv import load_dotenv
+import logging
+from pathlib import Path
+from dotenv import load_dotenv, dotenv_values
 
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 
+# 配置日志
+logging.basicConfig(
+    level=logging.INFO,
+    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
+    datefmt='%Y-%m-%d %H:%M:%S'
+)
+logger = logging.getLogger(__name__)
+
 # 加载环境变量
-load_dotenv()
+env_file = Path('.env')
+env_file_exists = env_file.exists()
+
+if env_file_exists:
+    logger.info(f"正在从文件加载环境变量: {env_file.absolute()}")
+    # 先读取环境变量文件内容（用于日志记录）
+    env_vars = dotenv_values(env_file)
+    # 然后加载到环境变量中
+    result = load_dotenv(env_file)
+    
+    # 敏感环境变量列表（只显示名称，不显示值）
+    sensitive_keys = ['SECRET_KEY', 'DEEPSEEK_API_KEY', 'LLM_API_KEY', 'PASSWORD', 'TOKEN', 'KEY']
+    
+    # 记录加载的环境变量
+    loaded_vars = []
+    for key, value in env_vars.items():
+        if value is None:
+            continue
+        if any(sensitive in key.upper() for sensitive in sensitive_keys):
+            # 敏感信息只显示名称和部分值
+            masked_value = f"{value[:4]}...{value[-4:]}" if value and len(value) > 8 else "***"
+            loaded_vars.append(f"{key}={masked_value}")
+        else:
+            loaded_vars.append(f"{key}={value}")
+    
+    logger.info(f"成功加载 {len(loaded_vars)} 个环境变量:")
+    for var in loaded_vars:
+        logger.info(f"  - {var}")
+else:
+    logger.warning(f".env 文件不存在: {env_file.absolute()}")
+    logger.info("尝试从系统环境变量加载配置")
+    load_dotenv()
 
 from database import init_db
 from routers import websocket, chapters, books, conversations, auth
 
 # 初始化数据库
+logger.info("正在初始化数据库...")
 init_db()
+logger.info("数据库初始化完成")
+
+# 记录关键配置信息
+logger.info("=== 应用配置信息 ===")
+logger.info(f"数据库连接: {os.getenv('DATABASE_URL', 'sqlite:///./life_echo.db')}")
+logger.info(f"JWT 算法: {os.getenv('ALGORITHM', 'HS256')}")
+logger.info(f"访问令牌过期时间: {os.getenv('ACCESS_TOKEN_EXPIRE_MINUTES', '120')} 分钟")
+
+# LLM 配置
+if os.getenv("DEEPSEEK_API_KEY"):
+    logger.info("LLM 提供商: DeepSeek")
+    logger.info(f"DeepSeek 模型: {os.getenv('DEEPSEEK_MODEL', 'deepseek-chat')}")
+    logger.info(f"DeepSeek Base URL: {os.getenv('DEEPSEEK_BASE_URL', 'https://api.deepseek.com')}")
+elif os.getenv("LLM_API_KEY"):
+    logger.info("LLM 提供商: 通用 LLM")
+    logger.info(f"LLM 模型: {os.getenv('LLM_MODEL', 'deepseek-chat')}")
+    logger.info(f"LLM Base URL: {os.getenv('LLM_BASE_URL', '未设置')}")
+else:
+    logger.warning("未检测到 LLM API Key 配置")
+logger.info("===================")
 
 app = FastAPI(title="Life Echo API", version="1.0.0")
 
+
+@app.on_event("startup")
+async def startup_event():
+    """应用启动事件"""
+    logger.info("=" * 50)
+    logger.info("Life Echo API 正在启动...")
+    logger.info("=" * 50)
+
+
+@app.on_event("shutdown")
+async def shutdown_event():
+    """应用关闭事件"""
+    logger.info("Life Echo API 正在关闭...")
+
+
 # CORS 配置
 app.add_middleware(
     CORSMiddleware,