第一次提交

backend/app/core/error_handler.py

@@ -0,0 +1,75 @@
+"""
+全局错误处理器
+"""
+import logging
+import traceback
+from fastapi import Request, status
+from fastapi.responses import JSONResponse
+from fastapi.exceptions import RequestValidationError
+from sqlalchemy.exc import SQLAlchemyError
+from app.core.exceptions import BaseAPIException
+
+logger = logging.getLogger(__name__)
+
+
+async def validation_exception_handler(request: Request, exc: RequestValidationError):
+    """处理验证错误"""
+    errors = []
+    for error in exc.errors():
+        field = ".".join(str(loc) for loc in error.get("loc", []))
+        errors.append({
+            "field": field,
+            "message": error.get("msg"),
+            "type": error.get("type")
+        })
+    
+    logger.warning(f"验证错误: {errors}")
+    
+    return JSONResponse(
+        status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
+        content={
+            "error": "VALIDATION_ERROR",
+            "message": "请求参数验证失败",
+            "details": errors
+        }
+    )
+
+
+async def api_exception_handler(request: Request, exc: BaseAPIException):
+    """处理自定义API异常"""
+    logger.error(f"API异常: {exc.detail} (错误码: {exc.error_code})")
+    
+    return JSONResponse(
+        status_code=exc.status_code,
+        content={
+            "error": exc.error_code or "API_ERROR",
+            "message": exc.detail
+        }
+    )
+
+
+async def sqlalchemy_exception_handler(request: Request, exc: SQLAlchemyError):
+    """处理数据库错误"""
+    logger.error(f"数据库错误: {str(exc)}", exc_info=True)
+    
+    return JSONResponse(
+        status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+        content={
+            "error": "DATABASE_ERROR",
+            "message": "数据库操作失败，请稍后重试"
+        }
+    )
+
+
+async def general_exception_handler(request: Request, exc: Exception):
+    """处理通用异常"""
+    logger.error(f"未处理的异常: {str(exc)}", exc_info=True)
+    logger.error(f"异常堆栈: {traceback.format_exc()}")
+    
+    return JSONResponse(
+        status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+        content={
+            "error": "INTERNAL_ERROR",
+            "message": "服务器内部错误，请稍后重试"
+        }
+    )