Initial FastAPI admin auth scaffold

app/exception/handler.py

@@ -0,0 +1,34 @@
+from fastapi import FastAPI, Request
+from fastapi.exceptions import RequestValidationError
+from fastapi.responses import JSONResponse
+
+from app.constants.result_code import ResultCode
+from app.exception.err_exception import ErrException
+from app.lib.response.admin_return import AdminReturn
+
+
+async def err_exception_handler(request: Request, exc: ErrException) -> JSONResponse:
+    return JSONResponse(
+        status_code=200,
+        content=AdminReturn().error(exc.message, exc.code, exc.data),
+    )
+
+
+async def validation_exception_handler(
+    request: Request,
+    exc: RequestValidationError,
+) -> JSONResponse:
+    first_error = exc.errors()[0] if exc.errors() else {}
+    location = ".".join(str(item) for item in first_error.get("loc", []))
+    message = first_error.get("msg", "参数错误")
+    if location:
+        message = f"{location}: {message}"
+    return JSONResponse(
+        status_code=200,
+        content=AdminReturn().error(message, ResultCode.ERROR),
+    )
+
+
+def register_exception_handlers(app: FastAPI) -> None:
+    app.add_exception_handler(ErrException, err_exception_handler)
+    app.add_exception_handler(RequestValidationError, validation_exception_handler)