strict_content_type=strict_content_type,
        )
        self.exception_handlers: dict[
            Any, Callable[[Request, Any], Response | Awaitable[Response]]
        ] = {} if exception_handlers is None else dict(exception_handlers)
        self.exception_handlers.setdefault(HTTPException, http_exception_handler)
        self.exception_handlers.setdefault(
            RequestValidationError, request_validation_exception_handler