- 但是如果您指定了一个自定义响应类，并将 `None `作为其媒体类型，**FastAPI**将使用 `application/json` 作为具有关联模型的任何其他响应。

///

## 组合信息
您还可以联合接收来自多个位置的响应信息，包括 `response_model `、 `status_code` 和 `responses `参数。

您可以使用默认的状态码 `200` （或者您需要的自定义状态码）声明一个 `response_model `，然后直接在OpenAPI模式中在 `responses` 中声明相同响应的其他信息。

**FastAPI**将保留来自 `responses` 的附加信息，并将其与模型中的JSON Schema结合起来。

{* ../../docs_src/path_operation_advanced_configuration/tutorial004.py hl[19:29] *}

## Additional Responses { #additional-responses }

You probably have seen how to declare the `response_model` and `status_code` for a *path operation*.

That defines the metadata about the main response of a *path operation*.

You can also declare additional responses with their models, status codes, etc.

///

### `Response`

メインの `Response` クラスで、他の全てのレスポンスはこれを継承しています。

直接返すことができます。

以下のパラメータを受け付けます。

* `content` - `str` か `bytes`。
* `status_code` - `int` のHTTPステータスコード。
* `headers` - 文字列の `dict` 。
* `media_type` - メディアタイプを示す `str` 。例えば `"text/html"` 。

Zusammen mit Hug (da Hug auf Falcon basiert), einen `response`-Parameter in Funktionen zu deklarieren.

Obwohl er in FastAPI optional ist und hauptsächlich zum Festlegen von Headern, Cookies und alternativen Statuscodes verwendet wird.

///

### <a href="https://moltenframework.com/" class="external-link" target="_blank">Molten</a>

        `dtensor.shutdown_tpu_system`.

## Deprecations

*   The C++ `tensorflow::Code` and `tensorflow::Status` will become aliases of
    respectively `absl::StatusCode` and `absl::Status` in some future release.
    *   Use `tensorflow::OkStatus()` instead of `tensorflow::Status::OK()`.
    *   Stop constructing `Status` objects from `tensorflow::error::Code`.

pkg net/http, type Response struct, ProtoMinor int
pkg net/http, type Response struct, Request *Request
pkg net/http, type Response struct, Status string
pkg net/http, type Response struct, StatusCode int
pkg net/http, type Response struct, Trailer Header
pkg net/http, type Response struct, TransferEncoding []string
pkg net/http, type ResponseWriter interface { Header, Write, WriteHeader }

    try:
        yield "Rick"
    except OwnerError as e:
        raise HTTPException(status_code=400, detail=f"Owner error: {e}")


@app.get("/items/{item_id}")
def get_item(item_id: str, username: Annotated[str, Depends(get_username)]):
    if item_id not in data:
        raise HTTPException(status_code=404, detail="Item not found")
    item = data[item_id]
    if item["owner"] != username:

pkg net/http, const StatusExpectationFailed = 417
pkg net/http, const StatusForbidden = 403
pkg net/http, const StatusFound = 302
pkg net/http, const StatusGatewayTimeout = 504
pkg net/http, const StatusGone = 410
pkg net/http, const StatusHTTPVersionNotSupported = 505
pkg net/http, const StatusInternalServerError = 500
pkg net/http, const StatusLengthRequired = 411
pkg net/http, const StatusMethodNotAllowed = 405