# レスポンス - ステータスコードの変更 { #response-change-status-code }

すでに、デフォルトの[レスポンスのステータスコード](../tutorial/response-status-code.md)を設定できることをご存知かもしれません。

しかし場合によっては、デフォルトとは異なるステータスコードを返す必要があります。

## ユースケース { #use-case }

たとえば、デフォルトでは HTTP ステータスコード "OK" `200` を返したいとします。

しかし、データが存在しなければそれを作成し、HTTP ステータスコード "CREATED" `201` を返したい。

それでも、返すデータは `response_model` でフィルタ・変換できるようにしておきたい。

そのような場合は `Response` パラメータを使えます。

# Custom Response Classes - File, HTML, Redirect, Streaming, etc.

There are several custom response classes you can use to create an instance and return them directly from your *path operations*.

Read more about it in the [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/).

You can import them directly from `fastapi.responses`:

```python
from fastapi.responses import (
    FileResponse,

        response = suggester.suggest().setQuery("zenbun").setSuggestDetail(true).execute().getResponse();
        assertEquals(1, response.getNum());
        assertEquals("全文 検索", response.getWords().get(0));

        response = suggester.suggest().addKind("query").execute().getResponse();
        assertEquals(1, response.getNum());

        SuggestResponse response2 = suggester.suggest().setSuggestDetail(true).execute().getResponse();

    server.enqueue(MockResponse(body = "b"))
    val request = Request(server.url("/"))
    val response1 = client.newCall(request).execute()
    val response2 = client.newCall(request).execute()
    response1.body.string() // Discard the response body.
    response2.body.string() // Discard the response body.
    assertThat(server.takeRequest().exchangeIndex).isEqualTo(0)

        String response = checkGetMethod(searchBody, "").asString();

        // Verify JSON structure
        assertNotNull(response, "Response should not be null");
        assertTrue(response.contains("response"), "Response should contain 'response' field");
        assertTrue(response.contains("status"), "Response should contain 'status' field");

    directly to JSON bytes via Pydantic when a return type or response model is
    set, which is faster and doesn't need a custom response class.

    Read more in the
    [FastAPI docs for Custom Response](https://fastapi.tiangolo.com/advanced/custom-response/#orjson-or-response-model)
    and the
    [FastAPI docs for Response Model](https://fastapi.tiangolo.com/tutorial/response-model/).

        }

        String response2Body;
        try (Response response2 = client.newCall(request).execute()) {
          if (!response2.isSuccessful()) throw new IOException("Unexpected code " + response2);

          response2Body = response2.body().string();
          System.out.println("Response 2 response:          " + response2);

    public void test_constructorWithoutErrors() throws Exception {
        SuggestDeleteResponse response = new SuggestDeleteResponse(null, 100);

        assertNotNull(response);
        assertEquals(100, response.getTook());
        assertFalse(response.hasError());
        assertNotNull(response.getErrors());
        assertEquals(0, response.getErrors().size());
    }

    @Test

        verify(response).setUid(1000);

        doNothing().when(response).setExtendedSecurity(true);
        response.setExtendedSecurity(true);
        verify(response).setExtendedSecurity(true);

        doNothing().when(response).setSessionId(999L);
        response.setSessionId(999L);
        verify(response).setSessionId(999L);

        // Test reset method
        doNothing().when(response).reset();

                        response.body = b""
                    response.headers.raw.extend(solved_result.response.headers.raw)
        if errors:
            validation_error = RequestValidationError(
                errors, body=body, endpoint_ctx=endpoint_ctx
            )
            raise validation_error

        # Return response
        assert response
        return response

    return app