/// warning | "Achtung"

Sie können mehrere `File`- und `Form`-Parameter in einer *Pfadoperation* deklarieren, aber Sie können nicht gleichzeitig auch `Body`-Felder deklarieren, welche Sie als JSON erwarten, da der Request den Body mittels `multipart/form-data` statt `application/json` kodiert.

Das ist keine Limitation von **FastAPI**, sondern Teil des HTTP-Protokolls.

///

## Zusammenfassung

/// info

`Form` ist eine Klasse, die direkt von `Body` erbt.

///

/// tip | "Tipp"

Um Formularbodys zu deklarieren, verwenden Sie explizit `Form`, da diese Parameter sonst als Query-Parameter oder Body(-JSON)-Parameter interpretiert werden würden.

///

    // GET /api/admin/crawlinginfo/logs
    // POST /api/admin/crawlinginfo/logs
    @Execute
    public JsonResponse<ApiResult> logs(final SearchBody body) {
        validateApi(body, messages -> {});
        final CrawlingInfoPager pager = copyBeanToNewBean(body, CrawlingInfoPager.class);
        final List<CrawlingInfo> list = crawlingInfoService.getCrawlingInfoList(pager);

    // GET /api/admin/failureurl/logs
    // POST /api/admin/failureurl/logs
    @Execute
    public JsonResponse<ApiResult> logs(final SearchBody body) {
        validateApi(body, messages -> {});
        final FailureUrlPager pager = copyBeanToNewBean(body, FailureUrlPager.class);
        final List<FailureUrl> list = failureUrlService.getFailureUrlList(pager);

  fun successfulCallEventSequence() {
    server!!.enqueue(MockResponse(body = "abc"))
    val call =
      client.newCall(
        Request.Builder()
          .url(server!!.url("/"))
          .build(),
      )
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("abc")
    response.body.close()
    assertThat(listener.recordedEventTypes()).containsExactly(

   * body. This was misleading for tracing because it was too early.
   */
  open fun responseBodyStart(call: Call) {
  }

  /**
   * Invoked immediately after receiving a response body and completing reading it.
   *
   * Will only be invoked for requests having a response body e.g. won't be invoked for a web socket
   * upgrade.
   *

* `Path()`
* `Query()`
* `Header()`
* `Cookie()`
* `Body()`
* `Form()`
* `File()`

you can also declare a group of `examples` with additional information that will be added to their **JSON Schemas** inside of **OpenAPI**.

### `Body` with `examples`

Here we pass `examples` containing one example of the data expected in `Body()`:

//// tab | Python 3.10+

```Python hl_lines="22-29"

    RtmStartResponse rtmStartResponse = slackApi.rtmStart(accessToken);
    webSocket = slackApi.rtm(rtmStartResponse.url, this);
  }

  // TODO(jwilson): can I read the response body? Do I have to?
  //                the body from slack is a 0-byte-buffer
  @Override public synchronized void onOpen(WebSocket webSocket, Response response) {
    System.out.println("onOpen: " + response);
  }

And you can declare some of the files as `bytes` and some as `UploadFile`.

/// warning

You can declare multiple `File` and `Form` parameters in a *path operation*, but you can't also declare `Body` fields that you expect to receive as JSON, as the request will have the body encoded using `multipart/form-data` instead of `application/json`.

This is not a limitation of **FastAPI**, it's part of the HTTP protocol.

///

## Recap

///

Zuerst erstellen wir eine `GzipRequest`-Klasse, welche die Methode `Request.body()` überschreibt, um den Body bei Vorhandensein eines entsprechenden Headers zu dekomprimieren.

Wenn der Header kein `gzip` enthält, wird nicht versucht, den Body zu dekomprimieren.

Auf diese Weise kann dieselbe Routenklasse gzip-komprimierte oder unkomprimierte Requests verarbeiten.