### `Depends`のインポート

{* ../../docs_src/dependencies/tutorial001.py hl[3] *}

### "dependant"での依存関係の宣言

*path operation関数*のパラメータに`Body`や`Query`などを使用するのと同じように、新しいパラメータに`Depends`を使用することができます:

{* ../../docs_src/dependencies/tutorial001.py hl[13,18] *}

関数のパラメータに`Depends`を使用するのは`Body`や`Query`などと同じですが、`Depends`の動作は少し異なります。

`Depends`は１つのパラメータしか与えられません。

このパラメータは関数のようなものである必要があります。

            openapi_examples=openapi_examples,
            include_in_schema=include_in_schema,
            json_schema_extra=json_schema_extra,
            **extra,
        )


class Body(FieldInfo):  # type: ignore[misc]
    def __init__(
        self,
        default: Any = Undefined,
        *,
        default_factory: Union[Callable[[], Any], None] = _Unset,

    Request request = new Request.Builder()
        .url("http://publicobject.com/helloworld.txt")
        .build();

    try (Response response = client.newCall(request).execute()) {
      System.out.println(response.body().string());
    }

    server.shutdown();
    socketFile.delete();
  }

  public static void main(String... args) throws Exception {
    new ClientAndServer().run();
  }

    logging.info("Pushing branch")
    subprocess.run(["git", "push", "origin", branch_name], check=True)
    logging.info("Creating PR")
    pr = repo.create_pull(title=message, body=message, base="master", head=branch_name)
    logging.info(f"Created PR: {pr.number}")
    logging.info("Finished")


if __name__ == "__main__":

  }

  @Test
  fun testRedirectsDoNotIncludeTooManyCookies() {
    val redirectTarget = MockWebServer()
    redirectTarget.enqueue(MockResponse.Builder().body("A").build())
    redirectTarget.start()
    val redirectTargetUrl = urlWithIpAddress(redirectTarget, "/")
    val redirectSource = MockWebServer()
    redirectSource.enqueue(
      MockResponse
        .Builder()

首先，新建包含一些用于回调的 `APIRouter`。

{* ../../docs_src/openapi_callbacks/tutorial001.py hl[5,26] *}

### 创建回调*路径操作*

创建回调*路径操作*也使用之前创建的 `APIRouter`。

它看起来和常规 FastAPI *路径操作*差不多：

* 声明要接收的请求体，例如，`body: InvoiceEvent`
* 还要声明要返回的响应，例如，`response_model=InvoiceEventReceived`

{* ../../docs_src/openapi_callbacks/tutorial001.py hl[17:19,22:23,29:33] *}

回调*路径操作*与常规*路径操作*有两点主要区别：

     *       <th>Output Directory</th>
     *       <th>Result ({@code targetPath(project)})</th>
     *       <th>Explanation</th>
     *     </tr>
     *   </thead>
     *   <tbody>
     *     <tr>
     *       <td>{@code Optional.empty()}</td>
     *       <td>{@code /home/user/myproject/target/classes}</td>
     *       <td>{@code /home/user/myproject/target/classes}</td>

![ReDoc](https://fastapi.tiangolo.com/img/index/index-02-redoc-simple.png)

## Example upgrade

Now modify the file `main.py` to receive a body from a `PUT` request.

Declare the body using standard Python types, thanks to Pydantic.

```Python hl_lines="4  9-12  25-27"
from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel

        .post(requestBody)
        .build()

    client.newCall(request).execute().use { response ->
      if (!response.isSuccessful) throw IOException("Unexpected code $response")

      println(response.body.string())
    }
  }

  companion object {
    /**
     * The imgur client ID for OkHttp recipes. If you're using imgur for anything other than running

    logging.info("Pushing branch")
    subprocess.run(["git", "push", "origin", branch_name], check=True)
    logging.info("Creating PR")
    pr = repo.create_pull(title=message, body=message, base="master", head=branch_name)
    logging.info(f"Created PR: {pr.number}")
    logging.info("Finished")


if __name__ == "__main__":