### Варианты использования: внешний сервис { #use-cases-external-service }

Пример: у вас есть внешний провайдер аутентификации, к которому нужно обращаться.

Вы отправляете ему токен, а он возвращает аутентифицированного пользователя.

//
// Usage:
//
//	go run ../../mkzip.go ../../zoneinfo.zip
//
// We use this program instead of 'zip -0 -r ../../zoneinfo.zip *' to get
// a reproducible generator that does not depend on which version of the
// external zip tool is used or the ordering of file names in a directory
// or the current time.
package main

import (
	"archive/zip"
	"bytes"
	"flag"
	"fmt"
	"hash/crc32"
	"io/fs"
	"log"
	"os"

For internal purposes, we use binary formats for their brevity.
We use the `Serializer` abstraction to separate the actual implementation of serialization from its uses.

When sharing data with external tools, we use JSON.

## Status

ACCEPTED

## Consequences

* The configuration cache serialization infrastructure should be used for all serialization.

{!../../docs_src/templates/static/styles.css!}
```

因为使用了 `StaticFiles`， **FastAPI** 应用会自动提供位于 URL `/static/styles.css`的 CSS 文件。

## 更多说明

import org.codelibs.fess.exception.CommandExecutionException;
import org.codelibs.fess.opensearch.user.exentity.User;

/**
 * Authentication chain implementation that executes external commands for user operations.
 * Provides user management through command-line tool execution for password changes and user deletion.
 */
public class CommandChain implements AuthenticationChain {

///

/// info

你还可以使用：

* `response_model_exclude_defaults=True`
* `response_model_exclude_none=True`

参考 <a href="https://docs.pydantic.dev/latest/concepts/serialization/#modeldict" class="external-link" target="_blank">Pydantic 文档</a> 中对 `exclude_defaults` 和 `exclude_none` 的描述。

 *
 * Copy WireSharkKeyLoggerListener to your test code to use in development.
 *
 * This logs TLSv1.2 on a JVM (OpenJDK 11+) without any additional code.  For TLSv1.3
 * an existing external tool is required.
 *
 * See https://stackoverflow.com/questions/61929216/how-to-log-tlsv1-3-keys-in-jsse-for-wireshark-to-decode-traffic
 *
 * Steps to run in your own code
 *

# 교차 출처 리소스 공유

<a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS" class="external-link" target="_blank">CORS 또는 "교차-출처 리소스 공유"</a>란, 브라우저에서 동작하는 프론트엔드가 자바스크립트로 코드로 백엔드와 통신하고, 백엔드는 해당 프론트엔드와 다른 "출처"에 존재하는 상황을 의미합니다.

## 출처

출처란 프로토콜(`http` , `https`), 도메인(`myapp.com`, `localhost`, `localhost.tiangolo.com` ), 그리고 포트(`80`, `443`, `8080` )의 조합을 의미합니다.

따라서, 아래는 모두 상이한 출처입니다:

* `http://localhost`
* `https://localhost`

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

nicht ausgeführt.

/// info | Info

Für weitere Informationen besuchen Sie bitte <a href="https://docs.python.org/3/library/__main__.html" class="external-link" target="_blank">die offizielle Python-Dokumentation</a>.

///

## Ihren Code mit Ihrem Debugger ausführen { #run-your-code-with-your-debugger }

因为`Response`对象可以非常便捷的设置headers和cookies，所以 **FastAPI** 同时也封装了`fastapi.Response`。

///