if err != nil {
		log.Printf("Error reading request body: %v", err)
		w.WriteHeader(http.StatusBadRequest)
		return
	}

	log.Printf(">>> %s %s\n", r.Method, r.URL.Path)
	var out bytes.Buffer
	json.Indent(&out, body, "", "    ")
	log.Printf("%s\n", out.String())

	w.WriteHeader(http.StatusOK)
}

func main() {
	flag.Parse()
	http.HandleFunc("/", mainHandler)

	log.Printf("Listening on :%d\n", port)

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Kattints rá a "Try it out" gombra, ennek segítségével kitöltheted a paramétereket és közvetlen használhatod az API-t:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Cliquez sur le bouton "Try it out", il vous permet de renseigner les paramètres et d'interagir directement avec l'API :

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* "Try it out" butonuna tıklayalım, bu işlem API parametleri üzerinde değişiklik yapmamıza ve doğrudan API ile etkileşime geçmemize imkan sağlayacak:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Натисніть кнопку "Try it out", це дозволить вам заповнити параметри та безпосередньо взаємодіяти з API:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* "Try it out" 버튼을 클릭하면, 매개변수를 채울 수 있게 해주고 직접 API와 상호작용 할 수 있습니다:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

* 그러고 나서 "Execute" 버튼을 누르면, 사용자 인터페이스는 API와 통신하고 매개변수를 전송하며 그 결과를 가져와서 화면에 표시합니다:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-05-swagger-04.png)

### 대안 API 문서 업그레이드

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

- 點擊 "Try it out" 按鈕， 你可以填寫參數並直接與 API 互動：

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

- 然後點擊 "Execute" 按鈕，使用者介面將會向 API 發送請求，並將結果顯示在螢幕上：

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-05-swagger-04.png)

### ReDoc API 文件升級

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Haz click en el botón de "Try it out" que te permite llenar los parámetros e interactuar directamente con la API:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Kliknij przycisk "Try it out" (wypróbuj), pozwoli Ci to wypełnić parametry i bezpośrednio użyć API:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Нажмите на кнопку "Try it out", это позволит вам заполнить параметры и напрямую взаимодействовать с API:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)