"description": "Successful Response",
                            "content": {"application/json": {"schema": {}}},
                        },
                        "422": {
                            "description": "Validation Error",
                            "content": {
                                "application/json": {
                                    "schema": {

MinIO's Object Lambda, enables application developers to process data retrieved from MinIO before returning it to an application. You can register a Lambda Function target on MinIO, once successfully registered it can be used to transform the data for application GET requests on demand.

        @DisplayName("Should return correct mime type for multiple extensions")
        @CsvSource({ "txt, text/plain", "css, text/css", "js, application/x-javascript", "zip, application/zip", "tar, application/x-tar",
                "gz, application/x-gzip", "tiff, image/tiff", "tif, image/tiff" })
        void testVariousExtensions(String extension, String expectedMimeType) throws IOException {
            assertEquals(expectedMimeType, mimeMap.getMimeType(extension));

- Temporary credentials do not need to be stored with the application but are generated dynamically and provided to the application when requested. When (or even before) the temporary credentials expire, the application can request new credentials.

Following are advantages for using temporary credentials:

- Eliminates the need to embed long-term credentials with an application.

        |  -H 'Authorization: Bearer abc123' \
        |  -H 'Content-Type: application/json; charset=utf-8' \
        |  --data '{"key":"value"}'
        """.trimMargin(),
      )
  }

  @Test
  fun bodyContentTypeTakesPrecedence() {
    val body = "{\"key\":\"value\"}".toRequestBody("application/json".toMediaType())

    val request =
      Request
        .Builder()

            "/a/": {
                "get": {
                    "responses": {
                        "200": {
                            "description": "Successful Response",
                            "content": {"application/json": {"schema": {}}},
                        }
                    },
                    "summary": "Get A",
                    "operationId": "get_a_a__get",
                }
            },

例如，您可以添加一个额外的媒体类型` image/png` ，声明您的路径操作可以返回JSON对象（媒体类型 `application/json` ）或PNG图像：

{* ../../docs_src/additional_responses/tutorial002.py hl[19:24,28] *}

/// note

- 请注意，您必须直接使用 `FileResponse` 返回图像。

///

/// info

- 除非在 `responses` 参数中明确指定不同的媒体类型，否则**FastAPI**将假定响应与主响应类具有相同的媒体类型（默认为` application/json` ）。
- 但是如果您指定了一个自定义响应类，并将 `None `作为其媒体类型，**FastAPI**将使用 `application/json` 作为具有关联模型的任何其他响应。

///

## 组合信息

## Монтирование приложения **FastAPI** { #mounting-a-fastapi-application }

«Монтирование» означает добавление полностью независимого приложения по конкретному пути; далее оно будет обрабатывать всё под этим путём, используя объявленные в подприложении _операции пути_.

### Приложение верхнего уровня { #top-level-application }

Сначала создайте основное, верхнего уровня, приложение **FastAPI** и его *операции пути*:

                            "description": "Successful Response",
                            "content": {"application/json": {"schema": {}}},
                        },
                        "422": {
                            "description": "Validation Error",
                            "content": {
                                "application/json": {
                                    "schema": {

                    "summary": "Create Item",
                    "operationId": "create_item_items__post",
                    "requestBody": {
                        "content": {
                            "application/json": {
                                "schema": {"$ref": "#/components/schemas/Item"}
                            }
                        },
                        "required": True,
                    },