/// note | "技术细节"

你也可以使用 `from starlette.middleware.cors import CORSMiddleware`。

出于方便，**FastAPI** 在 `fastapi.middleware` 中为开发者提供了几个中间件。但是大多数可用的中间件都是直接来自 Starlette。

///

## 自定义头部

请注意，可以使用'X-'前缀添加自定义专有头部。

necesario que los añadas a tus configuraciones de CORS (puedes leer más en [CORS (Cross-Origin Resource Sharing)](../tutorial/cors.md){.internal-link target=_blank}), usando el parámetro `expose_headers` documentado en <a href="https://www.starlette.io/middleware/#corsmiddleware" class="external-link" target="_blank">Starlette's CORS docs</a>....

/// note | "技術詳細"

`from starlette.middleware.cors import CORSMiddleware` も使用できます。

**FastAPI** は、開発者の利便性を高めるために、`fastapi.middleware` でいくつかのミドルウェアを提供します。利用可能なミドルウェアのほとんどは、Starletteから直接提供されています。

➡️ 👀 ❔ ⚒ ⚙️ 🛃 `Request` 🏿 🗜 🗜 📨.

& `APIRoute` 🏿 ⚙️ 👈 🛃 📨 🎓.

### ✍ 🛃 `GzipRequest` 🎓

/// tip

👉 🧸 🖼 🎦 ❔ ⚫️ 👷, 🚥 👆 💪 🗜 🐕‍🦺, 👆 💪 ⚙️ 🚚 [`GzipMiddleware`](../advanced/middleware.md#gzipmiddleware){.internal-link target=_blank}.

///

🥇, 👥 ✍ `GzipRequest` 🎓, ❔ 🔜 📁 `Request.body()` 👩‍🔬 🗜 💪 🔍 ☑ 🎚.

🚥 📤 🙅‍♂ `gzip` 🎚, ⚫️ 🔜 🚫 🔄 🗜 💪.

👈 🌌, 🎏 🛣 🎓 💪 🍵 🗜 🗜 ⚖️ 🗜 📨.

        """
        Add a middleware to the application.

        Read more about it in the
        [FastAPI docs for Middleware](https://fastapi.tiangolo.com/tutorial/middleware/).

        ## Example

        ```python
        import time

        from fastapi import FastAPI, Request

        app = FastAPI()


        @app.middleware("http")

// name of the function handler passed (this handler must be a method of
// `adminAPIHandlers`).
//
// - sets up call to send AuditLog
//
// While this is a middleware function (i.e. it takes a handler function and
// returns one), due to flags being passed based on required conditions, it is
// done per-"handler function registration" in the router.
//

[tool.pytest.ini_options]
addopts = [
  "--strict-config",
  "--strict-markers",
  "--ignore=docs_src",
]
xfail_strict = true
junit_family = "xunit2"
filterwarnings = [
    "error",
    'ignore:starlette.middleware.wsgi is deprecated and will be removed in a future release\..*:DeprecationWarning:starlette',
    # For passlib
    "ignore:'crypt' is deprecated and slated for removal in Python 3.13:DeprecationWarning",

				writeErrorResponse(r.Context(), w, errorCodes.ToAPIErr(ErrInsecureSSECustomerRequest), r.URL)
			}
			return
		}
		h.ServeHTTP(w, r)
	})
}

// setBucketForwardingMiddleware middleware forwards the path style requests
// on a bucket to the right bucket location, bucket to IP configuration
// is obtained from centralized etcd configuration service.

	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510
	github.com/google/uuid v1.6.0
	github.com/gorilla/mux v1.8.1
	github.com/gorilla/websocket v1.5.3
	github.com/grpc-ecosystem/go-grpc-middleware v1.4.0
	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
	github.com/hashicorp/go-multierror v1.1.1
	github.com/hashicorp/go-version v1.7.0
	github.com/hashicorp/golang-lru/v2 v2.0.7