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docs_src/websockets_/tutorial002_an_py310.py

from typing import Annotated

from fastapi import (
    Cookie,
    Depends,
    FastAPI,
    Query,
    WebSocket,
    WebSocketException,
    status,
)
from fastapi.responses import HTMLResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <form action="" onsubmit="sendMessage(event)">

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs_src/websockets_/tutorial002_py310.py

from fastapi import (
    Cookie,
    Depends,
    FastAPI,
    Query,
    WebSocket,
    WebSocketException,
    status,
)
from fastapi.responses import HTMLResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <form action="" onsubmit="sendMessage(event)">

Created: Sun Apr 05 07:19:11 GMT 2026

- Last Modified: Fri Feb 27 12:34:37 GMT 2026

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github.com/tiangolo/fastapi

docs/es/docs/advanced/websockets.md

Puedes enviar (y recibir) muchos mensajes:

<img src="/img/tutorial/websockets/image04.png">

Y todos usarán la misma conexión WebSocket.

## Usando `Depends` y otros { #using-depends-and-others }

En endpoints de WebSocket puedes importar desde `fastapi` y usar:

* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`

Funcionan de la misma manera que para otros endpoints de FastAPI/*path operations*:

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs/zh/docs/tutorial/security/get-current-user.md

## 注入当前用户 { #inject-the-current-user }

在*路径操作* 的 `Depends` 中使用 `get_current_user`：

{* ../../docs_src/security/tutorial002_an_py310.py hl[31] *}

注意，此处把 `current_user` 的类型声明为 Pydantic 的 `User` 模型。

这有助于在函数内部使用代码补全和类型检查。

/// tip | 提示

还记得请求体也是使用 Pydantic 模型声明的吧。

放心，因为使用了 `Depends`，**FastAPI** 不会搞混。

///

/// check | 检查

依赖系统的这种设计方式可以支持不同的依赖项返回同一个 `User` 模型。

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs/pt/docs/advanced/websockets.md

Você pode enviar (e receber) muitas mensagens:

<img src="/img/tutorial/websockets/image04.png">

E todas elas usarão a mesma conexão WebSocket.

## Usando `Depends` e outros { #using-depends-and-others }

Nos endpoints WebSocket você pode importar do `fastapi` e usar:

* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`

Eles funcionam da mesma forma que para outros endpoints FastAPI/*operações de rota*:

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github.com/gradle/gradle

build-logic-commons/gradle-plugin/src/main/kotlin/gradlebuild/nullaway/NullawayAttributes.kt

    override fun execute(details: CompatibilityCheckDetails<NullawayState>) {
        with(details) {
            when {
                // Nullaway-enabled targets must not depend on nullaway-disabled ones.
                // They can depend on nullaway-undefined, which any external dependency is going to be.
                producerValue == NullawayState.DISABLED && consumerValue == NullawayState.ENABLED -> incompatible()

Created: Wed Apr 01 11:36:16 GMT 2026

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github.com/tiangolo/fastapi

docs/tr/docs/tutorial/dependencies/dependencies-in-path-operation-decorators.md

Bu gibi durumlarda, `Depends` ile bir *path operation function* parametresi tanımlamak yerine, *path operation decorator*'üne `dependencies` adında bir `list` ekleyebilirsiniz.

## *Path Operation Decorator*'üne `dependencies` Ekleyin { #add-dependencies-to-the-path-operation-decorator }

*Path operation decorator*, opsiyonel bir `dependencies` argümanı alır.

Bu, `Depends()` öğelerinden oluşan bir `list` olmalıdır:

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs/fr/docs/advanced/websockets.md

<img src="/img/tutorial/websockets/image04.png">

Et tous utiliseront la même connexion WebSocket.

## Utiliser `Depends` et autres { #using-depends-and-others }

Dans les endpoints WebSocket, vous pouvez importer depuis `fastapi` et utiliser :

* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs/es/docs/tutorial/security/get-current-user.md

{* ../../docs_src/security/tutorial002_an_py310.py hl[19:22,26:27] *}

## Inyectar al usuario actual { #inject-the-current-user }

Entonces ahora podemos usar el mismo `Depends` con nuestro `get_current_user` en la *path operation*:

{* ../../docs_src/security/tutorial002_an_py310.py hl[31] *}

Ten en cuenta que declaramos el tipo de `current_user` como el modelo de Pydantic `User`.

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github.com/tiangolo/fastapi

docs/de/docs/advanced/websockets.md

<img src="/img/tutorial/websockets/image04.png">

Und alle verwenden dieselbe WebSocket-Verbindung.

## Verwendung von `Depends` und anderen { #using-depends-and-others }

In WebSocket-Endpunkten können Sie Folgendes aus `fastapi` importieren und verwenden:

* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`

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