* distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,

## 萬用字元 { #wildcards }

也可以將清單宣告為 `"*"`（「wildcard」萬用字元），表示全部都允許。

但那只會允許某些類型的通訊，凡是涉及憑證（credentials）的都會被排除：例如 Cookie、Authorization 標頭（像 Bearer Token 會用到的）等。

因此，為了讓一切正常運作，最好明確指定被允許的來源。

## 使用 `CORSMiddleware` { #use-corsmiddleware }

你可以在 **FastAPI** 應用程式中使用 `CORSMiddleware` 來設定：

* 匯入 `CORSMiddleware`。
* 建立允許的來源清單（字串）。
* 將它加入到你的 **FastAPI** 應用程式做為「中介軟體（middleware）」。

你也可以指定你的後端是否允許：

      <span style="background-color:#007166"><font color="#D3D7CF"> tip </font></span>  Running in development mode, for production use:
             <b>fastapi run</b>

             Logs:

     <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Will watch for changes in these directories:

/*
 * Copyright 2012-2025 CodeLibs Project and the Others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

/*
 * Copyright (C) 2009 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License

JSON として構造化できるデータをストリームしたい場合は、[JSON Lines をストリームする](../tutorial/stream-json-lines.md) を参照してください。

しかし、純粋なバイナリデータや文字列をストリームしたい場合は、次のようにできます。

/// info | 情報

FastAPI 0.134.0 で追加されました。

///

## ユースケース { #use-cases }

例えば、AI LLM サービスの出力をそのまま、純粋な文字列としてストリームしたい場合に使えます。

メモリに一度に全て読み込むことなく、読み込みながらチャンクごとに送ることで、巨大なバイナリファイルをストリームすることにも使えます。

同様に、動画や音声をストリームすることもできます。処理しながら生成し、そのまま送信することも可能です。

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Tests that involve both reading and writing.

package zip

import (
	"bytes"
	"cmp"
	"errors"
	"fmt"
	"hash"
	"internal/testenv"
	"io"
	"runtime"
	"slices"
	"strings"
	"testing"
	"time"
)

func TestOver65kFiles(t *testing.T) {

    <suppress checks="RegexpHeader"
              files=".*[/\\]maven[/\\]src[/\\]main[/\\]java[/\\]org[/\\]apache[/\\].+"/>

    <!-- Ignore constant name for architecture tests since we want to use snake case there -->
    <suppress checks="ConstantName"
              files=".*[/\\]architecture-test[/\\]src[/\\]test[/\\]java[/\\]org[/\\]gradle[/\\].+" />
    <suppress checks="ConstantName"

/*
 * Copyright (C) 2011 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

/*
 * Copyright (C) 2011 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License