> For the complete documentation index, see [llms.txt](https://developers.oxylabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.oxylabs.io/products/cn/web-scraper-api/features/http-context-and-job-management/headers-cookies-method.md).

# 请求头、Cookie、方法

了解如何在使用网页爬虫API抓取时自定义请求头、Cookie 或 HTTP 方法。

网页爬虫API 通过使用我们团队预定义的标头和 Cookie，最大化网站访问效率。如有需要，你可以定义自己的标头、Cookie 和 HTTP 方法。

## 自定义标头

如果你需要自己的标头，可以通过添加 `context:force_headers` 参数并将其设置为 `true` 在提交抓取任务时。网页爬虫API 会将你的自定义标头与预定义的标头集一起发送，然后用它们访问网站。

#### 代码示例

```json
{
    "context": [
        {
            "key": "force_headers",
            "value": true
        },
        {
            "key": "headers",
            "value": {
                "Accept-Language": "en-US,en;q=0.5"
            }
        }
    ],
    "source": "universal",
    "url": "https://example.com"
}
```

## 自定义 Cookie

如果你需要自己的 Cookie，可以通过添加以下内容来使用它们 `上下文:强制_Cookie` 参数并将其设置为 `true` 在提交爬取任务时。网页爬虫API 将把你的自定义 Cookie 与预定义的 Cookie 集合一起发送，然后使用它们访问网站。如果你也想复用相同的代理 IP 地址，请查看 [代理会话](/products/cn/web-scraper-api/features/localization/proxy-location.md#sessions) 文档。

#### 代码示例

```json
{
    "context": [
        {
            "key": "force_Cookie",
            "value": true
        },
        {
            "key": "Cookie",
            "value": [
                {
                    "key": "NID",
                    "value": "1234567890"
                }
            ]
        }
    ],
    "source": "universal",
    "url": "https://example.com"
}
```

## HTTP 方法

`通用` 源使用了 `GET` 默认的 HTTP 方法。

如果你需要向目标网站提交数据，必须将 HTTP 方法设置为 `POST` 并提供一个 Base64 编码的 `POST` 请求正文，放在 `context:content`。下面的示例提交 `hello=world` (Base64: `aGVsbG89d29ybGQ=`) 到一个会回显请求的页面，这样你就可以在 `数据` 返回内容的字段中。

#### 代码示例

```json
{
    "source": "universal",
    "url": "https://httpbin.org/post",
    "context": [
        {
            "key": "http_method",
            "value": "post"
        },
        {
            "key": "content",
            "value": "aGVsbG89d29ybGQ="
        }
    ]
}
```


---

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```
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```

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