# 数据中心代理

## 用户凭证

要开始使用 Oxylabs 数据中心代理，您必须先前往 [**Oxylabs 仪表盘**](https://dashboard.oxylabs.io/en/) 并购买符合您需求的方案。

之后，系统将引导您创建代理用户。代理用户凭证是您访问数据中心代理的凭证。

<figure><img src="/files/8e6749698834e9905a1d3e18d0cecf8c094b12b7" alt="" width="563"><figcaption></figcaption></figure>

{% hint style="success" %}
**请安全保存您的凭证**。密码会短暂可见，但您之后可以在仪表盘中轻松更改。
{% endhint %}

## 发起请求

创建代理用户后，会弹出一个窗口，显示您用于测试数据中心代理的第一条 cURL 请求。运行该代码将随机选择一个代理 IP，发出 HTTP 请求，并将该 IP 打印到输出中。

在您偏好的语言中复制下面的代码，并将 `USERNAME` 和 `PASSWORD` 参数更改为您的代理凭证：&#x20;

{% tabs %}
{% tab title="cURL" %}

```sh
curl -x dc.oxylabs.io:8000 -U "user-USERNAME:PASSWORD" https://ip.oxylabs.io/location 
```

{% endtab %}

{% tab title="Python" %}

```python
#pip install requests
import requests

username = 'USERNAME'
密码 = 'PASSWORD'
代理 = 'dc.oxylabs.io:8000'

代理 = {
   "https": ('https://user-%s:%s@%s' % (username, password, proxy))
}

response=requests.get("https://ip.oxylabs.io/location", 代理=代理)

print(response.content)
```

{% endtab %}

{% tab title="Node.js" %}

<pre class="language-javascript"><code class="lang-javascript"><strong>//npm install axios
</strong><strong>const axios = require("axios");
</strong>const https = require("https");

const client = axios.create({
    httpsAgent: new https.Agent({
        rejectUnauthorized: false,
    }),
});
const username = 'USERNAME';
const password = 'PASSWORD'

client
    .get("https://ip.oxylabs.io/location", {
        proxy: {
            protocol: "https",
            host: "dc.oxylabs.io",
            端口：8000,
            认证：{
                用户名：`user-${username}`,
                密码：password,
            },
        },
    })
    .then((res) => {
        console.log(res.data);
    })
    .catch((err) => console.error(err));

</code></pre>

{% endtab %}

{% tab title="PHP" %}

```php
<?php

$username = 'USERNAME';
$password = 'PASSWORD';
$proxy = 'dc.oxylabs.io:8000';
$target = 'https://ip.Oxylabs.io/location';

$request = curl_init($target);
curl_setopt($request, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($request, CURLOPT_PROXY, $proxy);
curl_setopt($request, CURLOPT_PROXYUSERPWD, "user-$username:$password");
$responseBody = curl_exec($request);
$error = curl_error($request);
curl_close($request);

if ($responseBody !== false) {
    echo '响应：' . $responseBody;
} 否则 {
    echo '连接代理失败：' . $error;
}
```

{% endtab %}

{% tab title="Go" %}

```go
package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	username, password, entry := "USERNAME", "PASSWORD", "dc.oxylabs.io:8000"
	proxy, err := url.Parse(fmt.Sprintf("https://user-%s:%s@%s", username, password, entry))
	if err != nil {
		panic(err)
	}

	transport := &http.Transport{
		Proxy: http.ProxyURL(proxy),
	}
	client := &http.Client{Transport: transport}
	target := "https://ip.oxylabs.io/location"
	response, err := client.Get(target)
	if err != nil {
		panic(err)
	}
	defer response.Body.Close()

	body, err := io.ReadAll(response.Body)
	if err != nil {
		panic(err)
	}

	fmt.Println("响应：")
	fmt.Println(string(body))
}
```

{% endtab %}

{% tab title="Java" %}

```java
package com.example;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Base64;

import org.apache.hc.client5.http.fluent.Request;
import org.apache.hc.core5.http.HttpHost;

public class App {
    public static void main(String[] args) throws IOException, URISyntaxException {
        String target = "http://ip.oxylabs.io/location";
        String username = "USERNAME";
        String password = "PASSWORD";
        String proxy = "dc.oxylabs.io:8000";

        URI proxyURI = new URI(String.format("https://user-%s:%s@%s", username, password, proxy));

        String basicAuth = new String(
                Base64.getEncoder()
                        .encode(
                                proxyURI.getUserInfo().getBytes()));
        String response = Request.get(target)
                .addHeader("Proxy-Authorization", "Basic " + basicAuth)
                .viaProxy(HttpHost.create(proxyURI))
                .execute().returnContent().asString();

        System.out.println(response);
    }
}

```

{% endtab %}

{% tab title="C#" %}

```csharp
using System.Net;

// .NET 目前不支持 HTTPS 代理
var proxy = new WebProxy {
    Address = new Uri("dc.oxylabs.io:8000"),
    Credentials = new NetworkCredential(
        userName: "user-USERNAME",
        password: "PASSWORD"
    )
};

var httpClientHandler = new HttpClientHandler {Proxy = proxy};

using var client = new HttpClient(handler: httpClientHandler, disposeHandler: true);

var result = await client.GetStringAsync("https://ip.oxylabs.io/location");
Console.WriteLine(result);
```

{% endtab %}
{% endtabs %}

要获取 **特定代理** 并在发起请求时，请参考 [**IP 控制**](/products/cn/dai-li/datacenter-proxies/ip-control.md) 页面。

{% hint style="info" %}
使用 [**ip.oxylabs.io/location**](https://ip.oxylabs.io/location) 以查看您的 IP 参数——该域名提供来自四个地理位置数据库的信息：MaxMind、IP2Location、DB-IP 和 IPinfo.io。这些参数包括 IP 地址、提供商、国家/地区、城市、ZIP 代码、ASN、组织名称、时区和 meta（如果数据库披露）。
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://developers.oxylabs.io/products/cn/dai-li/datacenter-proxies.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.