# 州

要从美国某个特定州获取代理，请添加 `st` 标志到授权字符串中。例如， `us_california`, `us_illinois`。通过点击下面的文件可找到美国各州的完整列表：

{% file src="/files/a76d312b21a7061f804402d070e8d1ac3ffea023" %}

以下是一些有效的 `state` 参数组合示例：\
`st-us_california-city-los_angeles`\
`st-us_illinois-city-springfield`\
`st-us_michigan-city-detroit`\
`st-us_ohio-city-columbus`\
`st-us_maine-city-portland`\
`st-us_tennessee-city-memphis`

#### 代码示例

在此示例中，对 `ip.oxylabs.io` 的请求是从美国加利福尼亚州的一个随机 IP 地址发出的：

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

```shell
curl -x pr.oxylabs.io:7777 -U "customer-USERNAME-st-us_california:PASSWORD" https://ip.oxylabs.io/location
```

{% endtab %}

{% tab title="PHP" %}

```php
<?php
$username = 'USERNAME';
$password = 'PASSWORD';
$state = 'us_california';
$proxy = 'pr.oxylabs.io:7777';
$query = curl_init('https://ip.oxylabs.io/location');
curl_setopt($query, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($query, CURLOPT_PROXY, "http://$proxy");
curl_setopt($query, CURLOPT_PROXYUSERPWD, "customer-$username-st-$state:$password");
$output = curl_exec($query);
curl_close($query);
if ($output)
    echo $output;
?>
```

{% endtab %}

{% tab title="Python" %}

```python
import urllib.request
import random
username = 'USERNAME'
密码 = 'PASSWORD'
state = 'us_california'
entry = ('http://customer-%s-st-%s:%s@pr.oxylabs.io:7777' %
    (username, state, password))
query = urllib.request.ProxyHandler({
    'http': entry,
    'https': entry,
})
execute = urllib.request.build_opener(query)
print(execute.open('https://ip.oxylabs.io/location').read())
```

{% endtab %}

{% tab title="Java" %}

```java
package example;

import org.apache.http.HttpHost;
import org.apache.http.client.fluent.*;

public class Example {
    public static void main(String[] args) throws Exception {
        HttpHost entry = new HttpHost("pr.oxylabs.io", 7777);
        String query = Executor.newInstance()
            .auth(entry, "customer-USERNAME-st-us_california", "PASS")
            .execute(Request.Get("http://ip.oxylabs.io/location").viaProxy(entry))
            .returnContent().asString();
        System.out.println(query);
    }
}
```

{% endtab %}

{% tab title="C#" %}

```csharp
using System;
using System.Net;

类 Example
{
    静态 void Main()
    {
        var client = new WebClient();
        client.Proxy = new WebProxy("pr.oxylabs.io:7777");
        client.Proxy.Credentials = new NetworkCredential("customer-USERNAME-st-us_california", "PASSWORD");
        Console.WriteLine(client.DownloadString("https://ip.oxylabs.io/location"));
    }
}
```

{% endtab %}

{% tab title="Ruby" %}

```ruby
require 'uri'
require 'net/http'

uri = URI.parse('https://ip.oxylabs.io/')
proxy = Net::HTTP::Proxy('pr.oxylabs.io/location', 7777, 'customer-USERNAME-st-us_california', 'PASSWORD')

req = Net::HTTP::Get.new(uri.path)

result = proxy.start(uri.host,uri.port) do |http|
    http.request(req)
end

```

{% endtab %}
{% endtabs %}


---

# 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/mobile-proxies/location-settings/select-state.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.