> 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/proxies/mobile-proxies/location-settings/select-state.md).

# 州

使用移动代理定向美国特定州。了解如何按州筛选 IP，并将其与城市级定向结合。

要从美国特定州获取代理，请添加 `st` 标志到授权字符串中。例如， `us_california`, `us_illinois`。点击下方文件可查看美国各州完整列表：

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

以下是一些有效的 `州` 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` 的请求将从美国加利福尼亚州的随机 IP 地址发起：

{% 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;

class Example
{
    static 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 %}


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