c# - HttpWebRequest:如何识别为浏览器？

Question

问题是如何构造HttpWebRequest让被查询的服务器认为它来自浏览器？

Answer 1

您可以设置 User-Agent HTTP 请求 header 。

var request = (HttpWebRequest)WebRequest.Create("http://www.google.com");
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2";

或者如果您使用 WebClient :

using (var client = new WebClient())
{
    client.Headers[HttpRequestHeader.UserAgent] = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2";
    ...
}