我要如何检查一个302回应？ WebRequest的

问题描述

使用的WebRequest我想知道如果我得到一个302暂时移动的回应，而不是自动获取新的网址

Using WebRequest i want to know if i get a "302 Moved Temporarily" response instead of automatically get the new url

推荐答案

如果要检测，而不是跟随它自动创建的WebRequest ，并设置一个重定向响应， AllowAutoRedirect 属性假：

If you want to detect a redirect response, instead of following it automatically create the WebRequest and set the AllowAutoRedirect property to false:

HttpWebRequest req = WebRequest.Create(someUrl) as HttpWebRequest;
req.AllowAutoRedirect = false;
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
if (response.StatusCode == HttpStatusCode.Redirect || 
    response.StatusCode == HttpStatusCode.MovedPermanently)
{
    // Do something...
    string newUrl = response.Headers["Location"];
}

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