.net - 如何检查302响应？ Web请求

Question

我想使用WebRequest知道是否


“ 302暂时移动”


响应，而不是自动获取新的网址。

Answer 1

如果要检测重定向响应，则可以自动创建WebRequest并将AllowAutoRedirect属性设置为false而不是遵循它：

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