从HttpWebRequest和HttpWebResponse获取Http状态代码(200,301,404等)

Question

我试图HttpWebResponse从一个返回的对象中获取HTTP状态代码HttpWebRequest.我希望得到实际数字(200,301,302,404等)而不是文字说明.("Ok","MovedPermanently"等)数字是否隐藏在响应对象中的某个属性中？除了创建一个大开关功能之外的任何想法？谢谢.

HttpWebRequest webRequest = (HttpWebRequest)WebRequest
                                           .Create("http://www.gooogle.com/");
webRequest.AllowAutoRedirect = false;
HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse();
//Returns "MovedPermanently", not 301 which is what I want.
Console.Write(response.StatusCode.ToString());

Answer 1

Console.Write((int)response.StatusCode);

HttpStatusCode(类型response.StatusCode)是枚举,其中成员的值与HTTP状态代码匹配,例如

public enum HttpStatusCode
{
    ...
    Moved = 301,
    OK = 200,
    Redirect = 302,
    ...
}

Answer 2

您必须小心,4xx和5xx范围内的服务器响应会抛出WebException.您需要捕获它,然后从WebException对象获取状态代码:

try
{
    wResp = (HttpWebResponse)wReq.GetResponse();
    wRespStatusCode = wResp.StatusCode;
}
catch (WebException we)
{
    wRespStatusCode = ((HttpWebResponse)we.Response).StatusCode;
}

Answer 3

根据'dtb',您需要使用HttpStatusCode,但是在'zeldi'之后,您需要特别注意代码响应> = 400.

这对我有用:

HttpWebResponse response = null;
HttpStatusCode statusCode;
try
{
    response = (HttpWebResponse)request.GetResponse();
}
catch (WebException we)
{
    response = (HttpWebResponse)we.Response;
}

statusCode = response.StatusCode;
Stream dataStream = response.GetResponseStream();
StreamReader reader = new StreamReader(dataStream);
sResponse = reader.ReadToEnd();
Console.WriteLine(sResponse);
Console.WriteLine("Response Code: " + (int)statusCode + " - " + statusCode.ToString());

Answer 4

只是要挟StatusCode来int.

var statusNumber;
try {
   response = (HttpWebResponse)request.GetResponse();
   // This will have statii from 200 to 30x
   statusNumber = (int)response.StatusCode;
}
catch (WebException we) {
    // Statii 400 to 50x will be here
    statusNumber = (int)we.Response.StatusCode;
}