如何在c#httpwebreqest ASP.NET中处理状态302重定向

时间:2013-03-20 15:54:58

标签: c# asp.net redirect httpwebrequest

这是我的代码:

   @{
        //string postString = "parameter=value";
        const string contentType = "application/x-www-form-urlencoded";
        System.Net.ServicePointManager.Expect100Continue = false;

        CookieContainer cookies = new CookieContainer();
        HttpWebRequest webRequest = WebRequest.Create("http://somehost:8080/myApp") as HttpWebRequest;
        webRequest.Method = "POST";
        webRequest.AllowAutoRedirect = false;
        webRequest.ContentType = contentType;
        webRequest.CookieContainer = cookies;
        webRequest.ContentLength = postString.Length;
        webRequest.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1";
        webRequest.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";

        StreamWriter requestWriter = new StreamWriter(webRequest.GetRequestStream());
        requestWriter.Write(postString);
        requestWriter.Close();

        HttpWebResponse resp = webRequest.GetResponse() as HttpWebResponse;
        string location = resp.Headers["Location"];
        Response.Redirect(location);
    }

来自http://somehost:8080/myApp的响应是302重定向到其他某个域。如果我使用webRequest.AllowAutoRedirect = true;并写回复(Response.Write(StreamReader(resp.GetResponseStream()).ReadToEnd())),则无法正确显示生成的html,因为无法解析具有相对链接的资源。

所以,我提出了这个解决方案,但我觉得这不正确。在我看来,我的解决方案有点像'hackaround'。

有更好的解决方案吗?

1 个答案:

答案 0 :(得分:0)

将您的相对网址更改为绝对

 url = objHttpWebResponse.Headers["Location"].ToString();
                        MessageBox.Show("Redirect To " + objHttpWebResponse.Headers["Location"]);
                        System.Threading.Thread.Sleep(2000);
                        Uri final = new Uri(new Uri(txtURL.Text), url);
                        string finalurl = final.AbsoluteUri;
                        download(finalurl);