c# - httpwebrequest getresponse() 不返回任何内容，而 fiddler 显示内容

Question

我创建了 GetCourses() 方法，其中使用 HttpWebRequest 从显示的 Url 请求数据。如果我将 url 复制粘贴到浏览器中，浏览器将显示 xml 数据。我还使用 fiddler 来完成一些请求。在 fiddler 上它说数据已编码，我必须对其进行解码。因此，我单击了“解码”，就可以看到 XML。但是，使用下面的代码我得到 Content-Length=-1。

public static void GetCourses()
    {
        try
        {
            HttpWebRequest requestForItCourse =
               (HttpWebRequest)WebRequest.Create("http://www.mnsu.edu/schedule/direct.php?action=courses&term=20135&subject=it");
            requestForItCourse.AutomaticDecompression = DecompressionMethods.GZip|DecompressionMethods.Deflate;
            HttpWebResponse responseFromMnsuDirectPhp =
                (HttpWebResponse)requestForItCourse.GetResponse();

            Stream dataStream = responseFromMnsuDirectPhp.GetResponseStream();
            responseFromMnsuDirectPhp.Close();
//Parse and insert courses into the database
        }
        catch (Exception ex)
        {

        }
    }

Answer 1

您需要在关闭响应之前读取响应流。

试试这个:

HttpWebRequest requestForItCourse = (HttpWebRequest)WebRequest.Create("http://www.mnsu.edu/schedule/direct.php?action=courses&term=20135&subject=it");
requestForItCourse.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
HttpWebResponse responseFromMnsuDirectPhp = (HttpWebResponse)requestForItCourse.GetResponse();

StreamReader dataStream = new StreamReader(responseFromMnsuDirectPhp.GetResponseStream());
string data = dataStream.ReadToEnd();

responseFromMnsuDirectPhp.Close();
dataStream.Close();