从URL请求数据时,我收到403错误。这是预期的,我不会问如何纠正它
将此URL直接粘贴到我的浏览器中时,我会获得一个基本信息字符串,用于描述拒绝权限的原因。
我需要通过我的C#代码读取此基本错误消息,但是当发出请求时,System.Net.WebException(“远程服务器返回错误:(403)Forbidden。”)抛出错误,并且响应正文我无法使用。
是否可以简单地抓取页面内容而不抛出异常? 相关的代码几乎是你所期望的,但无论如何它都在这里。
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(sPageURL);
try
{
//The exception is throw at the line below.
HttpWebResponse response = (HttpWebResponse)(request.GetResponse());
//Snipped processing of the response.
}
catch(Exception ex)
{
//Snipped logging.
}
任何帮助将不胜感激。感谢。
答案 0 :(得分:29)
您正在寻找WebException.Response
财产:
catch(WebException ex)
{
var response = (HttpWebResponse)ex.Response;
}
答案 1 :(得分:3)
这对我有用..
HttpWebResponse httpResponse;
try
{
httpResponse = (HttpWebResponse)httpReq.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
result = streamReader.ReadToEnd();
}
}
catch (WebException e)
{
Console.WriteLine("This program is expected to throw WebException on successful run." +
"\n\nException Message :" + e.Message);
if (e.Status == WebExceptionStatus.ProtocolError)
{
Console.WriteLine("Status Code : {0}", ((HttpWebResponse)e.Response).StatusCode);
Console.WriteLine("Status Description : {0}", ((HttpWebResponse)e.Response).StatusDescription);
using (Stream data = e.Response.GetResponseStream())
using (var reader = new StreamReader(data))
{
string text = reader.ReadToEnd();
Console.WriteLine(text);
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}