(400)在本地主机上运行asp.net站点的错误请求错误 [英] (400) Bad Request error running asp.net site at local host

问题描述

嗨
我设计了一个用于Facebook数据访问的网站.我在localhost:4999端口访问页面时加载页面时出现错误.

Hi
I designed a website for facebook data access. I am getting an error when the page loads while i was accessing it at localhost:4999 port.

public class FacebookLoginHelper
   {
       public Dictionary<string,> GetAccessToken(string code, string scope,string  redirectUrl)
       {
           Dictionary<string,> tokens = new Dictionary<string,>();
           string clientId = FacebookApplication.Current.AppId;
               //FacebookContext.Current.AppId;
           string clientSecret = FacebookApplication.Current.AppSecret;
           string url = string.Format("https://graph.facebook.com/oauth/access_token?client_id={0}&redirect_uri={1}&client_secret={2}&code={3}&scope={4}",
                           clientId, redirectUrl, clientSecret, code, scope);
           HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
           using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
           {
               StreamReader reader = new StreamReader(response.GetResponseStream());
               string retVal = reader.ReadToEnd();

               foreach (string token in retVal.Split('&'))
               {
                   tokens.Add(token.Substring(0, token.IndexOf("=")),
                       token.Substring(token.IndexOf("=") + 1, token.Length - token.IndexOf("=") - 1));
               }
           }
           return tokens;
       }
   }

现在它在行:
上显示错误400 使用(HttpWebResponse response = request.GetResponse()作为HttpWebResponse)

是什么原因 ?请帮帮我吗?

谢谢

Now it shows error 400 at line :
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)

What is the reason ? Please help me out ?

Thanks

推荐答案

将您遇到错误的行放在try-catch块中，看看调试时遇到的异常是什么.

Place the line which you are having an error in a try-catch block and see what is the exception you are getting while debugging it.

WebRequest request = WebRequest.Create("url");         
try         
{             
  using (WebResponse response = request.GetResponse())
  {
    Console.WriteLine("Won't get here");
  }
}
catch (WebException e)
{
  using (WebResponse response = e.Response)
  {
    HttpWebResponse httpResponse = (HttpWebResponse) response;
    Console.WriteLine("Error code: {0}", httpResponse.StatusCode);
    using (Stream data = response.GetResponseStream())
    {
       string text = new StreamReader(data).ReadToEnd();
       Console.WriteLine(text);
    }
  }
}

这篇关于(400)在本地主机上运行asp.net站点的错误请求错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！