在c#应用程序中打开此URL的正确方法

本文关键字：URL 方法 应用程序 | 更新日期: 2023-09-27 18:08:44

我有一个URL，我想在我的c#应用程序中打开。这个URL用于与通信设备交谈，而不是互联网网站。我想我已经通过了所有的认证。但是，当我使用web浏览器时，我在程序中返回的文本与正确显示的文本不同。

代码如下:

using System;
using System.IO;
using System.Net;
using System.Text;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Web;
namespace VMLConnStatus
    {
    class Program
        {
        static void Main(string[] args)
            {
            System.Net.ServicePointManager.CertificatePolicy = new MyPolicy();
            // Create a request for the URL: https://192.168.30.15/cgi-bin/connstatus?202
            String url = "https://192.168.30.15/cgi-bin/";
            String data = "connstatus?202";
            // Create a request using a URL that can receive a post. 
            WebRequest request = WebRequest.Create(url);
            // Set the Method property of the request to POST.
            request.Method = "POST";
            // Create POST data and convert it to a byte array.
            string postData = data;
            byte[] byteArray = Encoding.UTF8.GetBytes(postData);
            // Set the ContentType property of the WebRequest.
            request.ContentType = "application/x-www-form-urlencoded";
            // Set the ContentLength property of the WebRequest.
            request.ContentLength = byteArray.Length;
            // Get the request stream.
            Stream dataStream = request.GetRequestStream();
            // Write the data to the request stream.
            dataStream.Write(byteArray, 0, byteArray.Length);
            // Close the Stream object.
            dataStream.Close();
            // Get the response.
            WebResponse response = request.GetResponse();
            // Display the status.
            Console.WriteLine(((HttpWebResponse)response).StatusDescription);
            // Get the stream containing content returned by the server.
            dataStream = response.GetResponseStream();
            // Open the stream using a StreamReader for easy access.
            StreamReader reader = new StreamReader(dataStream);
            // Read the content.
            string responseFromServer = reader.ReadToEnd();
            // Display the content.
            Console.WriteLine(responseFromServer);
            // Clean up the streams.
            reader.Close();
            dataStream.Close();
            response.Close();
            Console.ReadLine();
            }
        }
    public class MyPolicy : ICertificatePolicy
        {
        public bool CheckValidationResult(ServicePoint srvPoint,
          X509Certificate certificate, WebRequest request,
          int certificateProblem)
            {
            //Return True to force the certificate to be accepted.
            return true;
            }
        }
    }

结果，虽然没有完美地显示在Chrome中，应该是:


NA NA

NA NA
4 c: cc: 34:02:6d:
26日00:23:A7:24: A3: B6

但是我在控制台窗口得到的文本是: 
Ok
<HTML>
<HEAD><TITLE>Index of cgi-bin/</TITLE></HEAD>
<BODY BGCOLOR="#99cc99" TEXT="#000000" LINK="#2020ff" VLINK="#4040cc">
<H4>Index of cgi-bin/</H4>
<PRE>
<A HREF=".">.                               </A>    15Jun2014 09:48
 0
<A HREF="..">..                              </A>    15Jun2014 09:48
  0
<A HREF="connstatus">connstatus                      </A>    15Jun2014 09:48
      19580
<A HREF="firmwarecfg">firmwarecfg                     </A>    15Jun2014 09:48
       45736
<A HREF="webcm">webcm                           </A>    15Jun2014 09:48
 23836
</PRE>
<HR>
<ADDRESS><A HREF="http://www.acme.com/software/mini_httpd/">mini_httpd/1.19 19de
c2003</A></ADDRESS>
</BODY>
</HTML>

根本不是一回事。

我做错了什么?

查克

UPDATE:代码已更改。URL、GET和请求写入(假设我理解了说明)。新代码为:

static void Main(string[] args)
    {
    System.Net.ServicePointManager.CertificatePolicy = new MyPolicy();
    // Create a request for the URL: https://192.168.30.15/cgi-bin/connstatus?202
    String url = "https://192.168.30.15/cgi-bin/connstatus?202";
    // Create a request using a URL that can receive a post. 
    WebRequest request = WebRequest.Create(url);
    // Set the Method property of the request to POST.
    request.Method = "GET";
    // Set the ContentType property of the WebRequest.
    request.ContentType = "application/x-www-form-urlencoded";
    // Get the request stream.
    //Now it throws an exception here--------------------------------
    //"Cannot send a content-body with this verb-type."
    Stream dataStream = request.GetRequestStream();
    // Close the Stream object.
    dataStream.Close();
    // Get the response.
    WebResponse response = request.GetResponse();
    // Display the status.
    Console.WriteLine(((HttpWebResponse)response).StatusDescription);
    // Get the stream containing content returned by the server.
    dataStream = response.GetResponseStream();
    // Open the stream using a StreamReader for easy access.
    StreamReader reader = new StreamReader(dataStream);
    // Read the content.
    string responseFromServer = reader.ReadToEnd();
    // Display the content.
    Console.WriteLine(responseFromServer);
    // Clean up the streams.
    reader.Close();
    dataStream.Close();
    response.Close();
    Console.ReadLine();
    }

在c#应用程序中打开此URL的正确方法

您正在使用http方法POST，但您在评论中的url看起来更像GET，因此您可能需要WebRequest.Create(url + data)。

错误的响应是https://192.168.30.15/cgi-bin/的索引页，如果你把它放到Chrome浏览器中，会给你同样的"错误"响应。

您可能不需要向请求流写入任何数据，并且可以更改请求的Method和ContentType。

解决方案需要两个部分。

首先，做正确的事情，从而重新编写代码。

我看到了可怕的"服务器违反了协议。"Section=ResponseHeader Detail=报头名称无效"。我试图为这项工作做出编程解决方案，但它是一个。net 2.0解决方案，我无法在。net 4+中找到它。所以，我编辑了。config文件，然后继续。

最后的代码是:

        //Initialization
        HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create(@"https://192.168.30.15/cgi-bin/connstatus?202");
        //method is GET.
        WebReq.Method = "GET";
        //Get the response handle
        HttpWebResponse WebResp = (HttpWebResponse)WebReq.GetResponse();
        //read the response
        Stream Answer = WebResp.GetResponseStream();
        StreamReader _Answer = new StreamReader(Answer);
        //display it
        Console.WriteLine(_Answer.ReadToEnd());
        //pause for the ENTER key
        Console.ReadLine();

这被添加到debug文件夹中的.config文件中(也会被添加到Release文件夹.....中)使用VS2013) 

<system.net>
<settings>
<httpWebRequest useUnsafeHeaderParsing = "true"/>
</settings>
</system.net>

感谢所有回复的人。灵感帮助我找到了解决方案。

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