Question

所以，这是我制作的一个场景，我正在创建自己的网络浏览器，我想确保我向网络服务器发送正确的POST文本。

要实现这一点，我需要在调用GetResponseStream()之前获取WebRequest为我创建的POST文本。

我尝试阅读来自WebRequest.GetRequestStream()的信息流，但我认为这不是一种方法。

我不希望从Web服务器响应纯HTML文本。我需要获得的POST文本必须如下所示：

POST http://www.some_web_server.com/default.aspx HTTP/1.1 
Cache-Control : max-age=0 Connection : keep-alive .....

提前致谢。

[UPDATE]

很明显，我已经在我的WebRequest实例中提供了所有已发布的请求（POST）文本。

有没有方便地从中获取整个纯文本，而不是使用ContentType或Headers等分离的get属性？

（因为我懒得将我指定的所有标题组合到整个完整的POST文本中，哪个Web服务器最终会看到。）

// This might be a very poor code to approach.

public void Show_Full_POST_Text(WebRequest req)
{
    // For example.
    String strRawText = req.GetRequestLiteral();

    // Your POST text looks like this!
    ShowToUser(strRawText);
}

public void Foo()
{
    // ...

    Show_Full_POST_Text(req);
    var ResponseStream = req.GetResponseStream();

    // Continue.
}

Answer 1

您的问题非常模糊，但是，我相信您正在寻找的内容包括Webrequest中的标题。 The MSDN has a good example。见下文：

public static void Main (string[] args)
{
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create (args[0]);

    // Set some reasonable limits on resources used by this request
    request.MaximumAutomaticRedirections = 4;
    request.MaximumResponseHeadersLength = 4; //This sets the max headers coming back to your response.
    // Set credentials to use for this request.
    request.Credentials = CredentialCache.DefaultCredentials;
    HttpWebResponse response = (HttpWebResponse)request.GetResponse ();

    Console.WriteLine ("Content length is {0}", response.ContentLength);
    Console.WriteLine ("Content type is {0}", response.ContentType);

    // Get the stream associated with the response.
    Stream receiveStream = response.GetResponseStream ();

    // Pipes the stream to a higher level stream reader with the required encoding format. 
    StreamReader readStream = new StreamReader (receiveStream, Encoding.UTF8);

    Console.WriteLine ("Response stream received.");
    Console.WriteLine (readStream.ReadToEnd ());
    response.Close ();
    readStream.Close ();
}

Answer 2

如果你说你不想通过请求属性获得一些标题，例如＆＃34; request.ContentType＆＃34;和其他通过标头集合，然后你可以使用标头集合，因为它已经包含ContentType的密钥。

using System;
using System.Collections.Generic;
using System.Net;

namespace Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://www.example.com");
            request.Method = "POST";
            request.ContentType = "image/png";

            Console.WriteLine(GetRequestAsString(request));
            Console.ReadKey();
        }

        public static string GetRequestAsString(HttpWebRequest request)
        {
            string str = request.Method + " " + request.RequestUri + " HTTP/" + request.ProtocolVersion + Environment.NewLine;
            string[] headerKeys = request.Headers.AllKeys;

            foreach (string key in headerKeys)
            {
                str += key + ":" + request.Headers[key];
            }

            return str;
        }
    }
}

如何从WebRequest获取流中的文本？

2 个答案: