本文实例讲述了基于WebClient实现Http协议的Post与Get对网站进行模拟登陆和浏览的方法。分享给大家供大家参考。具体分析如下：

	一、问题：

	我们在一些场合经常需要模拟浏览器进行一些操作，比如模拟投票，或者模拟点击，或者Web游戏外挂。

	二、解决方法：

	C#中封装好的WebClient可以在某些要求不算高的场景实现Http的Post和Get。具体请见如下代码：

	复制代码 代码如下:

	using System;

	using System.Collections.Generic;

	using System.Linq;

	using System.Text;

	using System.Net;
	

		 
	

		namespace TestCNM

		{

		    public class WebClientExt

		    {

		        public string Get(string Url,string Referer, Encoding Encoder,ref string CookieStr)

		        {

		            string result = "";

		 

		            WebClient myClient = new WebClient();

		            myClient.Headers.Add("Accept: */*");

		            myClient.Headers.Add("User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET4.0E; .NET4.0C; InfoPath.2; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; SE 2.X MetaSr 1.0)");

		            myClient.Headers.Add("Accept-Language: zh-cn");

		            myClient.Headers.Add("Content-Type: multipart/form-data");

		            myClient.Headers.Add("Accept-Encoding: gzip, deflate");

		            myClient.Headers.Add("Cache-Control: no-cache");

		            if (CookieStr != "")

		            {

		                myClient.Headers.Add(CookieStr);

		            }

		            myClient.Encoding = Encoder;

		            result = myClient.DownloadString(Url);

		            if (CookieStr == "")

		            {

		                CookieStr = myClient.ResponseHeaders["Set-Cookie"].ToString();

		                CookieStr = GetCookie(CookieStr);

		            }

		            return result;

		        }

		        public string Post(string Url, string Referer, Encoding Encoder, ref string CookieStr, string Data)

		        {

		            string result = "";

		 

		            WebClient myClient = new WebClient();

		            myClient.Headers.Add("Accept: */*");

		            myClient.Headers.Add("User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET4.0E; .NET4.0C; InfoPath.2; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; SE 2.X MetaSr 1.0)");

		            myClient.Headers.Add("Accept-Language: zh-cn");

		            myClient.Headers.Add("Content-Type: multipart/form-data");

		            myClient.Headers.Add("Accept-Encoding: gzip, deflate");

		            myClient.Headers.Add("Cache-Control: no-cache");

		            if (CookieStr != "")

		            {

		                myClient.Headers.Add(CookieStr);

		            }

		            myClient.Encoding = Encoder;

		            result = myClient.UploadString(Url, Data);

		            if (CookieStr == "")

		            {

		                CookieStr = myClient.ResponseHeaders["Set-Cookie"].ToString();

		                CookieStr = GetCookie(CookieStr);

		            }

		            return result;

		        }

		        private string GetCookie(string CookieStr)

		        {

		            string result = "";

		 

		            string[] myArray = CookieStr.Split(',');

		            if (myArray.Count() > 0)

		            {

		                result = "Cookie: ";

		                foreach (var str in myArray)

		                {

		                    string[] CookieArray = str.Split(';');

		                    result += CookieArray[0].Trim();

		                    result += "; ";

		                }

		                result = result.Substring(0, result.Length - 2);

		            }

		            return result;

		        }

		    }

		}


	 

	希望本文所述对大家的C#程序设计有所帮助。