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基于WebClient实现Http协议的Post与Get对网站进行模拟登陆和浏览实例

时间：2020-06-24 16:08 编辑：来源：阅读：
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摘要：基于WebClient实现Http协议的Post与Get对网站进行模拟登陆和浏览实例

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： [b]一、问题：[/b] 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。 [b]二、解决方法：[/b] 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：

[u]复制代码[/u] 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。

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