C# 利用代理爬虫网页的实现方法

// yanggang@mimvp.com
// http://proxy.mimvp.com
// 2015-11-09
 
using System;
using System.IO;
using System.Net;
using System.Text;
 
namespace ConsoleApplication1
{
  class Program
  {
    public static void Main(string[] args)
    {
      System.Net.WebProxy proxy = new WebProxy("218.21.230.156", 443);    // "107.150.96.188", 8080
      HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://proxy.mimvp.com");
      request.Proxy = proxy;
      using (WebResponse response = request.GetResponse())
      {
        using (TextReader reader = new StreamReader(response.GetResponseStream()))
        {
          string line;
          while ((line = reader.ReadLine()) != null)
            Console.WriteLine(line);
        }
      }
    }
 
    public static void Main2()
    {
      // your code goes here
      System.Net.WebProxy proxy = new WebProxy("107.150.96.188", 8080);
      System.Net.HttpWebRequest req = (HttpWebRequest)WebRequest.Create("http://www.baidu.com");
      req.Proxy = proxy;
      req.Timeout = 30 * 1000;
      System.Net.HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
      Encoding bin = Encoding.GetEncoding("UTF-8");
      StreamReader reader = new StreamReader(resp.GetResponseStream(), bin);
      string str = reader.ReadToEnd();
      Console.WriteLine(str);
     
      reader.Close();
      reader.Dispose();
    }
  }
}