文章标题

c#中实现http请求响应

代码如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Net;
using System.IO;
using System.IO.Compression;
using System.Text.RegularExpressions;

namespace HttpRequest
{
class Program
{
//private static readonly string DefaultUserAgent = “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)”;
private static readonly string DefaultUserAgent = “Mozilla/4.0 (compatible; MSIE 6.00; Windows 2000”;

    private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)    {        return true; //总是接受         }    public static HttpWebResponse CreatePostHttpResponse(string url, IDictionary<string, string> parameters, Encoding charset)    {        HttpWebRequest request = null;        //HTTPSQ请求          ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);        request = WebRequest.Create(url) as HttpWebRequest;        request.ProtocolVersion = HttpVersion.Version10;        request.Method = "POST";        request.ContentType = "application/x-www-form-urlencoded";        request.UserAgent = DefaultUserAgent;        //如果需要POST数据             if (!(parameters == null || parameters.Count == 0))        {            StringBuilder buffer = new StringBuilder();            int i = 0;            foreach (string key in parameters.Keys)            {                if (i > 0)                {                    buffer.AppendFormat("&{0}={1}", key, parameters[key]);                }                else                {                    buffer.AppendFormat("{0}={1}", key, parameters[key]);                }                i++;            }            byte[] data = charset.GetBytes(buffer.ToString());            using (Stream stream = request.GetRequestStream())            {                stream.Write(data, 0, data.Length);            }        }        return request.GetResponse() as HttpWebResponse;    }    static void Main(string[] args)    {        string url = "http://127.0.0.1:8080/xiaojd/engine";        Encoding encoding = Encoding.GetEncoding("gbk");        IDictionary<string, string> parameters = new Dictionary<string, string>();        parameters.Add("authuser", "***");        //parameters.Add("authpass", "xiaojd.com");        //parameters.Add("orgkey", "root");        //parameters.Add("orgname", "root");        //HttpWebResponse response = Program.CreatePostHttpResponse(url, parameters, encoding);        //打印返回值          //Stream stream = response.GetResponseStream();   //获取响应的字符串流          //StreamReader sr = new StreamReader(stream,encoding); //创建一个stream读取流          //string html = sr.ReadToEnd();   //从头读到尾，放到字符串html          string html = HisInfoPost.EngineAnalysis.HtmlText(url, parameters, encoding);        Console.WriteLine(html);        Console.ReadLine();    }}

}