Get和Post

  1 using System;
  2 using System.Collections.Generic;
  3 using System.IO;
  4 using System.Linq;
  5 using System.Net;
  6 using System.Net.Security;
  7 using System.Security.Cryptography.X509Certificates;
  8 using System.Text;
  9 using System.Web;
 10 
 11 namespace SAO.Web.MyWebRequest
 12 {
 13     public class HttpHelper
 14     {
 15         public static string ticket { get; set; } //该属性是用来获取令牌用的
 16 
 17 
 18         /// <summary>
 19         /// 获取请求结果
 20         /// </summary>
 21         /// <returns></returns>
 22         public static string GetHttpResult(HttpWebResponse response)
 23         {
 24             string result = string.Empty;
 25             using (Stream stream=response.GetResponseStream())
 26             {
 27                 using (StreamReader reader=new StreamReader(stream,Encoding.UTF8))
 28                 {
 29                     result = reader.ReadToEnd();
 30                 }
 31             }
 32             return result;
 33         }
 34 
 35         /// <summary>  
 36         /// 创建GET方式的HTTP请求  
 37         /// </summary>  
 38         public static HttpWebResponse GetHttpResponse(string url, int timeout, string userAgent, CookieCollection cookies)
 39         {
 40             HttpWebRequest request = null;
 41             request.Method = "GET";
 42            
 43             if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
 44             {
 45                 //对服务端证书进行有效性校验（非第三方权威机构颁发的证书，如自己生成的，不进行验证，这里返回true）
 46                 ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
 47                 request = WebRequest.Create(url) as HttpWebRequest;
 48                 request.ProtocolVersion = HttpVersion.Version10;    //http版本，默认是1.1,这里设置为1.0
 49             }
 50             else
 51             {
 52                 request = WebRequest.Create(url) as HttpWebRequest;
 53             }
 54 
 55             //设置代理UserAgent和超时
 56             request.Accept = "";
 57             request.Timeout = timeout;
 58             request.UserAgent = userAgent;
 59 
 60             //注：如果要调用WebApi，则需要在请求头增加一个属性来进行Basic认证
 61             request.Headers.Add(HttpRequestHeader.Authorization, "BasicAuth " + ticket);
 62           
 63             if (cookies != null)
 64             {
 65                 request.CookieContainer = new CookieContainer();
 66                 request.CookieContainer.Add(cookies);
 67             }
 68             return request.GetResponse() as HttpWebResponse;
 69         }
 70 
 71         /// <summary>  
 72         /// 创建POST方式的HTTP请求  
 73         /// </summary>  
 74         public static HttpWebResponse PostHttpResponse(string url, IDictionary<string, string> parameters, int timeout, string userAgent, CookieCollection cookies)
 75         {
 76             HttpWebRequest request = null;
 77             //如果是发送HTTPS请求  
 78             if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
 79             {
 80                 //ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
 81                 request = WebRequest.Create(url) as HttpWebRequest;
 82                 //request.ProtocolVersion = HttpVersion.Version10;
 83             }
 84             else
 85             {
 86                 request = WebRequest.Create(url) as HttpWebRequest;
 87             }
 88             request.Method = "POST";
 89             request.ContentType = "application/x-www-form-urlencoded";
 90 
 91             //设置代理UserAgent和超时
 92             request.UserAgent = userAgent;
 93             request.Timeout = timeout; 
 94 
 95             if (cookies != null)
 96             {
 97                 request.CookieContainer = new CookieContainer();
 98                 request.CookieContainer.Add(cookies);
 99             }
100             //发送POST数据  
101             if (!(parameters == null || parameters.Count == 0))
102             {
103                 StringBuilder buffer = new StringBuilder();
104                 int i = 0;
105                 foreach (string key in parameters.Keys)
106                 {
107                     if (i > 0)
108                     {
109                         buffer.AppendFormat("&{0}={1}", key, parameters[key]);
110                     }
111                     else
112                     {
113                         buffer.AppendFormat("{0}={1}", key, parameters[key]);
114                         i++;
115                     }
116                 }
117                 byte[] data = Encoding.ASCII.GetBytes(buffer.ToString());
118                 using (Stream stream = request.GetRequestStream())
119                 {
120                     stream.Write(data, 0, data.Length);
121                 }
122             }
123             string[] values = request.Headers.GetValues("Content-Type");
124             return request.GetResponse() as HttpWebResponse;
125         }
126 
127 
128         /// <summary>
129         /// 验证证书
130         /// </summary>
131         private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
132         {
133             if (errors == SslPolicyErrors.None)
134                 return true;
135             return false;
136         }
137     }
138 }