HttpHelpers類普通GET和POST方式，帶Cookie和帶證書驗證模式

HttpHelpers類普通GET和POST方式，帶Cookie和帶證書驗證模式

參考路徑：https://www.cnblogs.com/splendidme/archive/2011/09/14/2175364.html

  1 /// <summary>
  2 /// 類說明：HttpHelps類，用來實現Http訪問，Post或者Get方式的，直接訪問，帶Cookie的，帶證書的等方式
  3 /// 編碼日期：2011-09-13
  4  
  5 /// </summary>using System;
  6 using System.Collections.Generic;
  7 using System.Linq;
  8 using System.Web;
  9 using System.Text;
 10 using System.Net;
 11 using System.IO;
 12 using System.Security.Cryptography.X509Certificates;
 13 using System.Net.Security;
 14 using System;
 15   
 16 /// <summary>
 17 ///HttpHelpers 主要是實現Http方式的Get和Post方式請求
 18 /// </summary>
 19 public class HttpHelpers
 20 {
 21     /// <summary>
 22     /// 構造器實現默認屬性的賦值
 23     /// </summary>
 24     public HttpHelpers()
 25     {
 26         //設置請求方式爲Post
 27         request.Method = "GET";
 28         request.Accept = "text/html, application/xhtml+xml, */*";
 29         request.ContentType = "application/x-www-form-urlencoded";
 30     }
 31   
 32     #region 全部的屬性
 33   
 34     //訪問的頁面地址
 35     private string RequestURl { get; set; }
 36   
 37     //默認的編碼
 38     private Encoding encoding { get; set; }
 39   
 40     //HttpWebRequest對象用來發起請求
 41     private HttpWebRequest request { get; set; }
 42   
 43     //獲取影響流的數據對象
 44     private HttpWebResponse response { get; set; }
 45   
 46     //證書文件X509Certificate objx509 = new X509Certificate(Application.StartupPath + "\\123.cer");
 47     X509Certificate objx509 { get; set; }
 48   
 49     //請求方式目前只提供Post和Get方式
 50     private string Method { get; set; }
 51   
 52     //Accept屬性
 53     private string Accept { get; set; }
 54   
 55     //ContentType屬性
 56     private string ContentType { get; set; }
 57   
 58     //UserAgent屬性
 59     private string UserAgent { get; set; }
 60   
 61     //Cookie列表
 62     private CookieContainer cookie { get; set; }
 63   
 64     //須要返回的數據對象
 65     private string reutrnDate { get; set; }
 66   
 67     //Post數據串
 68     private string strPostdata { get; set; }
 69   
 70     #endregion
 71   
 72     #region 內部方法
 73   
 74     //回調驗證證書問題
 75     private bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
 76     {
 77         // 老是接受    
 78         return true;
 79     }
 80   
 81     /// <summary>
 82     /// 根據相傳入的數據，獲得相應頁面數據
 83     /// </summary>
 84     /// <param name="strPostdata">傳入的數據Post方式,get方式傳NUll或者空字符串均可以</param>
 85     /// <returns>string類型的響應數據</returns>
 86     private string GetHttpRequestData()
 87     {
 88         try
 89         {
 90             //是否要添加證書驗證
 91             if (objx509 != null)
 92             {
 93                 //這一句必定要寫在建立鏈接的前面。使用回調的方法進行證書驗證。
 94                 ServicePointManager.ServerCertificateValidationCallback =
 95                     new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);
 96             }
 97   
 98             //建立request對象
 99             request = (HttpWebRequest)WebRequest.Create(RequestURl);
100   
101             //是否要添加證書驗證
102             if (objx509 != null)
103                 request.ClientCertificates.Add(objx509);
104   
105             //是否帶有Cookie值
106             if (cookie != null)
107                 request.CookieContainer = cookie;
108   
109             //當爲post提交是須要填充數據
110             if (Method.Trim().ToLower() == "post")
111             {
112                 byte[] buffer = encoding.GetBytes(strPostdata);
113                 request.ContentLength = buffer.Length;
114                 request.GetRequestStream().Write(buffer, 0, buffer.Length);
115             }
116   
117             //獲得請求的response
118             using (response = (HttpWebResponse)request.GetResponse())
119             {
120                 //從這裏開始咱們要無視編碼了
121                 if (encoding == null)
122                     GetEonding();
123   
124                 //開始讀取流並設置編碼方式
125                 using (StreamReader reader = new StreamReader(response.GetResponseStream(), encoding))
126                 {
127                     //從當前開始讀取整個流數據，默認爲0因此讀取的是所有，並返回數據
128                     reutrnDate = reader.ReadToEnd().ToString().Trim();
129                 }
130             }
131         }
132         catch (Exception)
133         {
134             //這裏是在發生異常時返回的錯誤信息
135             reutrnDate = "String Error";
136         }
137         return reutrnDate;
138     }
139   
140     /// <summary>
141     /// 獲得response對象的編碼類型
142     /// </summary>
143     private void GetEonding()
144     {
145         if (response.CharacterSet.Trim() != "")
146             encoding = System.Text.Encoding.GetEncoding(response.CharacterSet.Trim());
147         else
148             encoding = System.Text.Encoding.UTF8;
149     }
150   
151     #endregion
152   
153     #region 公開方法
154   
155     /// <summary>
156     /// 只設置一些簡單參數的方式
157     /// </summary>
158     /// <param name="_url">URl地址</param>
159     /// <param name="_strPostdata">Post請求方式時傳入的數據</param>
160     /// <param name="_Method">請求方式GET或者POST能夠爲空默認爲GET</param>
161     /// <param name="_encoding">編碼方式能夠爲空默認爲UTF-8</param>
162     /// <param name="_Accept">Accept屬性</param>
163     /// <param name="_ContentType">ContentType屬性</param
164     /// <param name="_UserAgent">UserAgent屬性</param
165     /// <param name="_cookie">CookieContainer列表</param
166     /// <param name="_objx509">X509Certificate證書對象</param
167     /// <returns>請求所獲得的數據</returns>
168     public string GetString_null(string _url, string _strPostdata, string _Method, Encoding _encoding, string _Accept,
169         string _ContentType, string _UserAgent, CookieContainer _cookie, X509Certificate _objx509)
170     {
171         RequestURl = _url;
172         Method = _Method;
173         encoding = _encoding;
174         Accept = _Accept;
175         ContentType = _ContentType;
176         UserAgent = _UserAgent;
177         cookie = _cookie;
178         objx509 = _objx509;
179         return GetHttpRequestData();
180     }
181   
182     /// <summary>
183     /// 只設置一些簡單參數的方式
184     /// </summary>
185     /// <param name="_url">URl地址</param>
186     /// <param name="_strPostdata">Post請求方式時傳入的數據</param>
187     /// <param name="_Method">請求方式GET或者POST能夠爲空默認爲GET</param>
188     /// <param name="_encoding">編碼方式能夠爲空默認爲UTF-8</param>
189     /// <returns>請求所獲得的數據</returns>
190     public string GetString_type(string _url, string _Method, Encoding _encoding)
191     {
192         RequestURl = _url;
193         Method = _Method;
194         encoding = _encoding;
195         return GetHttpRequestData();
196     }
197   
198     //下面你們本身能夠多寫幾種經常使用的，呵呵
199   
200     #endregion
201   
202 }