C井利用HttpWebRequest进行post请求的示例（HTTPS）

阅读数：59595

代码如下：

2. using System;
3. using System.Collections.Generic;
4. using System.Linq;
5. using System.Text;
6. using System.Net.Security;
7. using System.Security.Cryptography.X509Certificates;
8. using System.Net;
9. using System.IO;
10. using System.IO.Compression;
11. using System.Text.RegularExpressions;
13. namespace HttpWebRequestDemo
14. {
15. class Program
16. {
17. 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)”;
19. private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
20. {
21. return true; //总是接受
22. }
24. public static HttpWebResponse CreatePostHttpResponse(string url, IDictionary parameters,Encoding charset)
25. {
26. HttpWebRequest request = null;
27. //HTTPSQ请求
28. ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
29. request = WebRequest.Create(url) as HttpWebRequest;
30. request.ProtocolVersion = HttpVersion.Version10;
31. request.Method = “POST”;
32. request.ContentType = “application/x-www-form-urlencoded”;
33. request.UserAgent = DefaultUserAgent;
34. //假如需要POST数据
35. if (!(parameters == null || parameters.Count == 0))
36. {
37. StringBuilder buffer = new StringBuilder();
38. int i = 0;
39. foreach (string key in parameters.Keys)
40. {
41. if (i > 0)
42. {
43. buffer.AppendFormat(“&{0}={1}”, key, parameters[key]);
44. }
45. else
46. {
47. buffer.AppendFormat(“{0}={1}”, key, parameters[key]);
48. }
49. i++;
50. }
51. byte[] data = charset.GetBytes(buffer.ToString());
52. using (Stream stream = request.GetRequestStream())
53. {
54. stream.Write(data, 0, data.Length);
55. }
56. }
57. return request.GetResponse() as HttpWebResponse;
58. }
60. static void Main(string[] args)
61. {
62. string url = “https://192.168.1.101/httpOrg/create”;
63. Encoding encoding = Encoding.GetEncoding(“utf-8”);
64. IDictionary parameters = new Dictionary();
65. parameters.Add(“authuser”, “*****”);
66. parameters.Add(“authpass”, “*****”);
67. parameters.Add(“orgkey”,”*****”);
68. parameters.Add(“orgname”, “*****”);
69. HttpWebResponse response = Program.CreatePostHttpResponse(url,parameters,encoding);
70. //打印返回值
71. Stream stream = response.GetResponseStream(); //获取响应的字符串流
72. StreamReader sr = new StreamReader(stream); //创立一个stream读取流
73. string html = sr.ReadToEnd(); //从头读到尾，放到字符串html
74. Console.WriteLine(html);
75. }
76. }
77. }

HttpWebRequest默认会用代理商进行连接，导致获取结果比较慢。处理办法是，配置：

request.Proxy = null;

不使用代理商，就可。