1 using System;
2 using System.Collections.Specialized;
3 using System.IO;
4 using System.Net;
5 using System.Text;
6
7 namespace Allyn.Common
8 {
9 public class HttpHelper
10 {
11 /// <summary>
12 /// 获取指定路径数据
13 /// </summary>
14 /// <param name="requestUri">提交路径</param>
15 /// <param name="cookie">Cookie容器对象</param>
16 /// <returns>字符串结果</returns>
17 public static string GetForm(string requestUri, CookieContainer cookie)
18 {
19 HttpWebRequest request = WebRequest.CreateHttp(requestUri);
20 request.Method = "get";
21 request.CookieContainer = cookie;
22 request.ContentLength = 0;
23
24 WebResponse response = request.GetResponse();
25 StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
26 return reader.ReadToEnd();
27 }
28
29 /// <summary>
30 /// 默认表单提交
31 /// </summary>
32 /// <param name="requestUri">提交路径</param>
33 /// <param name="postData">提交数据</param>
34 /// <param name="cookie">Cookie容器对象</param>
35 /// <returns>字符串结果</returns>
36 public static string PostForm(string requestUri, NameValueCollection postData, CookieContainer cookie)
37 {
38 HttpWebRequest request = WebRequest.CreateHttp(requestUri);
39 request.Method = "post";
40 request.ContentType = "application/x-www-form-urlencoded";
41 request.CookieContainer = cookie;
42
43 StringBuilder stringBuilder = new StringBuilder();
44 foreach (string key in postData.Keys)
45 {
46 stringBuilder.AppendFormat("&{0}={1}", key, postData.Get(key));
47 }
48 byte[] buffer = Encoding.UTF8.GetBytes(stringBuilder.ToString().Trim('&'));
49 Stream requestStream = request.GetRequestStream();
50 requestStream.Write(buffer, 0, buffer.Length);
51 requestStream.Close();
52
53 WebResponse response = request.GetResponse();
54 StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
55 return reader.ReadToEnd();
56 }
57
58 /// <summary>
59 /// 多部件表单提交
60 /// </summary>
61 /// <param name="requestUri">提交路径</param>
62 /// <param name="postData">提交数据.注:如果是文件路径,代表是文件.</param>
63 /// <param name="cookie">Cookie容器对象</param>
64 /// <returns>字符串结果</returns>
65 public static string PostFormMultipart(string requestUri, NameValueCollection postData, CookieContainer cookie)
66 {
67 string boundary = string.Format("-----{0}", DateTime.Now.Ticks.ToString("x"));
68 HttpWebRequest webrequest = WebRequest.CreateHttp(requestUri);
69 webrequest.CookieContainer = cookie;
70 webrequest.Timeout = 120000;
71 webrequest.Method = "post";
72 webrequest.ContentType = string.Format("multipart/form-data; boundary={0}", boundary);
73
74 Stream requestStream = webrequest.GetRequestStream();
75 foreach (string key in postData.Keys)
76 {
77 StringBuilder strBuilder = new StringBuilder();
78 strBuilder.AppendFormat("--{0}", boundary);
79 strBuilder.AppendFormat("\r\nContent-Disposition: form-data; name=\"{0}\"", key);
80 if (File.Exists(postData.Get(key)))
81 {
82 strBuilder.AppendFormat(";filename=\"{0}\"\r\nContent-Type: multipart/form-data\r\n\r\n", Path.GetFileName(postData.Get(key)));
83 byte[] buffer = Encoding.UTF8.GetBytes(strBuilder.ToString());
84 requestStream.Write(buffer, 0, buffer.Length);
85 //获取图片流
86 FileStream fileStream = new FileStream(postData.Get(key), FileMode.Open, FileAccess.Read);
87 BinaryReader binaryReader = new BinaryReader(fileStream);
88 byte[] fileBuffer = binaryReader.ReadBytes((int)fileStream.Length);
89 binaryReader.Close();
90 fileStream.Close();
91 requestStream.Write(fileBuffer, 0, fileBuffer.Length);
92 }
93 else
94 {
95 strBuilder.AppendFormat("\r\n\r\n{0}\r\n", postData.Get(key));
96 byte[] buff = Encoding.UTF8.GetBytes(strBuilder.ToString());
97 requestStream.Write(buff, 0, buff.Length);
98 }
99 }
100
101 byte[] boundaryBuffer = Encoding.UTF8.GetBytes(string.Format("\r\n--{0}\r\n", boundary));
102 requestStream.Write(boundaryBuffer, 0, boundaryBuffer.Length);
103 requestStream.Close();
104
105 WebResponse response = webrequest.GetResponse();
106 StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
107 return reader.ReadToEnd();
108 }
109 }
110 }
