1：上传文件实例
public void UploadXMLLog(string xmlpath) { NameValueCollection nvc = new NameValueCollection(); CookieContainer cookies = new CookieContainer(); nvc.Add("", “”); ...... string url = "UrlPath"; string res = UploadFile(xmlpath, url, nvc, cookies); }
2：UploadFile源码
1 public string UploadFile(string uploadfile, string url, NameValueCollection querystring, CookieContainer cookies, string fileFormName = "file", string contenttype = "multipart/form-data")
2 {
3 if ((fileFormName == null) ||
4 (fileFormName.Length == 0))
5 {
6 fileFormName = "file";
7 }
8
9 if ((contenttype == null) ||
10 (contenttype.Length == 0))
11 {
12 contenttype = "application/octet-stream";
13 }
14 Uri uri = new Uri(url);
15 string boundary = "----------" + DateTime.Now.Ticks.ToString("x");
16 HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(uri);
17 webrequest.CookieContainer = cookies;
18 webrequest.ContentType = "multipart/form-data; boundary=" + boundary;
19 webrequest.Method = "POST";
20 StringBuilder sb = new StringBuilder();
21 sb.Append("--");
22 sb.Append(boundary);
23 sb.Append("\r\n");
24 sb.Append("Content-Disposition: form-data; name=\"");
25 sb.Append(fileFormName);
26 sb.Append("\"; filename=\"");
27 sb.Append(uploadfile);
28 sb.Append("\"");
29 sb.Append("\r\n");
30 sb.Append("Content-Type: ");
31 sb.Append(contenttype);
32 sb.Append("\r\n");
33 sb.Append("\r\n");
34
35 string postHeader = sb.ToString();
36 byte[] postHeaderBytes = Encoding.UTF8.GetBytes(postHeader);
37 byte[] boundaryBytes = Encoding.ASCII.GetBytes("--" + boundary + "\r\n");
38 byte[] br = Encoding.ASCII.GetBytes("\r\n");
39 FileStream fileStream = new FileStream(uploadfile, FileMode.Open, FileAccess.Read);
40 long length = postHeaderBytes.Length + fileStream.Length + br.Length;
41 if (querystring != null)
42 {
43
44 StringBuilder sub = new StringBuilder();
45 foreach (string key in querystring.Keys)
46 {
47 sub.Append("--");
48 sub.Append(boundary);
49 sub.Append("\r\n");
50 sub.Append("Content-Disposition: form-data; name=\"");
51 sub.Append(key);
52 sub.Append("\"");
53 sub.Append("\r\n");
54 sub.Append("\r\n");
55 sub.Append(querystring[key]);
56 sub.Append("\r\n");
57 byte[] formitembytes = Encoding.UTF8.GetBytes(sub.ToString());
58 length += formitembytes.Length;
59 }
60 }
61 length += boundaryBytes.Length;
62 webrequest.ContentLength = length;
63 Stream requestStream = webrequest.GetRequestStream();
64 // Write out our post header
65 requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
66
67 // Write out the file contents
68 byte[] buffer = new Byte[checked((uint)Math.Min(4096, (int)fileStream.Length))];
69 int bytesRead = 0;
70 while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
71 requestStream.Write(buffer, 0, bytesRead);
72 requestStream.Write(br, 0, br.Length);
73 if (querystring != null)
74 {
75 StringBuilder sub = new StringBuilder();
76 foreach (string key in querystring.Keys)
77 {
78 sub.Append("--");
79 sub.Append(boundary);
80 sub.Append("\r\n");
81 sub.Append("Content-Disposition: form-data; name=\"");
82 sub.Append(key);
83 sub.Append("\"");
84 sub.Append("\r\n");
85 sub.Append("\r\n");
86 sub.Append(querystring[key]);
87 sub.Append("\r\n");
88 byte[] formitembytes = Encoding.UTF8.GetBytes(sub.ToString());
89 requestStream.Write(formitembytes, 0, formitembytes.Length);
90 }
91 }
92 // Write out the trailing boundary
93 requestStream.Write(boundaryBytes, 0, boundaryBytes.Length);
94 webrequest.Timeout = 1000000;
95
96 WebResponse responce = webrequest.GetResponse();
97
98 Stream s = responce.GetResponseStream();
99
100 StreamReader sr = new StreamReader(s);
101
102 string str = sr.ReadToEnd();
103
104
105 fileStream.Close();
106
107 requestStream.Close();
108
109 sr.Close();
110
111 s.Close();
112
113 responce.Close();
114
115 return str;
116
117 }