winform通过HttpWebRequest(post方式)上传文件和传递参数

winform通过HttpWebRequest（post方式）上传文件和传递参数

1private void button1_Click(object sender, EventArgs e)

2 {

3 UploadFileHttpRequest(AppDomain.CurrentDomain.BaseDirectory. Trim() + "bb.txt");

4 }

5private string UploadFileHttpRequest(string fileName)

6 {

7string output = string.Empty;

8 MemoryStream postStream = null;

9 BinaryWriter postWriter = null;

10 HttpWebResponse response = null;

11 StreamReader responseStream = null;

12

13const string CONTENT_BOUNDARY = "----------

ae0cH2cH2GI3Ef1KM7GI3Ij5cH2gL6";

14const string CONTENT_BOUNDARY_PREFIX = "--";

15

16try

17 {

18 UriBuilder uriBuilder = new UriBuilder("http://localhost:7408/ WebT/t.aspx");

19 HttpWebRequest request = (HttpWebRequest)WebRequest.Cre ate(uriBuilder.Uri);

20 https://www.360docs.net/doc/606688266.html,erAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Wind ows NT 5.2; SV1; Maxthon; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";

21 request.Timeout = 300000;

22 request.ContentType = "multipart/form-

data; boundary=" + CONTENT_BOUNDARY;

23 postStream = new MemoryStream();

24 postWriter = new BinaryWriter(postStream);

25//-- 参数

26 //param['setType']

27 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes(C ONTENT_BOUNDARY_PREFIX + CONTENT_BOUNDARY + "\r\n" +

28"Content-Disposition: form-

data; name=\"param['setType']\" \r\n\r\n"));

29 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes(" 2"));

30 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes("\

r\n"));

31//param['startTime']

32 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes(C ONTENT_BOUNDARY_PREFIX + CONTENT_BOUNDARY + "\r\n" +

33"Content-Disposition: form-

data; name=\"param['startTime']\" \r\n\r\n"));

34 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes("" ));

35 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes("\ r\n"));

36//param['endTime']

37 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes(C ONTENT_BOUNDARY_PREFIX + CONTENT_BOUNDARY + "\r\n" +

38"Content-Disposition: form-

data; name=\"param['endTime']\" \r\n\r\n"));

39 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes("" ));

40 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes("\ r\n"));

41//param['resourceID']

42 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes(C ONTENT_BOUNDARY_PREFIX + CONTENT_BOUNDARY + "\r\n" +

43"Content-Disposition: form-

data; name=\"param['resourceID']\" \r\n\r\n"));

44 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes(" 1398130"));

45 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes("\ r\n"));

46//forwardUrl

47 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes(C ONTENT_BOUNDARY_PREFIX + CONTENT_BOUNDARY + "\r\n" +

48"Content-Disposition: form-

data; name=\"forwardUrl\" \r\n\r\n"));

49 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes("/ cs/showBatchToneInfoStart.action"));

50 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes("\ r\n"));

51//uploadFiles

52 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes(C ONTENT_BOUNDARY_PREFIX + CONTENT_BOUNDARY + "\r\n" +

53"Content-Disposition: form-

data; name=\"uploadFiles\" \r\n\r\n"));

54 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes(fil eName));

55 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes("\ r\n"));

56byte[] fileContent = File.ReadAllBytes(fileName);

57 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes(C ONTENT_BOUNDARY_PREFIX + CONTENT_BOUNDARY + "\r\n" +

58"Content-Disposition: form-data; name=\"FileContent\" " +

59"filename=\"" + Path.GetFileName(fileName) + "\"\r\n\r\n"));

60 postWriter.Write(fileContent);

61 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes("\ r\n"));

62 postWriter.Write(Encoding.GetEncoding("gb2312").GetBytes(C ONTENT_BOUNDARY_PREFIX + CONTENT_BOUNDARY + "--"));

63

64 request.ContentLength = postStream.Length;

65 request.Method = "POST";

66 Stream requestStream = request.GetRequestStream();

67 postStream.WriteTo(requestStream);

68 response = (HttpWebResponse)request.GetResponse();

69

70for (int i = 0; i < response.Headers.Count; i++)

71 {

72 output += response.Headers.Keys[i] + ": " + response.Get ResponseHeader(response.Headers.Keys[i]) + "\r\n";

73 }

74 Encoding enc = Encoding.GetEncoding("gb2312");

75

76try

77 {

78if (response.ContentEncoding.Length > 0) enc = Encoding.G etEncoding(response.ContentEncoding);

79 }

80catch { }

81 responseStream = new StreamReader(response.GetResponseS tream(), enc);

82 output += "\r\n\r\n\r\n" + responseStream.ReadToEnd();

83 }

84finally

85 {

86if (postWriter != null) postWriter.Close();

87if (postStream != null)

88 {

89 postStream.Close();

90 postStream.Dispose();

91 }

92if (response != null) response.Close(); 93if (responseStream != null)

94 {

95 responseStream.Close();

96 responseStream.Dispose();

97 }

98 }

99return output;

100 }