1   public ActionResult Upload(HttpPostedFileBase Filedata)

 2         {

 3             // 没有文件上传，直接返回

 4             if (Filedata == null || string.IsNullOrEmpty(Filedata.FileName) || Filedata.ContentLength == 0)

 5             {

 6                 return HttpNotFound();

 7             }

 8

 9             //获取文件完整文件名(包含绝对路径)

10             //文件存放路径格式：/files/upload/{日期}/{md5}.{后缀名}

11             //例如：/files/upload/20130913/43CA215D947F8C1F1DDFCED383C4D706.jpg

12             string fileMD5 = GetMD5HashFromStream(Filedata.InputStream);

13             string FileEextension = Path.GetExtension(Filedata.FileName);

14             string uploadDate = DateTime.Now.ToString("yyyyMMdd");

15

16             string imgType = Request["imgType"];

17             string virtualPath = "/";

18             if (imgType == "normal")

19             {

20                 virtualPath = string.Format("~/files/upload/{0}/{1}{2}", uploadDate, fileMD5, FileEextension);

21             }

22             else

23             {

24                 virtualPath = string.Format("~/files/upload2/{0}/{1}{2}", uploadDate, fileMD5, FileEextension);

25             }

26             string fullFileName = this.Server.MapPath(virtualPath);

27

28             //创建文件夹，保存文件

29             string path = Path.GetDirectoryName(fullFileName);

30             Directory.CreateDirectory(path);

31             if (!System.IO.File.Exists(fullFileName))

32             {

33                 Filedata.SaveAs(fullFileName);

34             }

35

36             var data = new { imgtype = imgType, imgpath = virtualPath.Remove(0, 1) };

37             return Json(data, JsonRequestBehavior.AllowGet);

38         }

39

40         private static string GetMD5HashFromStream(Stream stream)

41         {

42             try

43             {

44                 System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();

45                 byte[] retVal = md5.ComputeHash(stream);

46                 StringBuilder sb = new StringBuilder();

47                 for (int i = 0; i < retVal.Length; i++)

48                 {

49                     sb.Append(retVal[i].ToString("X2"));

50                 }

51                 return sb.ToString();

52             }

53             catch (Exception ex)

54             {

55                 return string.Empty;

56             }

57         }

58     }

 1 @{

 2     ViewBag.Title = "Index";

 3     Layout = "~/Views/Shared/_Layout.cshtml";

 4 }

 5

 6 <link href="~/Uploadify/uploadify.css" rel="stylesheet" type="text/css" />

 7 <script src="~/Scripts/jquery-1.7.1.min.js" type="text/javascript"></script>

 8 <script src="~/Uploadify/jquery.uploadify.min.js" type="text/javascript"></script>

 9 <h2>Index</h2>

10 <p></p>

11 <p></p>

12 <p></p>

13 <p></p>

14 <img src="" id="uploadimg" />

15

16 <span id="btn_upload"></span>

17 <script type="text/javascript">

18     $(function () {

19         $('#btn_upload').uploadify({

20             uploader: '/Home/Upload',            // 服务器处理地址

21             swf: '/Uploadify/uploadify.swf',

22             buttonText: "选择文件",                  //按钮文字

23             height: 34,                             //按钮高度

24             width: 82,                              //按钮宽度

25             fileTypeExts: "*.jpg;*.png;*.exe;",           //允许的文件类型

26             fileTypeDesc: "请选择图片文件",           //文件说明

27             formData: { "imgType": "normal" }, //提交给服务器端的参数

28             onUploadSuccess: function (file, data, response) {   //一个文件上传成功后的响应事件处理

29                 var data = $.parseJSON(data);

30                 $('#uploadimg').attr('src', data.imgpath);

31                 alert(data.imgpath);

32             }

33         });

34     });

35 </script>