<link href="~/Content/uploadify/uploadify.css" rel="stylesheet" />

<script src="~/Content/uploadify/jquery.uploadify.js"></script>

<script type="text/javascript">

$(function () {

    $('#btn_upload').uploadify({

        uploader: '/home/upload',            // 服务器处理地址

        swf: '/Content/uploadify/uploadify.swf',

        buttonText: "上传文件",                  //按钮文字

        height: ,                             //按钮高度

        width: ,                              //按钮宽度

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

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

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

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

            var data = $.parseJSON(data);

            $("#photo").attr("src",data.imgpath);

            //alert(data.imgpath);

        }

    });

});

</script>

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

<br />

<img id="photo" src="http://www.yxweb.com.cn/images/upphoto.gif" alt="请上传工作照" />

       public ActionResult Upload(HttpPostedFileBase Filedata)

        {

            // 没有文件上传，直接返回

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

            {

                return HttpNotFound();

            }

            //获取文件完整文件名(包含绝对路径)

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

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

            string fileMD5 = GetStreamMD5(Filedata.InputStream);

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

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

            string imgType = Request["imgType"];

            string virtualPath = "/";

            if (imgType == "normal")

            {

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

            }

            else

            {

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

            }

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

            //创建文件夹，保存文件

            string path = Path.GetDirectoryName(fullFileName);

            Directory.CreateDirectory(path);

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

            {

                Filedata.SaveAs(fullFileName);

            }

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

            return Json(data, JsonRequestBehavior.AllowGet);

            }

        /// <summary>

        /// 计算文件流的md5值

        /// </summary>

        /// <param name="stream">文件输入流</param>

        /// <returns></returns>

        public static String GetStreamMD5(Stream stream)

        {

            MD5 md5Hasher = new MD5CryptoServiceProvider();

            /*计算指定Stream对象的哈希值*/

            byte[] arrbytHashValue = md5Hasher.ComputeHash(stream);

            /*由以连字符分隔的十六进制对构成的String，其中每一对表示value中对应的元素；例如“F-2C-4A”*/

            string strHashData = System.BitConverter.ToString(arrbytHashValue).Replace("-", "");

            return strHashData;

        }