uploadfy|ajax flash 上传插件

1.引用脚本样式
 <script src="/uploadify/jquery.uploadify.min.js"   type="text/javascript"></script>
 <link href="/uploadify/uploadify.css"   rel="stylesheet" type="text/css" />
2.添加file标签
 <input id="uploadImg" type="file" />
3.初始化

$("#uploadImg").uploadify({
                'swf': '/uploadify.swf',
                'checkExisting': false,
                'uploader': '/handler/UploadHandler.ashx',
                'cancelImage': '/uploadify/cancel.png',
                'buttonText': '请选择要上传的文件',
                'fileExt': '*.jpg;*.gif;*.png',
                'width': 150,
                'auto': true,
                'multi': false,
                'uploadLimit': 9999,
                'postData': { 'filepath': '/case/' },
                'onUploadSuccess': function (file, data, response) {
                    if (data) {
                        $("#imghead").attr("src", data);
                    }
                }
            });

 

4.服务器端
  

 public void ProcessRequest(HttpContext context)
    {

        string returnUrl = string.Empty;
        string filepath = context.Request.Form["filepath"];
        HttpPostedFile file = context.Request.Files["FileData"];
        if (file != null)
        {
            try
            {
                string fileName = DateTime.Now.ToString("yyyyMMddhhmmss");
                string extensionName = Path.GetExtension(file.FileName.Trim());
                string _path = string.Empty;
                DateTime _n = DateTime.Now;
                if (string.IsNullOrEmpty(filepath))
                    _path = "/uploadimg/" + _n.Year.ToString() + _n.Month.ToString() + _n.Day.ToString() + "/";
                else
                    _path = filepath + _n.Year.ToString() + _n.Month.ToString() + _n.Day.ToString() + "/";
                FtpUpload ftp = new FtpUpload(_path + fileName + "_0" + extensionName);
                ftp.UploadFile(file.InputStream);
                returnUrl = ftp.HttpFtpServerUrl;
            }
            catch (Exception ex)
            {
            }
        }
        else
        {
            context.Response.Write("0");
        }
    }