学步园

            SmartUpload su = new SmartUpload();
            su.initialize(this.servlet.getServletConfig(),request,response);
            su.setContentDisposition(null);
            //获得文件的URL
            long id =ParamUtil.getLongParameter(request,"id",0);
            Diary diary =blogMgr.getDiaryById(id);
            String filepath = diary.getFilepath();
            su.downloadFile(filepath);
            return null;