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JFileUpload 适合很多涉及到Web 上传的公司如印刷公司、主机服务、摄影师、网站管理员、CMS 商家、web相册等。JFileUpload 是一个Java 应用程序（Applet和WebStart），它允许终端用户向web 或ftp 服务器上传文件和文件夹。它可以被整合到任何应用程序中。
快速轻松的部署。

• 进度条：JFileUpload 前端包括一个进度条，在任何时候都可以通过取消按钮停止上传。
• 文件选择和拖拽：终端用户可以通过一个对话框或直接简单的从文件系统资源管理器中拖拽即可选择文件。支持多文件和多目录选择，同时可以压缩子目录。
• 自定义：JFileUpload 支持多语言，前端资源（菜单、文本、消息、背景图片、外观等）以ASCII 格式存储，并且可以修改。也可以添加图片预览器，同时颜色也可以更改。
• 高级特性：JFileUpload 支持超大文件上传（高达2GB），同时客户端占用较少的资源（内存、CPU）。它可以恢复被中断的上传，上传前重命名文件以及快速压缩文件。它可以限制上传文件大小（以bytes为单位）或限制上传文件类型（比如*.doc, *.exe）。它允许上传额外的参数（如：登录名，密码，sessionid,cookie），并且允许在上传后进行重定向。
• 跨服务器端技术：JFileUpload 是一个客户端组件，它支持HTTP 和FTP 传输协议。在服务端你需要一个服务器端组件来处理上传：
  HTTP: JFileUpload 通过标准的HTTP 协议（RFC1867）向Web 服务器发送文件，这就是为什么服务器端技术可以是Java/J2EE™,PHP,Microsoft ASP/.NET,Macromedia/Coldfusion 或 Perl/CGI的原因。针对Java/J2EE 服务器端脚本我们推荐使用JSPUpload 来处理在文件夹或数据库中的文件上传和存储。另外也支持HTTPS（HTTP在SSL之上）。
  FTP：被认证后（匿名或用户账号）JFileUpload 可以向ftp 服务器发送文件。另外也支持FTPS（FTP在SSL之上）
• 跨浏览器：JFileUpload 可以在大多数的操作系统下工作，如Windows,Linux,MacOSX.它已经通过Internet Explorer, Safari, Firefox, Opera 以及Google Chrome 的测试。
• 灵活的API：JFileUpload API 非常的灵活。它整合了新的前端、嵌入自定义过滤器、传递额外的HTTP 参数、支持cookies和session,代理服务器，支持认证。但是这些特性只能在JFileUpload 企业版和附加包中可用。
• 插件：一些其他的产品可在JFileUpload 上工作：
  JBatchUpload 上传前添加队列文件
  类似于FTP 的上传、下载资源管理器Amazon Simple Storage Service (S3)上传文件管理器
  支持安全的FTPFlickr 上传图片预览器和图片过滤器，快速生成缩略图，为你节省了带宽和上传时间。
  还可以使用工具插件，如PHP,JSP,ASP.NET和ColdFusion简单上传脚本，PGP 加密过滤器、JavaScript API.更多的工具可以嵌入到JFileUpload 中。

JFileUpload fits to many businesses involving web uploads such photographers, printing companies, web albums, hosting services, webmasters, CMS vendors ... JFileUpload is a Java Application (Applet and WebStart) that allows end-user to upload files and folders to a web or ftp server. It could be integrated into any application. Deployment is fast and easy.

• Progress bar:JFileUpload front-end includes a progress bar. Upload could be stopped at any time thanks to a cancel button.
• File(s) selection and Drag&Drop:End-user could select file(s) to upload with a dialog box or through simple drag and drop from file system explorer. Multiple files and directories selection is allowed. Recurse subdirectories feature is available too.
• Customization:JFileUpload includes multilanguage support. Front-end resources (menu, text items, messages, background image, look and feel, ...) are stored in ascii files and could be modified. Image previewer could be added and colors could be modified too.
• Advanced features:JFileUpload supports very large uploads (more than 2 GB) with low resources (RAM, CPU) usage on client-side. It could resume broken upload, rename files before upload and ZIP file on fly. It allows to limit size (in bytes) or type (e.g. *.doc, *.exe) of files to upload. It allows to pass extra parameters (e.g. login, password, sessionid, cookie, ...) and allows post-processing by redirecting to an URL after upload.
• Cross server-side technology:JFileUpload is a client-side component. It provides both HTTP and FTP transport protocols support. You do need a server-side component to process upload on server:HTTP: JFileUpload sends files to a web server through standard HTTP multipart (RFC 1867) request, that's the reason why server-side technology could be Java/J2EE™, PHP, Microsoft ASP/.NET, Macromedia/Coldfusion or Perl/CGI. For Java/J2EE server-side script, we recommend JSPUpload to process upload and store files in folder or database. Note that HTTPS (HTTP over SSL) is supported too.
• FTP:JFileUpload sends files to a ftp server after being authenticated (anonymous or user account). Note that FTPS (FTP over SSL) is supported too.
• Cross browsers:JFileUpload works under most operating systems such as Windows, Linux and MacOSX. It has been tested with Internet Explorer, Safari, Firefox, Opera and Google Chrome.
• Flexible API:JFileUpload API is flexible. It is designed to integrate new front-ends, plug custom filter, pass extra HTTP parameters, support cookies and session, proxies, support authentication ... However, this feature is only available in JFileUpload enterprise and premium packages.
• Add-ons:A few others products could work on the top of JFileUpload: JBatchUpload to queue files before upload, FTP-like explorer to upload and download, Amazon Simple Storage Service (S3) uploader and file manager, Secure FTP support, Flickr upload, image previewer and image scaling filter to generate thumbnails on the fly. Such filter allows saving bandwidth and lowering upload time. An add-ons section is available with tools such as PHP, JSP, ASP.NET and ColdFusion upload sample scripts, PGP encryption filter, JavaScript API and more tools that could be plugged to JFileUpload.