Abstract: On the basis of the browser/server application environment, uploading varied files and convenient management of upload files has become one of the problems of file management applications. The program of file upload without components was designed by using Java I/O flow. The operation of uploading files includes interfaces of submission, process and management of upload files. Upload files are able to be directly stored in the appointed catalog, and upload files can be managed through database. The implement principle of upload files using Java I/O flow and database management method were discussed. And detailed solutions and implement methods were given. 

Key words: File upload, Java, Jsp, Database

摘要： 在基于浏览器／服务器的应用环境中，上传各种类型的文件并方便地管理一直是困扰用户文件管理应用的难题之一。利用Java I/O流类的输入输出对象开发无组件上传程序，上传文件操作包括提交上传文件请求页面,处理上传文件的页面和管理上传文件的页面，上传文件可直接存储到指定目录，并采用数据库管理上传文件。论述了用Java I/O流技术上传文件的实现原理及用数据库管理的方法，给出了具体的解决方案和实现方法。

关键词: 文件上传, Java, JSP, 数据库