Develop an Ajax-Based File Upload Portlet Using DWR
File upload is a basic function of today's Web portals. In this article, authors Xiaobo Yang and Rob Allan describe how to develop an Ajax-based file upload JSR 168-compliant portlet using DWR (Direct Web Remoting). DWR is an ideal Ajax framework for Java developers that dynamically generates JavaScript based on server-side deployed Java classes. You will learn how you can use DWR to retrieve file upload progress from the portal server.
Yang, Xiabo and Robert Allan. IBM (2007). Articles>Web Design>User Interface>Ajax