NOTE: These slides have not been updated since 2003. They have been superseded by the book An Introduction to XML and Web Technologies Addison-Wesley, and the accompanying online material. Please see http://www.brics.dk/ixwt/ for more information. Anders Møller and Michael Schwartzbach, February 2006

INTERACTIVE WEB SERVICES WITH JAVA

Interactive Web Services

The client-server model:

1. a client initiates communication with a server (e.g. requesting a page)
2. the server responds (e.g. returns the page)

In an interactive Web service, the pages contain forms with information to the server, and the reply is generated dynamically.

Compared to static HTML pages, interactive Web services can provide:

• up-to-date information (replies generated at time of request)
• tailor-made information (reply generated dynamically by program based on user input and current server state)
• two-way communication (client can also send data to server)

• presentation (receive client requests, produce HTML replies)
• functionality (extract information, track user sessions)
• data (database / containers)

In JSP/Servlets/JWIG, the data layer consists of an SQL/JDBC database or java.util containers.

COPYRIGHT © 2002-2003 ANDERS MØLLER & MICHAEL I. SCHWARTZBACH