Electronic Postcard Application with Servlets and Sockets

Name

Short: Servlets and Sockets
Long: Electronic Postcard Application with Servlets and Sockets

Objective

The purpose of this lab is to implement a part of a distributed application using servlets that execute on a web server and use sockets for inter-process communication.

Time allocation

Four hours are allocated to complete this lab assignment.

Exercise

You will have to implement three servlets that:

Build a web page that presents the available cards as thumbnails. The information about the available cards should be taken form the cards database. The servlet should use sockets in order to connect to the CardDatabaseServer.
For a chosen card, construct a web page presenting the card and a text area to fill in the message.
Given a message and a card, construct a web page as it will be seen by the recipient. The servlet should connect to the CardWriteServer in order to write the message on the chosen card.
Track the user's movements through the web site.

TO DO

Install the lab assignment.
Make sure the servletrunner is working properly by executing some of the servlet examples.
Start by modifying the Client.java from the sockets example.
Enable your servlets to track the user's session; display the session ID on the web pages.
The resulted postcard should stay on the web server for two weeks; create a unique file name for it.

Note: To pass this lab assignment you should generate all the three pages. You do not need to do session tracking and the unique file name in order to pass the lab.

Reporting your work

The lab is reported by showing the assistant the working application. All members of the lab group should be present when reporting.