As you can see, this simple sample satisfies the standard layout of web application directory. In WEB-INF subdirectory there is a web.xml, the deployment descriptor. In the application directory, there are two files: an interface webpage login.html, which takes input from users, and forward it to validate.jsp. Dynamic executed, validate.jsp will tell servlets to connect the course Oracle database via JDBC API.

To run the example, launch Monitor Tomcat tool and start the service. Now you could visit the login page through http://localhost:8080/sample/login.htm (here I assume you unzip the source code in the subdirectory 'sample').

To test this application I created a table 'student' in the course Oracle database under my account. The initial instance of this table looks like:

The user of VirtualTicket should already register in the database, whic­h is having a tuple in the 'student' table. Then he input his name as the username, according to the Name field of the tuple; and input UNITYID field as his password. The login.html will take over this input and call validate.jsp to verify the user's identification. If verified, validate.jsp will post the information of the 'student' table in the webpage. Otherwise, it prints