Practice MVC with Java EE

This java class's responsibility is to interact with the databse. Upon class initialization, a connection to the database will be established. When validateUser method is called, the program will SELECT from the user table and return the first record.

Please note that for simplicity, the database access credentials are stored directly in the code.

This class is created to store user information. In this case, each UserModel instance will be used to store a username and a password.

This is a servlet where the main business logic lies. When this servlet gets called, a database connection will be created. Upon receiving a POST request, the method doPost will be executed. 

In doPost method, 

Display a web form to a user, and send the data to UserController servlet using POST request.

The webpage to which the user will be directed if entered username/password matches a record in the user database.

The webpage which will be displayed to user if no record matches the username/password the user provided.

Create a database and a table with two columns. Add one record to the table.

Upon entering the correct username and password, access to the website will be granted.

If the username and password pair don’t match any record in the database, the user will be redirected to a page that displays an error message.