Servlets and RMI

Servlets are Java classes that are loaded and executed by a web server. This chapter shows an example in which a servlet invokes remote methods.

The source code needed for this example is stored in the examples\ServletsandRmi directory. The "ServletsandRmi" directory contains the following files:

• ServerHandlerInterface.java
• ServerHandlerImpl.java
• ClientServlet.java
• Client.html
• Compile.bat
• Rmicompile.bat
• RunServer.bat

To run this example you need the following:

A web browser
Java Web Server

The Server Interface

The ServerHandlerInterface defines a method that takes a string object (name of the user) as its argument and returns a small message.

Listing 12.1 ServerHandlerInterface.java

import java.rmi.*;

//server interface
public interface ServerHandlerInterface 
	extends Remote{
	
	//This method gets the name of the user.
	public String servletTest(String name)
		 throws RemoteException;
}