Deployment Descriptor

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
    "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
    <servlet>
        <servlet-name>
            hi
        </servlet-name>
        <servlet-class>
            HelloWorld
        </servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>
            hi
        </servlet-name>
        <url-pattern>
            /hello.html
        </url-pattern>
    </servlet-mapping>
</web-app>

• Order matters
• http://server:8080/servlet/hi will now access HelloWorld servlet.
• Also, hi is also set to handle URLs that match /hello.html.
• Can use * in pattern to match anything, for example
  • /item/*
  • *.jsp
  • / matches everything.