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Servlet Mapping - Java

Today, Budi walks us through a refresher and brief overview of server JSP programming. Today's portion covers Servlet technologies, including servlets and Tomcat. This excerpt comes from chapter one of JavaServer Faces Programming, by Budi Kurniawan (McGraw-Hill/Osborne, ISBN 0-07-222983-7, 2004).

TABLE OF CONTENTS:
  1. Overview of Java Web Technologies, Part 1
  2. Methods
  3. Creating a Servlet Directory Structure
  4. Reviewing Deployment Descriptors
  5. Servlet Mapping
  6. Defining Context Parameters
  7. Retrieving Context Parameters
  8. Listening to Application Events
  9. Packaging and Deploying a Web Application
By: McGraw-Hill/Osborne
Rating: starstarstarstarstar / 25
March 01, 2004

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Before you can access a servlet from a Web browser, you must map the servlet to a path in your deployment descriptor. For example, the deployment descriptor in Listing 1 creates the servlet name MyServlet and maps it to /aUrl.

Listing 1 The Deployment Descriptor Mapping

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>MyServlet</servlet-name>
<servlet-class>ch01.MyServlet</servlet-class>
</servlet>
<! mapping >
<servlet-mapping>
<servlet-name>MyServlet</servlet-name>
<url-pattern>/aUrl</url-pattern>
</servlet-mapping>
</web-app>

This enables your users to access the servlet using the following URL:

http://localhost:8080/appName/aUrl

Buy this book now!Remember: This is part one of the first chapter of JavaServer Faces Programming, by Budi Kurniawan (McGraw-Hill/Osborne, ISBN 0-07-222983). Stay tuned for part 2 of "Overviews of Java Web Technologies," where we learn about JSP, JavaBeans, and Model 2. 
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