Deployment

Deployment

•      Write the servlet class.

•      Compile the Servlet class.

 •       Extract the HTML form parameters from HttpServletRequest.

•       web.xml deployment descriptor file.

•       Create the war (web application archive) file.

•       Deploy and run the sample web application in tomcat web container.

Define servlet in deployment descriptor (web.xml) :

A servlet must be defined into web.xml deployment descriptor. Copy the following code into web.xml file and save it under WEB-INF directory.

<?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> welcomeServlet </servlet-name>

<servlet-class> jsptube.tutorials.servletexample.WelcomeServlet

</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name> welcomeServlet </servlet-name>

<url-pattern> welcomeServlet </url-pattern>

</servlet-mapping>

 <welcome-file-list>

<welcome-file>/ welcomeServlet </welcome-file> </welcome-file-list>

</web-app>

Deploy form processing servlet application to tomcat server

•       You just need to create war file of our web application and copy it to webapp directory under your tomcat installation to deploy application to tomcat. Open command prompt and go to root directory of our application (welcomeServlet). Create a war file using following command.

jar -cvf welcomeservlet.war *

•       It will create formexample.war file under FormExample directory. Copy the war file to webapp directory under tomcat installation.