web.xml
Used by the Servlet Container (Ex. Tomcat) to handover user's request to a specified class.
<web-app>
<servlet>
<servlet-name>servlet_name</servlet-name>
<servlet-class>servlet_class</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>servlet_name</servlet-name>
<url-pattern>url_of_actions</url-pattern>
</servlet-mapping>
</web-app>
Explaining Tags
<web-app>: Starting of the web.xml should be done with this tag.
<servlet>: Details regarding servlets, the name, servlet class.
<servlet-name>: Name of the servlet, used within the servlet again.
<servlet-class>: Servlet class file is specified here. Servlet container passes request to this class. If was written in a package, then it must be like package_name.sub_package.class
<servlet-mapping>: Mapping servlet class and the url of the users request. Servlet container determines user's request and then forwards it to the class file with the help of servlet name.
<url-pattern>: The pattern (the url) to which the user's request is received.
