Hi!
In servlet-->we are using deployment descriptor for servlet to run.
In JSP-->,JSP is converted as a servlet and then executed the request.So,it need deployment descriptor .But.we are not using deployment descriptor .
why?
I want to know the reason..............
anyone give clear answer to me.
There is a deployment descriptor.
It is hidden in the standard web.xml for all apps.
It basically maps all .jsp files to a specific process.
In Tomcat you can find it in [TOMCAT]/conf/web.xml
Looks something like this:
<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>fork</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>xpoweredBy</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
<!-- The mapping for the JSP servlet -->
<servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>*.jsp</url-pattern>
</servlet-mapping>
> In JSP-->,JSP is converted as a servlet and then
> executed the request.So,it need deployment descriptor
> .But.we are not using deployment descriptor .
> why?
Because you don't need to care about it. The applicationserver should care about parsing JSP's through the default JspServlet.
If you want to add some custom servlets for handling business logic, there the deployment descriptor in web.xml is for.
