How to access web.xml init parameters from jsp page?

You can get it using initParam pre-defined JSF EL valiable.

For example, if you have:

<context-param>
 <param-name>productId</param-name>
 <param-value>2004Q4</param-value>
</context-param>

You can access this parameter with

#{initParam['productId']} 

. For example:

Product Id: <h:outputText value="#{initParam['productId']}"></h:outputText>