Tips : Wicket and JEE 6 With Servlet 3.0 Annotations

JEE 6 and especially Servlet 3.0 introduce many features such as pluggability and asynchronous processing. In this post, I will show a how to use Wicket filter with servlet 3.0 annotations.

The deployment descriptor web.xml isn't mandatory for JEE 6 and one of the best way to declare wicket filter is by using this concise declaration :

package com.jtunisie.wicket;


import org.apache.wicket.protocol.http.WicketFilter;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;

@WebFilter(value = "/*", 
           initParams = { @WebInitParam(name = "applicationClassName", value = "com.jtunisie.wicket.Application")})
public final  class MyWicketFilter extends WicketFilter {}

<filter>
		<filter-name>WicketApplication</filter-name>
		<filter-class>org.apache.wicket.protocol.http.WicketFilter</filter-class>
		<init-param>
			<param-name>applicationClassName</param-name>
			<param-value>com.jtunisie.wicket.Application</param-value>
		</init-param>
		<init-param>
			<param-name>configuration</param-name>
			<param-value>deployment</param-value>
		</init-param>
		<init-param>
			<param-name>wicket.configuration</param-name>
			<param-value>deployment</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>WicketApplication</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>