When invoke a richlet it fail to init.

Stack trace

Servlet.service() para servlet zkLoader

java.lang.NullPointerException
org.zkoss.zk.ui.impl.PageImpl.<init>(PageImpl.java:217)
org.zkoss.zk.ui.impl.AbstractUiFactory.newPage(AbstractUiFactory.java:88)
org.zkoss.zk.ui.http.WebManager.newPage(WebManager.java:535)
org.zkoss.zk.ui.http.DHtmlLayoutServlet.process(DHtmlLayoutServlet.java:201)
org.zkoss.zk.ui.http.DHtmlLayoutServlet.doGet(DHtmlLayoutServlet.java:134)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Web.xml (zk template default)

zk.xml

<richlet>
<richlet-name>pp</richlet-name>
<richlet-class>richlet.Test</richlet-class>
</richlet>
<richlet-mapping>
<richlet-name>pp</richlet-name>
<url-pattern>/prueba</url-pattern>
</richlet-mapping>

Richlet code

package richlet;
import org.zkoss.zk.ui.GenericRichlet;
import org.zkoss.zk.ui.Page;
import org.zkoss.zk.ui.RichletConfig;
import org.zkoss.zk.ui.metainfo.LanguageDefinition;
import org.zkoss.zul.Window;

public class Test extends GenericRichlet {

public void init(RichletConfig config)

{ super.init(config); }

;

@Override
public void destroy()

{ // TODO Auto-generated method stub }

@Override
public void service(Page page) throws Exception

{ Window d=new Window(); d.setTitle("test"); d.setPage(page); System.out.println(""); }

@Override
public LanguageDefinition getLanguageDefinition()

{ // TODO Auto-generated method stub return null; }

}