I`m new to ajax4jsf . I`m trying to use ajax in my jsf application. I
used Jboss seam in my app. for using ajax4jsf , i was copy the
ajax4jsf.jar in my WEB-INF/lib , deploy app and start jboss , but
when i want to link to my app e.x (http://localhost:8080/myapp), am
exception was thrown as below :
10:05:29,781 ERROR [[Faces Servlet]] Servlet.service() for servlet
Faces Servlet threw exception
java.lang.NullPointerException at
org.jboss.seam.contexts.PageContext.getCurrentReadableMap
(PageContext.java:62) at org.jboss.seam.contexts.PageContext.get
(PageContext.java:52) at
org.jboss.seam.contexts.Contexts.lookupInStatefulContexts
(Contexts.java:125) at org.jboss.seam.Component.getInstance
(Component.java:1026) at
org.jboss.seam.jsf.SeamVariableResolver.resolveVariable
(SeamVariableResolver.java:43) at
org.ajax4jsf.framework.ajax.AjaxContext.getCurrentInstance
(AjaxContext.java:154) at
org.ajax4jsf.framework.renderer.AjaxPhaseListener.beforePhase
(AjaxPhaseListener.java:124) at
org.apache.myfaces.lifecycle.LifecycleImpl.informPhaseListenersBefore
(LifecycleImpl.java:520) at
org.apache.myfaces.lifecycle.LifecycleImpl.render
(LifecycleImpl.java:342) at javax.faces.webapp.FacesServlet.service
(FacesServlet.java:107) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:252) at
org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:173) at
org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter
(BaseXMLFilter.java:127) at
org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter
(BaseFilter.java:277) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:202) at
org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:173) at
org.jboss.seam.servlet.SeamRedirectFilter.doFilter
(SeamRedirectFilter.java:23)

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Do anyone know what is the problem?