Null pointer exception on <jsp:include>

[parki]

Hello:

Sorry for the barrage of questions today, but thanks to those helping out - it's super-appreciated.

I am seeing a NPE when trying to <jsp:include> a file.

My servlet mapping is:

<servlet-mapping>
<servlet-name>FacesServlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>

and my JSF files are *.jsp - all is working fine except when I try an include. Here's the include part:



<f:view>
...
<jsp:include page="/include/example.jsf" />
...

And the file (/include/example.jsp):

<f:subview>
<h:outputText value="TESTING" />
</f:subview>

The stack trace is below - it indicates an error on a line pretty far away from the <jsp:include> tag, so I'm stumped. If I change the include to be:

<jsp:include page="/include/example.jsp" />

then I get the contents of the file included in my page (with no error) but not processed.

Any help is appreciated.

Thanks.

parki...



org.apache.jasper.JasperException: An exception occurred processing JSP page /protected/main.jsp at line 50

47: <rich:toolBar height="30" itemSeparator="line">
48: <h:outputText value="#{i18n.app_name}" />
49: <rich:toolBarGroup location="right">
50: <h:commandButton action="#{visit.changeLocale}" title="submit" value="locale" />
51: <h:commandButton action="#{authentication.logout}" title="submit" value="logout" />
52: </rich:toolBarGroup>
53: </rich:toolBar>


Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:518)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:411)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:408)
com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:442)
com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:115)
org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
com.avaning.webapp.servlet.AuthorizationFilter.doFilter(AuthorizationFilter.java:60)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause

javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.NullPointerException
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:851)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:784)
org.apache.jsp.protected_.main_jsp._jspService(main_jsp.java:173)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:387)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:408)
com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:442)
com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:115)
org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
com.avaning.webapp.servlet.AuthorizationFilter.doFilter(AuthorizationFilter.java:60)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

[dmitry.demyankov]

Can you try using a4j:include instead of jsp:include?

[parki]

Hi Dmitry:

I changed the line to read <a4j:include viewId="/include/example.jsf" /> and I get the same problem - a null pointer exception.

A couple points, which might help:

1. My *.jsp pages look like (simplified):

<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j" %>
<%@ taglib uri="http://richfaces.org/rich" prefix="rich" %>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

<ui:composition>
...

<f:view>
...
</f:view>

</ui:composition>


Is this the usual/recommended way to do things? I suspect the <ui:composition> tag is not needed, but I'm a bit unsure.

2. I reduced the included file (/include/example.jsp) to just contain:

<h:outputText value="TESTING" />

and I still get the null pointer exception.

I think I'm doing something wrong/amiss in how I'm structuring the pages.

Any help, as always, appreciated.

Regards,

parki...

[dmitry.demyankov]

"parki" wrote:
<a4j:include viewId="/include/example.jsf" />

Are you trying to include file with name example.jsp? Then you should have in the include code "example.jsp" instead of "example.jsf" - filename should be used, not the mapping from web.xml

Does it work with

<h:outputText value="TESTING" />

inside example.jsp then a4j:include is corrected?