Hello,
I'm working for a simple Pageflow, realised in Seam, for a while. I thougt I
got it running but something is missing.
When accessing a Seam Component over a jsp-file like:
<h:outputText value="#{purchaseOrder1.number}"/>
the function getNumber() in the component-class PurchaseOrder1 is called and I
get the error-message from the browser:
anonymous wrote : javax.servlet.ServletException: Cannot get value for
expression '#{purchaseOrder1.number}'
| javax.faces.webapp.FacesServlet.service(FacesServlet.java:121)
|
org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:23)
|
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
|
|
|
and the app-server says:
anonymous wrote : 16:44:37,062 ERROR [STDERR] java.lang.NullPointerException
| 16:44:37,062 ERROR [STDERR] at
org.jboss.seam.core.Pageflow.begin(Pageflow.java:191)
| 16:44:37,062 ERROR [STDERR] at
org.jboss.seam.interceptors.ConversationInter
| ceptor.beginNavigation(ConversationInterceptor.java:200)
| 16:44:37,062 ERROR [STDERR] at
org.jboss.seam.interceptors.ConversationInter
| ceptor.beginConversation(ConversationInterceptor.java:186)
| 16:44:37,062 ERROR [STDERR] at
org.jboss.seam.interceptors.ConversationInter
| ceptor.beginConversationIfNecessary(ConversationInterceptor.java:146)
| 16:44:37,062 ERROR [STDERR] at
org.jboss.seam.interceptors.ConversationInter
| ceptor.endOrBeginLongRunningConversation(ConversationInterceptor.java:70)
| 16:44:37,062 ERROR [STDERR] at
sun.reflect.NativeMethodAccessorImpl.invoke0(
| Native Method)
and many more. My code is oriented on the numberguess-example. Without calling
the seam-component the jsp-site starts very well with URI-mapping
anonymous wrote : http://localhost:8080/seam-purchaseOrder1/purchaseOrder1.seam
but without initiating the pageflow.
Thanks for your help,
Regards Frank
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