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No lengthy conversations - IllegalArgumentException: Stack must not be null

I have a very simple two-page application on WebLogic 10.3.2 (11g), Seam 2.2.0.GA. I have a command button in each, which makes redirection after recording to another. This works well, as I see the URL of the current page that I see in the address bar.

BUT , although I do n't have long conversations , after a random number of clicks and, I think, after a random number of seconds (~ 10s - 60s) I get a nice exception at the end of this post.

Now, if I understand how temporary conversations work when a redirect occurs:

  • When I first see my application, the URL is http: // localhost: 7001 / myapp

  • When I click the button in pageA.xhtml, I end with "pageB.xhtml? Cid = 26". This is normal because Seam extends the time chain of the first request to the last phase of the visualization of the redirect rendering. Thus, it uses the cid (dialog id) extended time conversation to search for any common parameters.

  • When I click the button in pageB.xhtml, do I get in pageA.xhtml? cid = 26

The same cid was transferred to a new extended temporary conversation. This is normal because the conversation ended at the end of the previous redirect after recording, and not number 26, which can be used as cid.

? , : ( A) , pageB.xhtml? Cid = 29, 26. 26 RenderResponse, befire url. 29?

, , 2 :

  • , ?
  • cid? ?

,

UPDATE:

: h: commandButtons, A:

<h:commandButton action="showPageB" value="Show page B" />

B

<h:commandButton action="showPageA" value="Show page A" />

A.page.xml:

<page view-id="/pageA.xhtml">
<navigation>
    <rule if-outcome="showPageB">
        <redirect view-id="/pageB.xhtml" />
    </rule>
</navigation>
</page>

pageB.

, 1 . , , , , . :

Error 500--Internal Server Error

    java.lang.IllegalArgumentException: Stack must not be null
    at org.jboss.seam.core.ConversationEntry.(ConversationEntry.java:45)
    at org.jboss.seam.core.ConversationEntries.createConversationEntry(ConversationEntries.java:53)
    at org.jboss.seam.core.Manager.createConversationEntry(Manager.java:664)
    at org.jboss.seam.core.Manager.beforeRedirect(Manager.java:836)
    at org.jboss.seam.faces.FacesManager.beforeRedirect(FacesManager.java:66)
    at org.jboss.seam.faces.FacesManager.redirect(FacesManager.java:182)
    at org.jboss.seam.faces.Navigator.redirect(Navigator.java:55)
    at org.jboss.seam.navigation.RedirectNavigationHandler.navigate(RedirectNavigationHandler.java:61)
    at org.jboss.seam.navigation.Rule.execute(Rule.java:101)
    at org.jboss.seam.navigation.Navigation.navigate(Navigation.java:58)
    at org.jboss.seam.navigation.Pages.navigate(Pages.java:203)
    at org.jboss.seam.jsf.SeamNavigationHandler.handleNavigation(SeamNavigationHandler.java:42)
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:130)
    at javax.faces.component.UICommand.broadcast(UICommand.java:387)
    at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:324)
    at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:299)
    at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:256)
    at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:469)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
    at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
    at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
    at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:530)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
    at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
    at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
    at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
    at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
    at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
    at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
    at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
    at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
    at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
    at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
    at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
    at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3592)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
    at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2202)
    at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2108)
    at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1432)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
+3
3

, stacktrace.

, . , .

" ":

@ScopeType.EVENT = Goes from Restore View to Render Response, but not redirect @ScopeType.CONVERSATION = Goes from Restore VIew to Render Response, and redirect. If long-running conversation, then it spans multiple JSF life cycles.

, , a.xhtml, , ComponentA . , b.xhtml :

Push commandbutton in a.xhtml performing post, putting some data in ComponentA (b.xhtml), ComponentA

@Name("componentB")
@Scope(ScopeType.CONVERSATION)
public class ComponentB {
    @In(create=true)
    ComponentA componentA; //OK
}

, b.xhtml, , ComponentA, . :

@Name("componentC")
@Scope(ScopeType.CONVERSATION)
public class ComponentC {
    @In(create=true)
    ComponentA componentA; //Injection of the component you really want fails (you will get default component)
}

, cid , cid, .

+1

StackTrace ( )

FacesManages.beforeRedirect( StackTrace)

beforeRedirect

if (isDifferentConversationId(currentPage, targetPage))
    updateCurrentConversationId(targetPage.getConversationId());

...

updateCurrentConversationId Stack , . StackTrace

public void updateCurrentConversationId(String id) {
    if (id != null && id.equals(currentConversationId)) {
     // The conversation id has not changed, do nothing       
     return;
  }

, , Stack . - ( ) Seam

(. timeout = "0" )

<page view-id="/pageA.xhtml" timeout="0">
    <navigation>
        <rule if-outcome="showPageB">
            <redirect view-id="/pageB.xhtml" />
        </rule>
    </navigation>
</page>

, ! , , ,

UPDATE

< -/ > ( )

<page view-id="/pageA.xhtml">
    <navigation>
        <rule if-outcome="showPageB">
            <end-conversation/>
            <redirect view-id="/pageB.xhtml" />
        </rule>
    </navigation>
</page>

(. -)

<page view-id="/pageA.xhtml">
    <navigation>
        <rule if-outcome="showPageB">
            <end-conversation before-redirect="true"/>
            <redirect view-id="/pageB.xhtml" />
        </rule>
    </navigation>
</page>

, !

beforeRedirect

. .

1 ° , # { .longRunning} true, B. " ", , .

Seam URL.

" "

Seam Seam URL

, A, , , Seam , URL- -, -, .

, , ,

  • (5000 )

...

<core:manager conversation-timeout="5000"/>

., # {chat.timeout}. - 5 5000 . 5 ( 10 ) . , .

+1

. , .

, commandButton . pages.xml :

<page view-id="/pageA.xhtml">
<navigation>
    <rule if-outcome="showPageB">
        <redirect view-id="/pageB.xhtml" />
    </rule>
</navigation>
</page>

, - , showPageB :

public String someAction() {
    //Do something complex
    return "showPageB";
}

, . Seam.

@Name("myComponent")
public Class MyComponent {

public String showPageB() {
    return "showPageB";
}

public String showPageA() {
    return "showPageA";
}

}

.xml :

<page view-id="/pageA.xhtml">
<navigation from action="#{myComponent.showPageB}">
    <redirect view-id="/pageB.xhtml" />
</navigation>

<navigation from action="#{myComponent.showPageA}">
    <redirect view-id="/pageA.xhtml" />
</navigation>

<!-- OR you can do like this -->
<navigation from action="#{myComponent.showPageB}">
    <rule if-outcome="showPageA">
        <redirect view-id="/pageA.xhtml" />
    </rule>
    <rule if-outcome="showPageB">
        <redirect view-id="/pageA.xhtml" />
    </rule>
</navigation>
</page>

xhtml h:commandButton

<h:commandButton action="#{myComponent.showPageA}" value="showA"/>
<h:commandButton action="#{myComponent.showPageB}" value="showB"/>
0

Source: https://habr.com/ru/post/1740921/

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