HtmlAjaxSupport + IllegalArgumentException wrong number of arguments

[svkap]

Hi.

I have some problems with HtmlAjaxSupport.

Here is my jsf page:

                         <h:panelGrid columns="2"
                                columnClasses="pnlGrdClassMsg, pnlGrdClassLong">
                                <h:panelGrid id="msgPanelGridId" binding="#{profileBean.msgPanelGrid}" />
                               
                                <a4j:commandLink reRender="msgPanelGridId" ajaxSingle="true"
                                    action="#{profileBean.newMessenger}">
                                    <h:outputText value="Add new messenger" />
                                </a4j:commandLink>
                            </h:panelGrid>

Part of my code for dynamic messenger creation:

        // create input
        HtmlInputText input = new HtmlInputText();
        String imsUserInputId = imsUserInput_Id + imsNumber;
        input.setId(imsUserInputId);
        input.setSize(20);
        input.setMaxlength(40);
        input.setValue(new String(ims.getUsername()));
        MethodExpression inputActionExpression = expressionFactory
                .createMethodExpression(elContext,
                        "#{profileBean.msgInputValueChange}", null,
                        new Class[] { ValueChangeEvent.class });
        MethodExpressionValueChangeListener inputListener = new MethodExpressionValueChangeListener(
                inputActionExpression);
        input.addValueChangeListener(inputListener);

        HtmlAjaxSupport as = new HtmlAjaxSupport();
        as.setEvent("onchange");
        as.setId(imsAjaxUserInput_Id + imsNumber);
        as.setActionExpression(inputActionExpression);
        as.setReRender(pnlGrid.getId());
        input.getChildren().add(as);
       
        pnlGrid.getChildren().add(input);

When I click on newMessenger command link I get this exception:

exception

javax.servlet.ServletException: wrong number of arguments
     javax.faces.webapp.FacesServlet.service(FacesServlet.java:323)
     org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206)
     org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
     org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
     org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)

root cause

java.lang.IllegalArgumentException: wrong number of arguments
     sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     java.lang.reflect.Method.invoke(Method.java:597)
     com.sun.el.parser.AstValue.invoke(AstValue.java:234)
     com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297)
     javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
     com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
     javax.faces.component.UICommand.broadcast(UICommand.java:315)
     org.ajax4jsf.component.AjaxActionComponent.broadcast(AjaxActionComponent.java:55)
     org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:329)
     org.ajax4jsf.component.AjaxViewRoot.broadcastEventsForPhase(AjaxViewRoot.java:304)
     org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:261)
     org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:474)
     com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
     com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
     com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
     javax.faces.webapp.FacesServlet.service(FacesServlet.java:310)
     org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206)
     org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
     org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
     org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)

[svkap]

Hi.

Actually the problem was in:

MethodExpression inputActionExpression = expressionFactory
                .createMethodExpression(elContext,
                        "#{profileBean.msgInputValueChange}", null,
                        new Class[] { ValueChangeEvent.class });

.....

as.setActionExpression(inputActionExpression);

HtmlAjaxSupport requre method with no parameters. So this works:

MethodExpression inputActionExpression = expressionFactory
                .createMethodExpression(elContext,
                        "#{profileBean.msgInputValueChange}", null,
                        new Class[] {});

.....

as.setActionExpression(inputActionExpression);