Question

В настоящее время я пытаюсь создать составной компонент, и вот как я использую свой компонент:

Включить с xmlns:albert="http://java.sun.com/jsf/composite/albert"

А вот пример использования

<albert:infoButton
    infoId="infoSingleRecord"
    params="transDateFrom transDateTo"
    mappingMethod="#{tBrowseBean_ConfirmedRPB.mapSendInfoSingleRecord}" />

И этот компонент помещен в ресурсах / albert / infoButton.xhtml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"  
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:p="http://primefaces.prime.com.tr/ui"
    xmlns:fn="http://java.sun.com/jsp/jstl/functions"
    xmlns:composite="http://java.sun.com/jsf/composite">

    <composite:interface>
        <composite:attribute name="infoId" required="true" />
        <composite:attribute name="params" />
        <composite:attribute name="mappingMethod" method-signature="java.lang.String action()" />
    </composite:interface>

    <composite:implementation>
        <p:commandButton 
            process="@this #{cc.attrs.params}"
            actionListener="#{cc.attrs.mappingMethod}"
            update="#{cc.attrs.infoId}Panel"
            oncomplete="#{cc.attrs.infoId}Dialog.show()" 
            image="ui-icon ui-icon-search" />
    </composite:implementation>
</html>

Но при его запуске при нажатии кнопки infoButton эта трассировка исключений отображается в моем файле журнала catalina.out:

Apr 25, 2011 10:08:43 AM javax.faces.event.MethodExpressionActionListener processAction
SEVERE: Received 'javax.el.PropertyNotFoundException' when invoking action listener '#{cc.attrs.mappingMethod}' for component 'j_idt71'
Apr 25, 2011 10:08:43 AM javax.faces.event.MethodExpressionActionListener processAction
SEVERE: javax.el.PropertyNotFoundException: /TBrowse_tabConfirmedRPB.xhtml @33,77 mappingMethod="#{tBrowseBean_ConfirmedRPB.mapSendInfoSingleRecord}": Property 'mapSendInfoSingleRecord' not found on type mywebapp.paymentplan.TBrowseBean_ConfirmedRPB
    at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:111)
    at com.sun.faces.facelets.el.ContextualCompositeMethodExpression.invoke(ContextualCompositeMethodExpression.java:184)
    at com.sun.faces.facelets.tag.TagAttributeImpl$AttributeLookupMethodExpression.invoke(TagAttributeImpl.java:450)
    at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:148)
    at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
    at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:777)
    at javax.faces.component.UICommand.broadcast(UICommand.java:300)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:787)
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1252)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:383)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)

ERROR BusinessExceptionHandler - BusinessExceptioHandler handles an unhandled exception: 
javax.faces.event.AbortProcessingException: /TBrowse_tabConfirmedRPB.xhtml @33,77 mappingMethod="#{tBrowseBean_ConfirmedRPB.mapSendInfoSingleRecord}": Property 'mapSendInfoSingleRecord' not found on type mywebapp.paymentplan.TBrowseBean_ConfirmedRPB
    at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:182)
    at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
    at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:777)
    at javax.faces.component.UICommand.broadcast(UICommand.java:300)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:787)
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1252)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:383)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Caused by: javax.el.PropertyNotFoundException: /TBrowse_tabConfirmedRPB.xhtml @33,77 mappingMethod="#{tBrowseBean_ConfirmedRPB.mapSendInfoSingleRecord}": Property 'mapSendInfoSingleRecord' not found on type mywebapp.paymentplan.TBrowseBean_ConfirmedRPB
    at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:111)
    at com.sun.faces.facelets.el.ContextualCompositeMethodExpression.invoke(ContextualCompositeMethodExpression.java:184)
    at com.sun.faces.facelets.tag.TagAttributeImpl$AttributeLookupMethodExpression.invoke(TagAttributeImpl.java:450)
    at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:148)
    ... 24 more

Интересно, почему это происходит, потому что в mywebapp.paymentplan.TBrowseBean_ConfirmedRPB я уже предоставляю это:

public String mapSendInfoSingleRecord(ActionEvent event) {                                                                                                                             
    System.out.println("mapSendInfoSingleRecord");                                                                                                                                 
    return null;                                                                                                                                                                   
}

И после этого я попытался поместить фиктивное поле mapSendInfoSingleRecord и посмотреть, что произойдет:

private String mapSendInfoSingleRecord;
public String getMapSendInfoSingleRecord() {
    return mapSendInfoSingleRecord;
}

public void setMapSendInfoSingleRecord(String mapSendInfoSingleRecord) {
    this.mapSendInfoSingleRecord = mapSendInfoSingleRecord;
}

Но нажатие на кнопку теперь вызывает это исключение:

Apr 25, 2011 10:32:46 AM javax.faces.event.MethodExpressionActionListener processAction
SEVERE: Received 'javax.el.MethodNotFoundException' when invoking action listener '#{cc.attrs.mappingMethod}' for component 'j_idt71'
Apr 25, 2011 10:32:46 AM javax.faces.event.MethodExpressionActionListener processAction
SEVERE: javax.el.MethodNotFoundException: Method not found: com.sun.faces.el.CompositeComponentAttributesELResolver$ExpressionEvalMap@12f3802.mappingMethod()
        at org.apache.el.util.ReflectionUtil.getMethod(ReflectionUtil.java:225)
        at org.apache.el.parser.AstValue.invoke(AstValue.java:253)
        at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278)
        at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:153)
        at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
        at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:777)
        at javax.faces.component.UICommand.broadcast(UICommand.java:300)
        at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:787)
        at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1252)
        at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:383)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)

ERROR BusinessExceptionHandler - BusinessExceptioHandler handles an unhandled exception: 
javax.faces.event.AbortProcessingException: Method not found: com.sun.faces.el.CompositeComponentAttributesELResolver$ExpressionEvalMap@12f3802.mappingMethod()
        at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:182)
        at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
        at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:777)
        at javax.faces.component.UICommand.broadcast(UICommand.java:300)
        at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:787)
        at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1252)
        at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:383)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
Caused by: javax.el.MethodNotFoundException: Method not found: com.sun.faces.el.CompositeComponentAttributesELResolver$ExpressionEvalMap@12f3802.mappingMethod()
        at org.apache.el.util.ReflectionUtil.getMethod(ReflectionUtil.java:225)
        at org.apache.el.parser.AstValue.invoke(AstValue.java:253)
        at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278)
        at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:153)
        ... 24 more

Я тестировал на моджарре версии 2.0.4-b09 и 2.1.1-b04 с теми же результатами.

Интересно, что я тут не так сделал?

BalusC · Answer 1 · 25 апреля 2011

Есть две проблемы:

Во-первых, составной method-signature, который вы определили

<composite:attribute name="mappingMethod" method-signature="java.lang.String action()" />

не совпадает с реальной сигнатурой метода

public String mapSendInfoSingleRecord(ActionEvent event)

Во-вторых, методы actionListener должны возвращать void, а не String.

Я предполагаю, что вы просто хотите метод action, затем вам следует изменить сигнатуру реального метода, чтобы избавиться от аргумента ActionEvent:

public String mapSendInfoSingleRecord()

Что касается actionListener против action, этот вопрос / ответ может оказаться полезным: Различия между action и actionListener .

javax.el.PropertyNotFoundException с CompositeComponent?

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javax.el.PropertyNotFoundException с CompositeComponent?

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