Как использовать управляемое свойство боба в командной кнопке действия

Как я установить действие:Как использовать управляемое свойство боба в командной кнопке действия

<h:commandButton id="submit" value="Submit" action="#{user.nav}"/>

так что action является String, который возвращается из User фасоли?

В login.xhtml, вызывающие проблемы:

<?xml version='1.0' encoding='UTF-8' ?> 
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<ui:composition xmlns="http://www.w3.org/1999/xhtml" 
       xmlns:ui="http://xmlns.jcp.org/jsf/facelets" 
       xmlns:h="http://xmlns.jcp.org/jsf/html" 
       xmlns:f="http://xmlns.jcp.org/jsf/core"> 
    <h:form> 
     <h2> 
      Hi, my name is #{user.myName} #{user.myId}. 
      What's your name? 
     </h2> 
     <p><h:inputText id="user" 
         title="enter your name" 
         value="#{user.user}"> 
      </h:inputText> 
      <h:commandButton id="submit" value="Submit" 
          action="#{user.nav}"/> 
     </p> 
     <h:message showSummary="true" showDetail="false" 
        style="color: #d20005; 
        font-family: 'New Century Schoolbook', serif; 
        font-style: oblique; 
        text-decoration: overline" 
        id="errors1" 
        for="userNo"/> 
    </h:form> 
</ui:composition>

GlassFish журнала:

Warning: Unable to find component with ID userNo in view. 
Info: net.bounceme.doge.facelets.User setUser.. jklhjkghk 
Warning: #{user.nav}: javax.el.MethodNotFoundException: /WEB-INF/includes/login.xhtml @17,52 action="#{user.nav}": Method not found: [email protected]() 
javax.faces.FacesException: #{user.nav}: javax.el.MethodNotFoundException: /WEB-INF/includes/login.xhtml @17,52 action="#{user.nav}": Method not found: [email protected]() 
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:110) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:315) 
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790) 
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282) 
    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:198) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646) 
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167) 
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201) 
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175) 
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235) 
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112) 
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561) 
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545) 
    at java.lang.Thread.run(Thread.java:745) 
Caused by: javax.faces.el.MethodNotFoundException: javax.el.MethodNotFoundException: /WEB-INF/includes/login.xhtml @17,52 action="#{user.nav}": Method not found: [email protected]() 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:91) 
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) 
    ... 35 more 
Caused by: javax.el.MethodNotFoundException: /WEB-INF/includes/login.xhtml @17,52 action="#{user.nav}": Method not found: [email protected]() 
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:109) 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87) 
    ... 36 more 

Warning: StandardWrapperValve[Faces Servlet]: Servlet.service() for servlet Faces Servlet threw exception 
javax.el.MethodNotFoundException: /WEB-INF/includes/login.xhtml @17,52 action="#{user.nav}": Method not found: [email protected]() 
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:109) 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87) 
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:315) 
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790) 
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282) 
    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:198) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646) 
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167) 
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201) 
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175) 
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235) 
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112) 
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561) 
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545) 
    at java.lang.Thread.run(Thread.java:745)

источник

2015-02-17 Thufir

выражение а Метод <h:commandButton action>requires, а не значение выражения. Исключение говорит вам именно об этом. Нет ничего, что могло бы изменить это, кроме взлома исходного кода JSF.

Вы имеете 2 варианта:

Fix это быть истинный метод действия, а не свойство.
```
public String nav() { 
    return "some"; 
} 
```
Или просто вызовите геттер непосредственно.
```
action="#{user.getNav()}" 
```
Это только заканчивается неудачным и запутанным кодом.

источник

2015-02-17 08:18:44 BalusC

ах, поэтому метод действия является предпочтительным вариантом. Интересно. Спасибо за быстрый ответ. – Thufir

Это не отличается от показанного в разумной книге/учебнике JSF. Поэтому, если у вас его еще нет, возьмите его. – BalusC

Хорошо, я скачал один. – Thufir

Как использовать управляемое свойство боба в командной кнопке действия

ответ

Смежные вопросы