我在涉及复合组件和操作方法的 myfaces 2.1.10（与 TomEE 打包）遇到了一个奇怪的问题。本质上，看下面的例子，myfaces 似乎认为 action 方法是一个属性，并抛出一个 ElException。相同的代码适用于 Mojarra（在 jBoss 7.1.2 下）。
知道我做错了什么吗？
例外：
javax.el.ELException: /index.xhtml: Property 'act' not found on type com.company.dept.beans.SomeBean
org.apache.myfaces.view.facelets.compiler.AttributeInstruction.write(AttributeInstruction.java:55)
org.apache.myfaces.view.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:46)
org.apache.myfaces.view.facelets.compiler.UILeaf.encodeAll(UILeaf.java:505)
javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:541)
javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:541)
org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.renderView(FaceletViewDeclarationLanguage.java:1981)
org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:285)
javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:59)
org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:116)
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:241)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:199)
名为“菜单”的复合组件：
<composite:interface displayName="Navigation Menu Bar" shortDescription="Navigation menu bar">
<composite:attribute name="action" method-signature="java.lang.String action()"/>
</composite:interface>
<composite:implementation>
<div id="#{cc.clientId}:menuComponent">
<h:form>
<h:commandButton action="#{cc.attrs.action}" value="execute action" />
</h:form>
</div>
</composite:implementation>
以下页面使用上面的组件
<h:head>
</h:head>
<h:body>
<menu:menu action="#{someBean.act}"/>
</h:body>
</html>
带有 action 方法的 backing bean
package com.company.dept.beans;
import javax.inject.Named;
@Named
public class SomeBean {
public String act() {
System.out.println("ACT CALLED");
return "SUCCESS";
}
}