作为一种变通办法，我重新编写了该组件，以将动作bean和动作方法作为两个单独的参数来解决，如下所示

As a work-around I rewrote the component to give action bean and action method as two separate parameters resolving them as following

xhtml:

<io:removeButton
             id="removeButton"
             actionBean="#{createAction}"
             actionMethod="removeRating"
             immediate="true"
             render=":#{rich:clientId('ratingTblId')}" />

复合成分:

<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:cc="http://java.sun.com/jsf/composite">
<!-- INTERFACE -->
<cc:interface>
    <cc:attribute name="actionBean" />
    <cc:attribute name="actionMethod" />
    <cc:attribute name="render" required="false" />
</cc:interface>

<!-- IMPLEMENTATION -->
<cc:implementation> 
    <h:commandButton 
       id="remove"
       action="#{cc.attrs.actionBean[cc.attrs.actionMethod]}" 
       onclick="if (!confirm('Do you really?')) { return false; }">
       <f:ajax execute="@this" render="#{cc.attrs.render}" />
    </h:commandButton> 
</cc:implementation>
</ui:composition>

还更改了操作方法签名以返回String而不是void.那看起来不再那么性感了，但是行得通. :-/

also changing the action methods signature to return String instead of void. That does not look that super sexy anymore, but works. :-/