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我们有一个自定义 JSF 组件，它以特定方式呈现一些按钮和一个选择框。这是由扩展的类完成的UIInput。xhtml模板中使用的这个自定义组件如下所示：

<xx:fooComponent
    value="#{fooBean.someProperty}" 
    valueChangeListener="#{fooBean.someMethodInBean}"
    someOtherProperties="true" />

现在，由于我们从运行 JSF 2.0 的 JBoss 4.2.2 更改为运行内置 JSF 库的 JBoss 7.1.1，它抱怨someMethodInBean不是属性。当然，它不是属性，而是方法。世界上谁会将一个属性绑定到一个valueChangeListener？

起初我以为，这与方法在被引用 bean 的超类中有关，但事实并非如此。添加此特定方法FooBean没有任何区别。

所以我的问题是，他们做了什么改变，所以现在就坏了，我怎样才能以适合迁移的方式修复它？

编辑

该组件在我们的*.taglib.xml:

<!DOCTYPE facelet-taglib PUBLIC
  "-//Sun Microsystems, Inc.//DTD Facelet Taglib 1.0//EN"
  "http://java.sun.com/dtd/facelet-taglib_1_0.dtd">

<!-- ... -->
<tag>
    <tag-name>fooComponent</tag-name>       
    <component>
        <component-type>myProject.FooComponent</component-type>                     
    </component>        
</tag>

...这导致了以下声明faces-config.xml：

<component>
    <component-type>myProject.FooComponent</component-type>
    <component-class>com.myproject.somemore.UIFooComponent</component-class>
</component>

...这导致类UIFooComponent extends UIInput。

编辑 2

现在taglibxml看起来像这样：

<facelet-taglib version="2.0"
            xmlns="http://java.sun.com/xml/ns/javaee"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facelettaglibrary_2_0.xsd">

<tag>
    <tag-name>fooComponent</tag-name>       
    <component>
        <component-type>myProject.FooComponent</component-type>                     
    </component>
    <attribute>
        <name>valueChangeListener</name>
        <method-signature>void valueChanged(javax.faces.event.ValueChangeEvent)</method-signature>  
    </attribute>        
</tag>
</facelet-taglib>

尽管如此，他还是抱怨fooBean没有财产someMethodInBean。

编辑 3

堆栈跟踪是：

Caused by: javax.el.ELException: /abc/abc.xhtml: The class 'com.myproject.managedbeans.foo.FooBean' does not have the property 'someMethodInBean'.
    at com.sun.faces.facelets.compiler.AttributeInstruction.write(AttributeInstruction.java:94)
    at com.sun.faces.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:82)
    at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:302)
    at com.sun.faces.renderkit.html_basic.GridRenderer.renderRow(GridRenderer.java:185)
    at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:129)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1779)
    at javax.faces.render.Renderer.encodeChildren(Renderer.java:168)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1779)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782)
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:402)
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:125)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288)
    at org.apache.myfaces.tomahawk.application.ResourceViewHandlerWrapper.renderView(ResourceViewHandlerWrapper.java:93)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)
    ... 21 more
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1 回答 1

4

这表明 tag 属性没有在文件<method-signature>的组件<tag>声明中声明为 a ，.taglib.xml如下所示：

<attribute>
    <name>valueChangeListener</name>
    <method-signature>void valueChange(javax.faces.event.ValueChangeEvent)</method-signature>
</attribute>

确保如上正确声明了这一点。

Update: you need to make sure that you've declared the .taglib.xml file conform JSF 2.x Facelets XSD (and thus not a DTD as it was in legacy Facelets 1.x).

<facelet-taglib
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facelettaglibrary_2_0.xsd"
    version="2.0"
>

    <!-- Tags here -->

</facelet-taglib>
于 2012-06-15T12:49:22.410 回答