如何本地化JSF 2复合组件 [英] How to localize JSF 2 composite components
问题描述
我对JSF中复合组件的本地化如何工作有一些疑问，我想了解它是如何工作的。
I have some doubts on how localization works with composite components in JSF, i want to understand well how it works.
所以我决定练习复合组件的本地化用一个小例子。
So i decided to practice localization for composite components with a little example.
按照建议我在复合组件所在的完全相同的文件夹中创建了一个.properties文件（WebContent / resources的子文件夹）
Following the recommendations i created a .properties file in the exactly same folder where the composite component is(A subfolder of WebContent/resources)
labelField1 = FIELD 1
labelField2 = FIELD 2
然后我用＃{cc.resourceBundleMap。将本地化文本添加到组件实现：
Then i used #{cc.resourceBundleMap. to add the localized text to the components implmentation:
<html>
<composite:interface>
...
</composite:interface>
<composite:implementation>
<h:form>
<h:outputText value="#{cc.resourceBundleMap.labelField1}"/>
...
<h:outputText value="#{cc.resourceBundleMap.labelField2}"/>
...
</h:form>
</composite:implementation>
</html>
运行应用程序时的问题是：
The problem when i run the application is this:
SEVERE: Error Rendering View[/index.xhtml]
javax.el.ELException: /resources/custom/demoCustomComponent.xhtml @14,63 value="#{cc.resourceBundleMap.labelField1}": java.lang.NullPointerException
....
Caused by: java.lang.NullPointerException
at javax.faces.component.UIComponent.findComponentResourceBundleLocaleMatch(UIComponent.java:1000)
...
我的问题是：
- 我是否需要以某种方式手动加载该消息包或这应该自动发生？
-Do i need to manually load somehow that message bunddle or this should happend automatically?
- 我的应用程序中其他消息包在复合组件所在的文件夹之外，会打扰这个吗？（我还在应用程序的其他地方有一个message_en.properties，用于模板和UI的其他部分）
-Can other message bundles in my app outside the folder where the composite component is, disturb this one?(I also have a message_en.properties somewhere else in the app, for the templates and other parts of the UI)
- 我该如何解决？
-How can i fix it?
推荐答案
res的文件名源包必须完全与组件的文件名相同。
The filename of the resource bundle has to be exactly the same as the component's filename.
所以，如果你有一个 demoCustomComponent.xhtml 表示复合组件的文件，然后你应该有一个 demoCustomComponent.properties 文件，其中包含（默认）本地化消息。您可以使用例如 demoCustomComponent_es.properties 对其进行国际化，但是路径中应该始终有一个默认值。
So, if you have a demoCustomComponent.xhtml file representing the composite component, then you should have a demoCustomComponent.properties file holding the (default) localized messages. You can internationalize it with for example demoCustomComponent_es.properties, but you should always have a default one in the path.
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