需要复合成分= QUOT;真＆QUOT;不被尊重 [英] Composite component required="true" not respected

问题描述

在复合材料：界面我已经定义的属性是这样的：

In the composite:interface I have defined an attribute like this:

<composite:attribute name="myAttribute" required="true"/>

现在，当我用我这样的复合成分，没有定义任何属性：

Now when I use my composite component like this, without defining any attributes:

<myTag:myCC/>

我预计会出现错误。它没有。我能怎么可能会丢失？

I would expect an error to occur. It doesn't. What could I possibly be missing?

推荐答案

这将只有当你的JSF项目阶段被设置为发展发生在<$ C $如下C>的web.xml ：

It will only occur if your JSF project stage is set to Development as follows in web.xml:

<context-param>
    <param-name>javax.faces.PROJECT_STAGE</param-name>
    <param-value>Development</param-value>
</context-param>

默认为生产。如果你开始看到其他几个错误/相关的警告，以发展错误设置上述背景下参数后，请不要感到惊讶。

It defaults to Production. Don't be surprised if you start to see several other errors/warnings related to "development mistakes" after setting the above context parameter.

在特定的情况下，你应该当你省略了必要的属性打开页面这样的事情中得到一个异常：

In your specific case you should get an exception during opening the page something like this when you omit the required attribute:

javax.faces.view.facelets.TagException: /test.xhtml @22,19 <my:composite> The following attribute(s) are required, but no values have been supplied for them: foo. 
    at com.sun.faces.facelets.tag.composite.InterfaceHandler.validateComponent(InterfaceHandler.java:232)
    at com.sun.faces.facelets.tag.composite.InterfaceHandler.apply(InterfaceHandler.java:125)
    at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:95)
    ...

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