以编程方式获取导航案例< to-view-id>从faces-config.xml按结果

问题描述

有什么方法可以在后备bean中获得导航包的<to-view-id>吗?

Is there any way to get the <to-view-id> of a navigation case in the backing bean?

假设我要从结果success中获取<to-view-id>，该结果应该为page1.xhtml.有帮助功能吗?

Let's say I want to get the <to-view-id> from the outcome success, which is supposed to be page1.xhtml. Is there any helper function?

<navigation-rule>
    <from-view-id>start.xhtml</from-view-id>
    <navigation-case>
        <from-action>#{pageController.processPage1}</from-action>
        <from-outcome>success</from-outcome>
        <to-view-id>page1.xhtml</to-view-id>
    </navigation-case>
    <navigation-case>
        <from-action>#{pageController.processPage2}</from-action>
        <from-outcome>success</from-outcome>
        <to-view-id>page2.xhtml</to-view-id>
    </navigation-case>
</navigation-rule>

如果有帮助，我正在使用PrettyFaces.

If it helps, I'm using PrettyFaces.

推荐答案

您可以从ConfigurableNavigationHandler获取NavigationCase. NavigationCase代表已配置的导航案例，您可以从此对象获取所需的所有信息.观察:

You can get a NavigationCase, from a ConfigurableNavigationHandler. The NavigationCase represents a configured navigation case and you can get all the info you need from this object. Observe:

 ConfigurableNavigationHandler configNavHandler = (ConfigurableNavigationHandler)ctxt.getApplication().getNavigationHandler(); //assumes you already have an instance of FacesContext, named ctxt
 NavigationCase navCase = configNavHandler.getNavigationCase(ctxt,null,"success");

 String toViewId = navCase.getToViewId(ctx); // the <to-view-id>

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