JSF2——从托管bean获取PhaseListener实例

有没有办法通过el上下文或应用程序上下文获取PhaseListener的当前实例？

您可以使用以下页面上的

标记将PhaseListener连接到UIViewRoot：

List<PhaseListener> phaseListeners = FacesContext.getCurrentInstance().getViewRoot().getPhaseListeners();

FacesContextFactory contextFactory = (FacesContextFactory)FactoryFinder.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY);    
LifecycleFactory lifecycleFactory = (LifecycleFactory)FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY);
Iterator<String> lifecycleIds = lifecycleFactory.getLifecycleIds(); 
while (lifecycleIds.hasNext()) { 
    String lifecycleId = lifecycleIds.next(); 
    Lifecycle lifecycle = lifecycleFactory.getLifecycle(lifecycleId);
    PhaseListener[] phaseListeners= lifecycle.getPhaseListeners();
}

List phaseListeners=FacesContext.getCurrentInstance（）.getViewRoot（）.getPhaseListeners（）；

它返回附加到此UIViewRoot实例的PhaseListener实例的列表

如果要在faces-config.xml文件中注册所有全局阶段侦听器，可以从LifeCycle实例中获取它们，如下所示：

List<PhaseListener> phaseListeners = FacesContext.getCurrentInstance().getViewRoot().getPhaseListeners();

FacesContextFactory contextFactory = (FacesContextFactory)FactoryFinder.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY);    
LifecycleFactory lifecycleFactory = (LifecycleFactory)FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY);
Iterator<String> lifecycleIds = lifecycleFactory.getLifecycleIds(); 
while (lifecycleIds.hasNext()) { 
    String lifecycleId = lifecycleIds.next(); 
    Lifecycle lifecycle = lifecycleFactory.getLifecycle(lifecycleId);
    PhaseListener[] phaseListeners= lifecycle.getPhaseListeners();
}

FacesContextFactory contextFactory=（FacesContextFactory）FactoryFinder.getFactory（FactoryFinder.FACES\u CONTEXT\u FACTORY）；
LifecycleFactory LifecycleFactory=（LifecycleFactory）FactoryFinder.getFactory（FactoryFinder.LIFECYCLE\u FACTORY）；
迭代器lifecycleIds=lifecycleFactory.getLifecycleIds（）；
而（lifecycleIds.hasNext（））{
字符串lifecycleId=lifecycleIds.next（）；
Lifecycle=lifecycleFactory.getLifecycle（lifecycleId）；
PhaseListener[]phaseListeners=lifecycle.getPhaseListeners（）；
}

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您可以通过以下方式获得JSF 2.0中的当前PhaseID：

PhaseId currentPhaseId = FacesContext.getCurrentInstance().getCurrentPhaseId();

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你没有回答这个问题。OP询问的是如何获取当前注册的

PhaseListener

s，而不是如何获取当前的相位ID，这一点实在太明显了。