本文整理了Java中com.vaadin.flow.component.UI.addBeforeEnterListener()方法的一些代码示例，展示了UI.addBeforeEnterListener()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。UI.addBeforeEnterListener()方法的具体详情如下：
包路径：com.vaadin.flow.component.UI
类名称：UI
方法名：addBeforeEnterListener

UI.addBeforeEnterListener介绍

[英]Add a listener that will be informed when a new set of components are going to be attached.

By the time the components are going to be attached, their state is already calculated, consider this when using the listener.

Listeners will be executed before any found observers.
[中]添加一个监听器，当一组新的组件要被连接时，它会被通知。
当组件将被附加时，它们的状态已经被计算，在使用侦听器时考虑这一点。
侦听器将在找到任何观察者之前执行。

代码示例

代码示例来源：origin: vaadin/cdi

@Override
public void fireUIInitListeners(UI ui) {
  ui.addAfterNavigationListener(uiEventListener);
  ui.addBeforeLeaveListener(uiEventListener);
  ui.addBeforeEnterListener(uiEventListener);
  ui.addPollListener(uiEventListener);
  super.fireUIInitListeners(ui);
}

代码示例来源：origin: com.vaadin/vaadin-cdi

@Override
public void fireUIInitListeners(UI ui) {
  ui.addAfterNavigationListener(uiEventListener);
  ui.addBeforeLeaveListener(uiEventListener);
  ui.addBeforeEnterListener(uiEventListener);
  ui.addPollListener(uiEventListener);
  super.fireUIInitListeners(ui);
}

代码示例来源：origin: com.holon-platform.vaadin/holon-vaadin-flow-spring

@Override
public void serviceInit(ServiceInitEvent event) {
  event.getSource().addUIInitListener(e -> {
    e.getUI().addBeforeEnterListener(new SecuredRouteBeforeEnterListener());
    LOGGER.debug(() -> "Secured route before enter listener setted up");
  });
}