JavaFX TextField 文本验证

我有一个listener应用于我的领域：

nameTextField.addEventHandler(KeyEvent.KEY_TYPED, fieldChangeListener(50));

事件处理程序：

private EventHandler<KeyEvent> fieldChangeListener(final Integer max_Lengh) {
        return new EventHandler<KeyEvent>() {
            @Override
            public void handle(KeyEvent event) {
                TextField field = (TextField) event.getSource();
                String text = field.getText();
                // I need here something like:
                if(KeyEvent.VK_ENTER){
                // do special part for ENTER KEY
                }
            }
         }
}

问题是KeyEvent event来自javafx.scene.input.KeyEvent and KeyEvent.VK_ENTER from com.sun.glass.events.KeyEvent。我不知道如何确定 ENTER 键是否被触发KEY_TYPED event.

如果您想在文本更改时进行输入验证，您可以在textProperty of the TextField:

textField.textProperty().addListener((observable, oldValue, newValue) ->
    System.out.println("Input Validation"));

To detect when Enter is pressed, you can use the onActionProperty

textField.setOnAction(event -> System.out.println("Enter pressed: Word Check"));

如果你想阻止用户输入未通过验证逻辑的字符，那么不要监听textProperty˙，你可以使用TextFormatter (this TextField只接受整数）：

textField.setTextFormatter(new TextFormatter<>(change ->
         (change.getControlNewText().matches("([1-9][0-9]*)?")) ? change : null));