javaFX 控件宽度随父元素宽度变化

@FXML
    private ScrollPane pane;
    @FXML
    private FlowPane flowPane;
 
    @Override
    public void initialize(URL location, ResourceBundle resources) {
        flowPane.prefWidthProperty().bind(pane.widthProperty());//宽度绑定为Pane宽度
    }