public class StageDecorateTest extends Application{

    public static void main(String[] args) {
        StageDecorateTest.launch();
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        Parent root = FXMLLoader.load(StageDecorateTest.class.getResource("form.fxml"));
        //只需切换下面一条setScene为StageDecorate.decorate()即可
        //primaryStage.setScene(new Scene(root)); 
        StageDecorate.decorate(primaryStage,root);
        primaryStage.setTitle("一卡通用户");
        primaryStage.show();
    }
}