javafx系统托盘使用的awt的系统托盘组件来进行制作的，其中的Image、PopupMenu、MenuItem、TrayIcon、SystemTray等组件均为awt组件。

注意：使用前要加入该参数System.setProperty("java.awt.headless", "false");防止出现awt headless异常

private final static String title="系统";
private void systemTray(Stage primaryStage) {
        try {
            //设置为false时点击关闭按钮程序不会退出
            Platform.setImplicitExit(false);
            //加载系统托盘图标
            ClassPathResource trayClassPathResource = new ClassPathResource("images" + File.separator + "tray.png");
            URL url = trayClassPathResource.getURL();
              //使用awt的组件制作系统托盘按钮
            java.awt.Image image = Toolkit.getDefaultToolkit().getImage(url);
            PopupMenu trayMenu = new PopupMenu();
            MenuItem show = new MenuItem("显示");
            MenuItem exit = new MenuItem("退出");
            trayMenu.add(show);
            trayMenu.add(exit);
              //加载系统托盘组件
            TrayIcon trayIcon = new TrayIcon(image, title, trayMenu);
              //系统托盘图片自适应
            trayIcon.setImageAutoSize(true);
              //将系统托盘组件加载到系统托盘中
            SystemTray systemTray = SystemTray.getSystemTray();
            systemTray.add(trayIcon);
            //绑定系统托盘事件
            show.addActionListener(actionListener -> {
                Platform.runLater(() -> primaryStage.show());
            exit.addActionListener(actionListener -> {
                stop();
              //点击关闭按钮时隐藏场景
            primaryStage.setOnCloseRequest(windowEvent -> {
                primaryStage.hide();
        } catch (Exception e) {
            e.printStackTrace();