使用什么技术将Systray前端写入webapp?

如果你想继续使用Java,你有两种选择:

• 使用挥杆/AWT。确保你使用Java 6和以上(你可以用你的应用程序安装它),因为它支持系统托盘(从API):

  TrayIcon trayIcon = null;
  if (SystemTray.isSupported()) {
      // get the SystemTray instance
      SystemTray tray = SystemTray.getSystemTray();
      // load an image
      Image image = Toolkit.getDefaultToolkit.getImage("");
      // create a action listener to listen for default action executed on
      // the tray icon
      ActionListener listener = new ActionListener() {
          public void actionPerformed(ActionEvent e) {
              // execute default action of the application
              // ...
          }
      };
      // create a popup menu
      PopupMenu popup = new PopupMenu();
      // create menu item for the default action
      MenuItem defaultItem = new MenuItem("");
      defaultItem.addActionListener(listener);
      popup.add(defaultItem);
      // / ... add other items
      // construct a TrayIcon
      trayIcon = new TrayIcon(image, "Tray Demo", popup);
      // set the TrayIcon properties
      trayIcon.addActionListener(listener);
      // ...
      // add the tray image
      try {
          tray.add(trayIcon);
      } catch (AWTException e) {
          System.err.println(e);
      }
      // ...
  } else {
      // disable tray option in your application or
      // perform other actions
      // ...
  }
  // ...
  // some time later
  // the application state has changed - update the image
  if (trayIcon != null) {
      trayIcon.setImage(updatedImage);
  }
  // ...
  

• 使用 SWT / JFace . 以下是一个例子(摘自 here ):

  public static void main(String[] args) {
      Display display = new Display();
      Shell shell = new Shell(display);
      Image image = new Image(display, 16, 16);
      final Tray tray = display.getSystemTray();
      if (tray == null) {
          System.out.println("The system tray is not available");
      } else {
          final TrayItem item = new TrayItem(tray, SWT.NONE);
          item.setToolTipText("SWT TrayItem");
          item.addListener(SWT.Show, new Listener() {
              public void handleEvent(Event event) {
                  System.out.println("show");
              }
          });
          item.addListener(SWT.Hide, new Listener() {
              public void handleEvent(Event event) {
                  System.out.println("hide");
              }
          });
          item.addListener(SWT.Selection, new Listener() {
              public void handleEvent(Event event) {
                  System.out.println("selection");
              }
          });
          item.addListener(SWT.DefaultSelection, new Listener() {
              public void handleEvent(Event event) {
                  System.out.println("default selection");
              }
          });
          final Menu menu = new Menu(shell, SWT.POP_UP);
          for (int i = 0; i < 8; i++) {
              MenuItem mi = new MenuItem(menu, SWT.PUSH);
              mi.setText("Item" + i);
              mi.addListener(SWT.Selection, new Listener() {
                  public void handleEvent(Event event) {
                      System.out.println("selection " + event.widget);
                  }
              });
              if (i == 0)
                  menu.setDefaultItem(mi);
          }
          item.addListener(SWT.MenuDetect, new Listener() {
              public void handleEvent(Event event) {
                  menu.setVisible(true);
              }
          });
          item.setImage(image);
      }
      shell.setBounds(50, 50, 300, 200);
      shell.open();
      while (!shell.isDisposed()) {
          if (!display.readAndDispatch())
              display.sleep();
      }
      image.dispose();
      display.dispose();
  }
  

使用AdobeAir和Blazeds或LCD,您可以轻松构建这类应用程序。

我会选择免费帕斯卡。它本身编译成WINDOWS/MAC/Linux,因此,您不需要安装任何其他框架(.NET、Java、Air)。只有一个可执行文件,就这样。

我同意 James :如果你对flex有投资和诀窍,用空气来扩展它是有意义的。

至于有效负载——如果您只是需要不时“弹出”通知,那么RSS就是解决问题的方法。否则,您将拥有类似于XML REST的服务,因为它很容易设置,并且从长远来看会给您带来灵活性。