java - 远程桌面关闭

Question

我编写了一个程序来监视联网位置中的 Activity 计算机，并完美地将 IP 地址显示到 JList(jList1)。当我单击列表中的 IP 地址之一，然后右键单击鼠标时，将出现一个 JPopupMenu，其中包含“关机”菜单。当我尝试从弹出菜单中单击“关闭”菜单时，显示错误:

Apr 14, 2011 1:57:07 PM UsernamePasswordPackage.NetCafeTime$9 actionPerformed SEVERE: null java.lang.RuntimeException: Unsupported operating system.
        at UsernamePasswordPackage.NetCafeTime.shutdown(NetCafeTime.java:359)
        at UsernamePasswordPackage.NetCafeTime$9.actionPerformed(NetCafeTime.java:444)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
        at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
        at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:809)
        at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:850)
        at java.awt.Component.processMouseEvent(Component.java:6267)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
        at java.awt.Component.processEvent(Component.java:6032)
        at java.awt.Container.processEvent(Container.java:2041)
        at java.awt.Component.dispatchEventImpl(Component.java:4630)
        at java.awt.Container.dispatchEventImpl(Container.java:2099)
        at java.awt.Component.dispatchEvent(Component.java:4460)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
        at java.awt.Container.dispatchEventImpl(Container.java:2085)
        at java.awt.Window.dispatchEventImpl(Window.java:2478)
        at java.awt.Component.dispatchEvent(Component.java:4460)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

我用来显示弹出菜单的代码:

public void showProjectMenu(MouseEvent e){
    JPopupMenu menu = new JPopupMenu();
    JMenuItem menuItem;
    menuItem = new JMenuItem("Shutdown");
    menuItem.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent ev){
            //JOptionPane.showMessageDialog(null, "newline");
            try {
                shutdown();
            } catch (RuntimeException ex) {
                Logger.getLogger(NetCafeTime.class.getName()).log(Level.SEVERE, null, ex);
            } catch (IOException ex) {
                Logger.getLogger(NetCafeTime.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    });
    menu.add(menuItem);
    menu.show(e.getComponent(),e.getX(),e.getY());
}

鼠标点击事件代码:

   private void jList1MousePressed(java.awt.event.MouseEvent evt) {
    if(SwingUtilities.isRightMouseButton(evt)&&!jList1.isSelectionEmpty()&&jList1.locationToIndex(evt.getPoint())==jList1.getSelectedIndex()){
            showProjectMenu(evt);
        }
    }

    private void jList1MouseReleased(java.awt.event.MouseEvent evt) {
    if(SwingUtilities.isRightMouseButton(evt)&&!jList1.isSelectionEmpty()&&jList1.locationToIndex(evt.getPoint())==jList1.getSelectedIndex()){
            showProjectMenu(evt);
        }
    }

我用来显示弹出菜单的代码:

public void showProjectMenu(MouseEvent e){
    JPopupMenu menu = new JPopupMenu();
    JMenuItem menuItem;
    menuItem = new JMenuItem("Shutdown");
    menuItem.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent ev){
            //JOptionPane.showMessageDialog(null, "newline");
            try {
                shutdown();
            } catch (RuntimeException ex) {
                Logger.getLogger(NetCafeTime.class.getName()).log(Level.SEVERE, null, ex);
            } catch (IOException ex) {
                Logger.getLogger(NetCafeTime.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    });
    menu.add(menuItem);
    menu.show(e.getComponent(),e.getX(),e.getY());
}

我用来通过 IP 地址关闭另一台电脑的代码:

public void shutdown()throws RuntimeException, IOException{
    String shutdownCommand;
    String operatingSystem = System.getProperty("os.name");
    if("Linux".equals(operatingSystem)||"Mac OS X".equals(operatingSystem)){
        shutdownCommand = "shutdown -h now";
    }else if("windows".equals(operatingSystem)){
        shutdownCommand = "shutdown.exe -s -t 0";
    }else{
        throw new RuntimeException("Unsupported operating system.");
    }
    Runtime.getRuntime().exec(shutdownCommand);
}

问题是，我无法关闭另一台电脑...

任何形式的帮助将不胜感激，谢谢......

Answer 1

错误显示:“不支持的操作系统”，在您的关闭方法中，这是 RuntimeException 的消息，如果当前操作系统较近，则会抛出该消息“Linux”、“Max OS X”，也不是“Windows”。那么您检查过 System.getProperty("os.name") 实际返回的内容吗？

编辑:重新阅读您的问题后，我认为您想要关闭具有所选 IP 地址的计算机。因此，在您的关闭方法中，我认为您必须首先连接到该计算机并在那里执行 shutdown 命令。这意味着您需要在要远程关闭的每台计算机上运行服务器程序。要么编写自己的服务器，要么在每台服务器上安装 SSH 服务器并使用 JSch 连接到计算机。