我正在为我的服务器创建一个客户端，JMenu工作正常，直到我添加了applet，现在当我点击菜单查看下拉菜单时，它没有显示。我假设它隐藏在applet后面，但我无法解决它
public class Loader extends JApplet implements Serializable, ActionListener {
private static final long serialVersionUID = 7639088664641445302L;
private static final HashMap<String, String> THEME_LIST = new HashMap<String, String>();
private final String[] THEME_NAMES = { "Magma", "Emerald", "Raven", "Black Steel", "Challenger", "Sahara", "Silver", "Blue" };
public Properties params = new Properties();
public JFrame mainframe;
public JPanel mainpanel = new JPanel();
public static boolean useIsaac = false;
private static Robot robot;
private static final String HOME = System.getProperty("user.home") + "\\";
public static String THEME = "org.jvnet.substance.skin.SubstanceBusinessLookAndFeel";
public static String IP = "77.248.12.184";
public static boolean LOBBY_ENABLED;
public static boolean DISABLE_XTEA_CRASH = true;
public static boolean DISABLE_USELESS_PACKETS = true;
public static boolean DISABLE_RSA = false;
public static final int REVISION = 718;
public static int SUB_REVISION = 3;
public static Loader instance;
private JMenuItem forums, vote, donate;
private JCheckBoxMenuItem lastChecked;
private JMenu links, options, themes;
private JCheckBox lobbyCheckBox;
private JMenuBar menuBar;
public static void main(String[] args) throws Exception {
UIManager.setLookAndFeel(THEME);
JFrame.setDefaultLookAndFeelDecorated(true);
JDialog.setDefaultLookAndFeelDecorated(true);
JPopupMenu.setDefaultLightWeightPopupEnabled(true);
// final GUI gui = instance = (GUI) loadSerializedFile();
robot = new Robot();
final Loader gui = new Loader();
LOBBY_ENABLED = gui.lobbyCheckBox.isSelected();
gui.mainframe.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
storeSerializableClass(gui);
}
});
gui.mainframe.setVisible(true);
gui.startClient();
}
public void startClient() {
try {
client clnt = new client();
clnt.supplyApplet(this);
clnt.init();
clnt.start();
} catch (Exception exception) {
exception.printStackTrace();
}
}
public Loader() {
params.put("separate_jvm", "true");
params.put("boxbgcolor", "black");
params.put("image", "http://www.runescape.com/img/game/splash2.gif");
params.put("centerimage", "true");
params.put("boxborder", "false");
params.put("java_arguments", "-Xmx256m -Xss2m -Dsun.java2d.noddraw=true -XX:CompileThreshold=1500 -Xincgc -XX:+UseConcMarkSweepGC -XX:+UseParNewGC");
params.put("27", "0");
params.put("1", "0");
params.put("16", "false");
params.put("17", "false");
params.put("21", "1"); // WORLD ID
params.put("30", "false");
params.put("20", IP);
params.put("29", "");
params.put("11", "true");
params.put("25", "1378752098");
params.put("28", "0");
params.put("8", ".runescape.com");
params.put("23", "false");
params.put("32", "0");
params.put("15", "wwGlrZHF5gKN6D3mDdihco3oPeYN2KFybL9hUUFqOvk");
params.put("0", "IjGJjn4L3q5lRpOR9ClzZQ");
params.put("2", "");
params.put("4", "1"); // WORLD ID
params.put("14", "");
params.put("5", "8194");
params.put("-1", "QlwePyRU5GcnAn1lr035ag");
params.put("6", "0");
params.put("24", "true,false,0,43,200,18,0,21,354,-15,Verdana,11,0xF4ECE9,candy_bar_middle.gif,candy_bar_back.gif,candy_bar_outline_left.gif,candy_bar_outline_right.gif,candy_bar_outline_top.gif,candy_bar_outline_bottom.gif,loadbar_body_left.gif,loadbar_body_right.gif,loadbar_body_fill.gif,6");
params.put("3", "hAJWGrsaETglRjuwxMwnlA/d5W6EgYWx");
params.put("12", "false");
params.put("13", "0");
params.put("26", "0");
params.put("9", "77");
params.put("22", "false");
params.put("18", "false");
params.put("33", "");
params.put("haveie6", "false");
mainframe = new JFrame("Matrix RSPS");
mainframe.getContentPane().setLayout(new BorderLayout());
mainpanel.setLayout(new BorderLayout());
mainpanel.setPreferredSize(new Dimension(765, 503));
mainframe.getContentPane().add(mainpanel, "Center");
mainframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainpanel.add(this);
menuBar = new JMenuBar();
mainframe.setJMenuBar(menuBar);
lobbyCheckBox = new JCheckBox("Enable Lobby");
lobbyCheckBox.addActionListener(this);
lobbyCheckBox.setHorizontalTextPosition(SwingConstants.LEFT);
menuBar.add(lobbyCheckBox);
links = new JMenu("Links");
menuBar.add(links);
forums = new JMenuItem("Forums");
forums.addActionListener(this);
links.add(forums);
vote = new JMenuItem("Vote");
vote.addActionListener(this);
links.add(vote);
donate = new JMenuItem("Donate");
donate.addActionListener(this);
links.add(donate);
options = new JMenu("Options");
menuBar.add(options);
themes = new JMenu("Themes");
options.add(themes);
JCheckBoxMenuItem temp;
for (int i = 0; i < THEME_NAMES.length; i++) {
String theme = THEME_NAMES[i];
temp = new JCheckBoxMenuItem(theme);
temp.addActionListener(this);
if (THEME.equalsIgnoreCase(THEME_LIST.get(theme))) {
lastChecked = temp;
temp.setSelected(true);
}
themes.add(temp);
}
mainframe.pack();
mainframe.setVisible(true);
}
public String getParameter(String string) {
return (String) params.get(string);
}
public URL getDocumentBase() {
return getCodeBase();
}
public URL getCodeBase() {
try {
return new URL("http://" + IP);
} catch (Exception exception) {
exception.printStackTrace();
return null;
}
}
public static final Object loadSerializedFile() {
try {
File saveDirect = new File(HOME + "Saradomin");
File saveFile = new File(HOME + "Saradomin\\Client Save.sv");
if (!saveDirect.exists() || !saveFile.exists())
return new Loader();
ObjectInputStream in = new ObjectInputStream(new FileInputStream(saveFile));
Object object = in.readObject();
in.close();
return object;
} catch (Exception e) {
e.printStackTrace();
}
return new Loader();
}
public static final void storeSerializableClass(Serializable o) {
try {
File saveDirect = new File(HOME + "Saradomin");
File saveFile = new File(HOME + "Saradomin\\Client Save.sv");
if (!saveDirect.exists())
saveDirect.mkdir();
if (!saveFile.exists())
saveFile.createNewFile();
ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(saveFile));
out.writeObject(o);
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
static {
THEME_LIST.put("Magma", "org.jvnet.substance.skin.SubstanceMagmaLookAndFeel");
THEME_LIST.put("Emerald", "org.jvnet.substance.skin.SubstanceEmeraldDuskLookAndFeel");
THEME_LIST.put("Black Steel", "org.jvnet.substance.skin.SubstanceBusinessBlackSteelLookAndFeel");
THEME_LIST.put("Raven", "org.jvnet.substance.skin.SubstanceRavenGraphiteGlassLookAndFeel");
THEME_LIST.put("Challenger", "org.jvnet.substance.skin.SubstanceChallengerDeepLookAndFeel");
THEME_LIST.put("Sahara", "org.jvnet.substance.skin.SubstanceSaharaLookAndFeel");
THEME_LIST.put("Silver", "org.jvnet.substance.skin.SubstanceBusinessLookAndFeel");
THEME_LIST.put("Blue", "org.jvnet.substance.skin.SubstanceBusinessBlueSteelLookAndFeel");
}
private void openURL(String url) throws Exception {
Desktop.getDesktop().browse(new URI(url));
}
public String getFormattedDate() {
DateFormat dateFormat = new SimpleDateFormat("hh.mm.ss a");
Date date = new Date();
String formattedDate = dateFormat.format(date);
return formattedDate;
}
private Rectangle getGameScreen() {
Rectangle rect = this.getBounds();
rect.setLocation(this.getLocationOnScreen());
return rect;
}
private void confirmImage(BufferedImage createScreenCapture) {
new ConfirmImage(createScreenCapture);
}
@Override
public void actionPerformed(ActionEvent e) {
try {
String command = e.getActionCommand();
System.out.println(command);
String selectedTheme = THEME_LIST.get(e.getActionCommand());
if (selectedTheme != null) {
if (lastChecked != null)
lastChecked.setSelected(false);
lastChecked = (JCheckBoxMenuItem) e.getSource();
UIManager.setLookAndFeel(selectedTheme);
} else if (command.equalsIgnoreCase("enable lobby")) {
confirmImage(robot.createScreenCapture(getGameScreen()));//temp until screenshot is 100%
//LOBBY_ENABLED = lobbyCheckBox.isSelected();
} else if (command.equalsIgnoreCase("forums")) {
openURL("http://www.saradom.in/");
}
} catch (Exception e1) {
e1.printStackTrace();
}
}
private class ConfirmImage implements ActionListener {
private JFrame frame;
private JButton btnSave, btnDiscard, btnUpload;
private BufferedImage image;
public ConfirmImage(BufferedImage image) {
this.image = image;
openFrame();
}
public void openFrame() {
frame = new JFrame("Decide the fate of you screenshot.");
Insets insets = frame.getInsets();
frame.setSize(image.getWidth()+insets.left + insets.right, image.getHeight()+insets.top + insets.bottom);
frame.setResizable(false);
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
if (JOptionPane.showConfirmDialog(frame, "Are you sure you want to discard this image(you will not be able to get it back)?", "Confirm exit.", JOptionPane.OK_OPTION, 0, new ImageIcon("")) != 0) {
return;
}
frame.dispose();
}
});
frame.setDefaultCloseOperation(0);
JPanel contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
frame.setContentPane(contentPane);
contentPane.setLayout(null);
JLabel picLabel = new JLabel(new ImageIcon(image));
picLabel.setBounds(0, 0, image.getWidth(), image.getHeight());
contentPane.add(picLabel);
JMenuBar menuBar = new JMenuBar();
frame.setJMenuBar(menuBar);
btnSave = new JButton("Save Image");
menuBar.add(btnSave);
btnSave.addActionListener(this);
btnDiscard = new JButton("Discard Image");
menuBar.add(btnDiscard);
btnDiscard.addActionListener(this);
btnUpload = new JButton("Upload Image");
menuBar.add(btnUpload);
btnUpload.addActionListener(this);
JPanel panel = new JPanel();
panel.setLayout(null);
panel.setBounds(0, 0, 484, 362);
contentPane.add(panel);
frame.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e) {
try {
String action = e.getActionCommand();
if (action.equalsIgnoreCase("save image")) {
ImageIO.write(image, "PNG", new File(HOME + "Saradomin" + getFormattedDate() + ".png"));
JOptionPane.showConfirmDialog(frame, "Screenshot saved to: " + HOME + "Saradomin", "Screenshot save completed.", JOptionPane.PLAIN_MESSAGE);
frame.dispose();
} else if (action.equalsIgnoreCase("discard image")) {
if (JOptionPane.showConfirmDialog(frame, "Are you sure you want to discard this image(you will not be able to get it back)?", "Confirm exit.", JOptionPane.OK_OPTION, 0, new ImageIcon("")) != 0) {
return;
}
frame.dispose();
} else if (action.equalsIgnoreCase("upload image")) {
new ImageLink(Utils.upload(image));
}
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
}
编辑：我知道为什么这会导致你们不必继续在下面发布原因，我正在寻求一种方法。
答案 0 :(得分：5)
我对frame.setContentPane(contentPane)保持警惕，contentPane有效用{默认} FlowLayout取代 frame.add(contentPane)。而是根据需要使用contentPane，转发“到{{1}}。”另一个名称也可能有所帮助。另请参阅Using Top-Level Containers和此answer。