代码在正常运行时不工作，但在调试（eclipse）中工作

本文介绍了代码在正常运行时不工作，但在调试（eclipse）中工作的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 我真的很困惑：当我在eclipse中正常运行我的程序时，我的一些代码不起作用，但是当我使用调试模式分别运行每个步骤时，我的代码不起作用。

代码：

public void showConnectDialog（）{ ConnectDialog connectDialog = new ConnectDialog ）; connectDialog.setVisible（true）; //直到这里，代码运行 while（！connectDialog.getConnected（））{}; //下一行只在debug 中运行JOptionPane.showMessageDialog（connectDialog，Connected，Connected，JOptionPane.INFORMATION_MESSAGE）; }

连接器（尽快启动（作为线程）因为用户在对话框中点击连接）：

私有类ServerConnector实现ActionListener，Runnable { @Override public void actionPerformed（ActionEvent e）{ if（！IP_field.getText（）。equals（））{ if（！isConnecting）{ new Thread（new ServerConnector（），ServerConnector）。start（）; } } else { JOptionPane.showMessageDialog（dialog，输入IP地址，输入IP， JOptionPane.WARNING_MESSAGE）; } } @Override public void run（）{ try { setConnecting真正）; Socket socket = connect（）; if（socket！= null）{ ObjectOutputStream oOut = new ObjectOutputStream（socket.getOutputStream（））; ObjectInputStream oIn = new ObjectInputStream（socket.getInputStream（））; if（login（oOut，oIn））{ isConnected = true; setConnecting（false）; } else { socket.close（）; } setConnecting（false）; } } catch（RSPException e）{ e.printStackTrace（）; System.exit（1）; } catch（异常e）{ //如果发生异常，setConnecting（）将为true。这个 //不好，所以它必须设置为false e.printStackTrace（）; setConnecting（false）; } } 私有布尔登录（ObjectOutputStream oOut，ObjectInputStream oIn） throws ClassNotFoundException，IOException，RSPException { //发送登录请求动作： oOut.writeObject（new LoginAction（ActionSender.CLIENT，getID（）， getPassword（）））; Object obj = oIn.readObject（）; if（obj instanceof LoginActionResult）{ LoginActionResult result =（LoginActionResult）obj; if（result.getResult（）== LoginResults.SUCCES）{ return true; } else if（result.getResult（）== LoginResults.FAIL_ON_ID）{ JOptionPane.showMessageDialog（dialog，Invalid password or ID，无法登录， JOptionPane.ERROR_MESSAGE）; 返回false; } else if（result.getResult（）== LoginResults.FAIL_ON_PASSWORD）{ JOptionPane.showMessageDialog（dialog，Invalid password or ID，无法登录， JOptionPane.ERROR_MESSAGE）; 返回false; } else if（result.getResult（）== LoginResults.SERVER_FULL）{ JOptionPane.showMessageDialog（dialog，无法连接：\ n+ 服务器已满，无法连接， JOptionPane.WARNING_MESSAGE）; 返回false; } else { return false; } } else { System.out.println（obj）; 抛出新的RSPException（服务器不遵循协议）; } } private void setConnecting（布尔连接）{ if（连接）{ SwingUtilities.invokeLater （new Runnable（）{ @Override public void run（）{ connectButton.setEnabled（false）; } }）; SwingUtilities.invokeLater（new Runnable（）{ @Override public void run（）{ connectButton.setText（Connecting ...）; } }）; } else { SwingUtilities.invokeLater（new Runnable（）{ @Override public void run（）{ connectButton.setText（Connect）; } }）; SwingUtilities.invokeLater（new Runnable（）{ @Override public void run（）{ connectButton.setEnabled（true）; } }）; } isConnecting =连接; } private String getAddressFromTextField（）{ return IP_field.getText（）; } private InetAddress getInetAddress（String fullAddress）{ try { if（fullAddress.contains（：））{ String [] splitAddress = fullAddress.split（：）; return InetAddress.getByName（splitAddress [0]）; } else {返回InetAddress.getByName（fullAddress）; } } catch（UnknownHostException e）{ return null; } } private int getPort（String fullAddress）{ try { String [] splittedAddress = fullAddress 。分裂（：）; return Integer.valueOf（splittedAddress [1]）; } catch（NumberFormatException ex）{ return -1; } catch（NullPointerException | ArrayIndexOutOfBoundsException | PatternSyntaxException ex）{ //返回默认端口值：25566，因为没有给出端口 return 25566; } } @SuppressWarnings（resource） private Socket connect（）{ Socket socket =空值; InetAddress address = null; if（（address = getInetAddress（getAddressFromTextField（）））== null）{ return null; } int port = getPort（getAddressFromTextField（））; try { socket = new Socket（address，port）; } catch（ConnectException e）{ Socket retrySocket = null; if（（retrySocket = retryConnect（address，port））== null）{ JOptionPane.showMessageDialog（dialog，Connection timed out，Failed to connect ， JOptionPane.ERROR_MESSAGE）; setConnecting（false）; } else { socket = retrySocket; } } catch（IOException e）{ e.printStackTrace（）; } return socket; } private Socket retryConnect（InetAddress address，int port）{ Thread waitThread = new Thread（new Runnable（）{ @Override public void run（）{ try { //等待15（000）（milli）秒，然后停止 //尝试连接 //一秒（1000毫秒）用于调试和测试 Thread.sleep（1000）; } catch（InterruptedException e）{ e .printStackTrace（）; } } }）; waitThread.start（）; while（waitThread.isAlive（））{ try { return new Socket（address，port）; } catch（ConnectException e）{ //什么都不做，会重新尝试连接。 } catch（IOException e）{ e.printStackTrace（）; } } 返回null; } private String getID（）{ return ID_field.getText（）; } private String getPassword（）{ if（getID（）。equals（master））{ returnmasterPassword } else { return new String（passwordField.getPassword（））; } } }

$一旦连接到服务器，b $ b

getConnected（）返回 true 。连接器在单独的线程上运行。

编辑：我试图将代码放在 getConnected（） / code>同时阻止，然后它工作。为什么它不工作呢？

解决方案

我有同样的问题，但有一些更多的规范。该代码在32位工作正常，但是我在64位中出现了这个问题（我使用本机库，所以我需要维护两者）。

我发现的解决方案是添加Thread.sleep（）在while循环中。我不知道为什么它的工作，所以你的猜测是一样好我的。

更好的解决方案可能会实现一个观察者模式，而不是有无限循环。但是这需要一些重新分解。

I'm really confused by this: some of my code is not working when i run my program normally in eclipse, but it does wok when i run through each step separately using the debug mode.

Code:

public void showConnectDialog() { ConnectDialog connectDialog = new ConnectDialog(); connectDialog.setVisible(true); //Until here, code runs while(! connectDialog.getConnected()) {}; //The next line does only run in debug JOptionPane.showMessageDialog(connectDialog, "Connected", "Connected", JOptionPane.INFORMATION_MESSAGE); }

The connector (is started (as a thread) as soon as the user hits 'connect' in the dialog):

private class ServerConnector implements ActionListener, Runnable { @Override public void actionPerformed(ActionEvent e) { if (! IP_field.getText().equals("")) { if (! isConnecting) { new Thread(new ServerConnector(), "ServerConnector").start(); } } else { JOptionPane.showMessageDialog(dialog, "Enter an IP address", "Enter IP", JOptionPane.WARNING_MESSAGE); } } @Override public void run() { try { setConnecting(true); Socket socket = connect(); if (socket != null) { ObjectOutputStream oOut = new ObjectOutputStream(socket.getOutputStream()); ObjectInputStream oIn = new ObjectInputStream(socket.getInputStream()); if (login(oOut, oIn)) { isConnected = true; setConnecting(false); } else { socket.close(); } setConnecting(false); } } catch (RSPException e) { e.printStackTrace(); System.exit(1); } catch (Exception e) { //If an exception occurs, setConnecting() will be true. This //not good, so it has to be set to false e.printStackTrace(); setConnecting(false); } } private boolean login(ObjectOutputStream oOut, ObjectInputStream oIn) throws ClassNotFoundException, IOException, RSPException { //Send login request action: oOut.writeObject(new LoginAction(ActionSender.CLIENT, getID(), getPassword())); Object obj = oIn.readObject(); if (obj instanceof LoginActionResult) { LoginActionResult result = (LoginActionResult) obj; if (result.getResult() == LoginResults.SUCCES) { return true; } else if (result.getResult() == LoginResults.FAIL_ON_ID) { JOptionPane.showMessageDialog(dialog, "Invalid password or ID", "Can't login", JOptionPane.ERROR_MESSAGE); return false; } else if (result.getResult() == LoginResults.FAIL_ON_PASSWORD) { JOptionPane.showMessageDialog(dialog, "Invalid password or ID", "Can't login", JOptionPane.ERROR_MESSAGE); return false; } else if (result.getResult() == LoginResults.SERVER_FULL) { JOptionPane.showMessageDialog(dialog, "Couldn't connect: \n" + "Server is full", "Failed to connect", JOptionPane.WARNING_MESSAGE); return false; } else { return false; } } else { System.out.println(obj); throw new RSPException("Server is not following the protocol."); } } private void setConnecting(boolean connecting) { if (connecting) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { connectButton.setEnabled(false); } }); SwingUtilities.invokeLater(new Runnable() { @Override public void run() { connectButton.setText("Connecting..."); } }); } else { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { connectButton.setText("Connect"); } }); SwingUtilities.invokeLater(new Runnable() { @Override public void run() { connectButton.setEnabled(true); } }); } isConnecting = connecting; } private String getAddressFromTextField() { return IP_field.getText(); } private InetAddress getInetAddress(String fullAddress) { try { if (fullAddress.contains(":")) { String[] splitAddress = fullAddress.split(":"); return InetAddress.getByName(splitAddress[0]); } else { return InetAddress.getByName(fullAddress); } } catch (UnknownHostException e) { return null; } } private int getPort(String fullAddress) { try { String[] splittedAddress = fullAddress.split(":"); return Integer.valueOf(splittedAddress[1]); } catch (NumberFormatException ex) { return -1; } catch (NullPointerException | ArrayIndexOutOfBoundsException | PatternSyntaxException ex) { //Returning default port value: 25566, because no port was given return 25566; } } @SuppressWarnings("resource") private Socket connect() { Socket socket = null; InetAddress address = null; if ((address = getInetAddress(getAddressFromTextField())) == null) { return null; } int port = getPort(getAddressFromTextField()); try { socket = new Socket(address, port); } catch (ConnectException e ) { Socket retrySocket = null; if ((retrySocket = retryConnect(address, port)) == null) { JOptionPane.showMessageDialog(dialog, "Connection timed out", "Failed to connect", JOptionPane.ERROR_MESSAGE); setConnecting(false); } else { socket = retrySocket; } } catch(IOException e) { e.printStackTrace(); } return socket; } private Socket retryConnect(InetAddress address, int port) { Thread waitThread = new Thread(new Runnable() { @Override public void run() { try { //Will wait 15(000) (milli)seconds before stopping with //trying to connect. //One second (1000 millis) is for debugging and testing Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } }); waitThread.start(); while (waitThread.isAlive()) { try { return new Socket(address, port); } catch (ConnectException e) { //Do nothing, will re-attempt to connect. } catch (IOException e) { e.printStackTrace(); } } return null; } private String getID() { return ID_field.getText(); } private String getPassword() { if (getID().equals("master")) { return "masterPassword"; } else { return new String(passwordField.getPassword()); } } }

getConnected() returns true as soon as it's connected to the server. The connector is running on a separate thread.

EDIT: I tried to put code in the getConnected() while block, and then it works. Why does it works then and not else?

解决方案

I had the same Problem, but with some more specification. The code was working fine in 32bit but I had this issue in 64bit (I am using native library so I need to maintain both).

The solution I found is to add Thread.sleep() in the while loop. I don't know why it works, so your guess is as good as mine.

A better solution would probably to implement an Observer Pattern instead of having an infinite loop. But that would require some re-factoring.