我试图连接我的服务器应用程序和客户端应用程序，一个在我的计算机（主机）上另一个在我的客户计算机（客户端）上当我在我的计算机上测试我的应用程序时，一切都正常连接并发送消息等但是当我为我的客人计算机启动JAR文件，它将无法连接它只会关闭流...在wifi配置等环境中，我有什么关键吗？这是我的第一个Socket应用程序，所以我显然不是这方面的专家，但如果你能指出我正确的方向或指出问题，那将是非常感谢。
主持人：
public class EchoClient {
public static void main(String[] args) throws IOException {
String serverIP = InetAddress.getLocalHost().getHostAddress();
System.out.println(serverIP);
EchoRun er = new EchoRun(serverIP);
er.startRunning();
}
}
public class Echo extends JFrame implements ActionListener {
private ObjectOutputStream output;
private ObjectInputStream input;
private Socket socket;
private JTextField userText;
private JTextArea chatWindow;
private ServerSocket server;
private ServerSocket server2;
private Socket connection;
private Socket connection2;
public Echo() {
super(" Echo Server");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(500, 500);
System.out.println("Server Started");
userText = new JTextField();
userText.setEditable(false);
chatWindow = new JTextArea();
userText.addActionListener(
new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
sendMessage(e.getActionCommand());
userText.setText(" ");
}
});
add(userText, BorderLayout.SOUTH);
add(new JScrollPane(chatWindow));
add(chatWindow, BorderLayout.CENTER);
setVisible(true);
}
// let user tyope in the jtextarea
public void startRunning() {
try {
server = new ServerSocket(2014, 100);
while (true) {
try {
// will start seperate thread for downloading voice file
Thread dow = new Thread(new downloadVoiceFile());
dow.start();
Thread fileListener = new Thread(new fileListener());
fileListener.start();
waitForConnection();
setUpStreams();
whileChatting();
} catch (EOFException eofExcption) {
showMessage("\n Server Offline");
} finally {
close();
}
}
} catch (IOException ioException) {
ioException.printStackTrace();
}
}
private void waitForConnection() throws IOException {
showMessage("\nWaiting For Clients");
connection = server.accept();
showMessage(" Now Connected To " + connection.getInetAddress().getHostName());
}
private void setUpStreams() throws IOException {
output = new ObjectOutputStream(connection.getOutputStream());
output.flush();
input = new ObjectInputStream(connection.getInputStream());
showMessage("\n Streams Established");
}
private void whileChatting() throws IOException {
String message = "\nYou Are Now Connected";
sendMessage(message);
ableToType(true);
do {
try {
message = (String) input.readObject();
showMessage("\n" + message);
} catch (ClassNotFoundException classNotFoundException) {
showMessage("\n Unknown Error ");
}
} while (!message.equals("CLIENT END"));
}
private void close() {
showMessage("\n Closing Connections");
ableToType(false);
try {
output.close();
input.close();
connection.close();
} catch (IOException ioException) {
ioException.printStackTrace();
}
}
private void sendMessage(String message) {
try {
output.writeObject("Server -" + message);
output.flush();
showMessage("\n SERVER -" + message);
} catch (IOException ioException) {
chatWindow.append("Cannot Send That Message try AGain");
}
}
private void showMessage(final String text) {
SwingUtilities.invokeLater(
new Runnable() {
@Override
public void run() {
chatWindow.append(text);
}
}
);
}
public void ableToType(final boolean tof) {
SwingUtilities.invokeLater(
new Runnable() {
@Override
public void run() {
userText.setEditable(tof);
}
}
);
}
public static void main(String[] args) throws IOException {
Echo echo = new Echo();
echo.startRunning();
}
public void downloadVoiceFile() throws IOException {
System.out.println("hello from download");
Thread dow = new Thread(new downloadVoiceFile());
dow.start();
}
@Override
public void actionPerformed(ActionEvent e) {
}
}
CLIENT:
public class EchoRun extends JFrame implements ActionListener, KeyListener, Runnable {
/*
Audio Vars
*/
String voiceOutput = "output.wav";
TargetDataLine line;
double duration, seconds;
AudioInputStream audioInputStream;
/*
Send File VARS
*/
private final int BUFFER_SIZE = 128000;
private File soundFile;
private AudioInputStream audioStream;
private AudioFormat audioFormat;
private SourceDataLine sourceLine;
/*
App VARS main
*/
private JButton file, mic;
String errStr;
private ObjectOutputStream output;
private ObjectInputStream input;
private Socket socket;
private JTextField userText;
private JTextArea chatWindow;
private ServerSocket server;
private Socket connection;
private Socket connection2;
private Socket connection3;
private String message = "";
private String serverIP;
Thread thread;
JToolBar toolbar;
public EchoRun(String host) {
super(" Echo Client");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(500, 500);
setLookAndFeel();
System.out.println("Server Started");
userText = new JTextField();
userText.setEditable(false);
chatWindow = new JTextArea();
mic = new JButton("Microphone");
mic.setFont(new Font("Serif", Font.BOLD, 14));
mic.setForeground(Color.blue);
userText.addKeyListener(this);
file = new JButton("Send File");
file.addActionListener(this);
file.setFont(new Font("Serif", Font.BOLD, 14));
file.setForeground(Color.blue);
toolbar = new JToolBar();
toolbar.add(mic);
toolbar.addSeparator();
toolbar.add(file);
toolbar.addSeparator();
serverIP = host;
userText.addActionListener(
new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
sendMessage(e.getActionCommand());
} catch (IOException ex) {
Logger.getLogger(EchoClient.class.getName()).log(Level.SEVERE, null, ex);
}
userText.setText(" ");
}
});
add(userText, BorderLayout.SOUTH);
add(new JScrollPane(chatWindow));
add(chatWindow, BorderLayout.CENTER);
add("North", toolbar);
setVisible(true);
}
private void setLookAndFeel() {
try {
UIManager.setLookAndFeel("UIManager.getSystemLookAndFeelClassName");
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException |
UnsupportedLookAndFeelException e) {
}
}
public void startRunning() throws IOException {
try {
connectToServer();
setUpStreams();
whileChatting();
} catch (EOFException eofException) {
showMessage("Client Terminated Connection");
} catch (IOException ioException) {
ioException.printStackTrace();
} finally {
closeAll();
}
}
/*
Connect to server
*/
private void connectToServer() throws IOException {
// connect to text to text
showMessage("\nAttempting To Connect To Server For Main Chat");
connection = new Socket(InetAddress.getByName(serverIP), 2014);
showMessage("\nconnected to:" + connection.getInetAddress().getHostName());
}
private void setUpStreams() throws IOException {
output = new ObjectOutputStream(connection.getOutputStream());
output.flush();
input = new ObjectInputStream(connection.getInputStream());
showMessage("\nStreams Established");
}
private void whileChatting() throws IOException {
ableToType(true);
do {
try {
message = (String) input.readObject();
showMessage("\n" + message);
} catch (ClassNotFoundException classNotFoundException) {
showMessage("\n ERROR SENDING OBJECT");
}
} while (!message.equals("SERVER - END"));
}
private void closeAll() throws IOException {
showMessage("\n closing...");
ableToType(false);
try {
output.close();
input.close();
connection.close();
} catch (IOException ioException) {
ioException.printStackTrace();
}
}
private void sendMessage(String message) throws IOException {
try {
output.writeObject("\nCLIENT - " + message);
output.flush();
showMessage("\n Client - " + message);
} catch (IOException ioException) {
chatWindow.append("\n ERROR Sending Message");
ioException.printStackTrace();
}
}
private void showMessage(final String m) {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
chatWindow.append(m);
}
});
}
private void ableToType(final boolean tof) {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
userText.setEditable(tof);
}
});
}
/*
Handling the microphone
*/
public void stop() {
thread = null;
}
public void shutDown(String message) {
if ((errStr = message) != null && thread != null) {
thread = null;
System.err.println(errStr);
}
}
@Override
public void keyTyped(KeyEvent e) {
}
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyChar() == 'q') {
System.out.println("Started Recording");
start();
}
}
public void start() {
errStr = null;
thread = new Thread((Runnable) this);
thread.setName("Capture");
thread.start();
}
@Override
public void keyReleased(KeyEvent e) {
Object source = e.getSource();
if (e.getKeyChar() == 'q') {
System.out.println("Stopped Recording");
stop();
}
}
@Override
public void actionPerformed(ActionEvent e) {
Object source = e.getSource();
if (source == file) {
try {
chooseFile();
} catch (IOException ex) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
/*
Choose file method
*/
public void chooseFile() throws IOException {
JFileChooser fc = new JFileChooser();
fc.setDialogTitle("Send File");
fc.setMultiSelectionEnabled(true);
fc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
int dialog = fc.showSaveDialog(this);
if (dialog == JFileChooser.APPROVE_OPTION) {
File inputFile = fc.getSelectedFile();
inputFile.getName();
inputFile.getAbsoluteFile();
String nameOf = inputFile.getName();
System.out.println(" File: " + inputFile);
sendFile(inputFile);
}
}
public void sendFile(File inputFile) throws IOException {
connection3 = new Socket(InetAddress.getByName(serverIP), 1991);
System.out.println("File Being Sent");
OutputStream output2 = new ObjectOutputStream(connection3.getOutputStream());
output2.flush();
InputStream input2 = new ObjectInputStream(connection3.getInputStream());
System.out.println(input2);
DataOutputStream dos = null;
try {
dos = new DataOutputStream(connection3.getOutputStream());
} catch (IOException ex1) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex1);
System.out.println("error creating data input stream ");
}
FileInputStream fis = null;
try {
fis = new FileInputStream(inputFile);
} catch (FileNotFoundException ex1) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex1);
System.out.println("error in creating file input stream");
}
int count = 0;
byte[] buffer = new byte[4096];
try {
while ((count = fis.read(buffer)) > 0) {
dos.write(buffer, 0, count);
dos.flush();
System.out.println(fis);
}
} catch (IOException ex1) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex1);
System.out.println("error in loop writing");
}
try {
fis.close();
} catch (IOException ex1) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex1);
System.out.println("error closing fis");
}
try {
dos.flush();
dos.close();
} catch (IOException ex1) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex1);
System.out.println("or closing dos");
}
}
public void run() {
duration = 0;
audioInputStream = null;
// define the required attributes for our line,
// and make sure a compatible line is supported.
AudioFormat.Encoding encoding = AudioFormat.Encoding.PCM_SIGNED;
float rate = 44100.0f;
int channels = 2;
int frameSize = 4;
int sampleSize = 16;
boolean bigEndian = true;
AudioFormat format = new AudioFormat(encoding, rate, sampleSize, channels, (sampleSize / 8) * channels, rate, bigEndian);
DataLine.Info info = new DataLine.Info(TargetDataLine.class, format);
if (!AudioSystem.isLineSupported(info)) {
shutDown("Line matching " + info + " not supported.");
return;
}
// get and open the target data line for capture.
try {
line = (TargetDataLine) AudioSystem.getLine(info);
line.open(format, line.getBufferSize());
} catch (LineUnavailableException ex) {
shutDown("Unable to open the line: " + ex);
return;
} catch (SecurityException ex) {
shutDown(ex.toString());
//JavaSound.showInfoDialog();
return;
} catch (Exception ex) {
shutDown(ex.toString());
return;
}
// play back the captured audio data
ByteArrayOutputStream out = new ByteArrayOutputStream();
int frameSizeInBytes = format.getFrameSize();
int bufferLengthInFrames = line.getBufferSize() / 8;
int bufferLengthInBytes = bufferLengthInFrames * frameSizeInBytes;
byte[] data = new byte[bufferLengthInBytes];
int numBytesRead;
line.start();
while (thread != null) {
if ((numBytesRead = line.read(data, 0, bufferLengthInBytes)) == -1) {
break;
}
out.write(data, 0, numBytesRead);
}
// we reached the end of the stream.
// stop and close the line.
line.stop();
line.close();
line = null;
// stop and close the output stream
try {
out.flush();
out.close();
} catch (IOException ex) {
ex.printStackTrace();
}
// load bytes into the audio input stream for playback
byte audioBytes[] = out.toByteArray();
ByteArrayInputStream bais = new ByteArrayInputStream(audioBytes);
audioInputStream = new AudioInputStream(bais, format, audioBytes.length / frameSizeInBytes);
long milliseconds = (long) ((audioInputStream.getFrameLength() * 1000) / format.getFrameRate());
duration = milliseconds / 1000.0;
try {
AudioSystem.write(audioInputStream, AudioFileFormat.Type.WAVE, new File(voiceOutput));
sendSound();
} catch (IOException ex) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex);
}
}
public void sendSound() throws IOException {
connection2 = new Socket(InetAddress.getByName(serverIP), 1990);
System.out.println("send voice");
OutputStream output2 = new ObjectOutputStream(connection2.getOutputStream());
output2.flush();
InputStream input2 = new ObjectInputStream(connection2.getInputStream());
System.out.println(input2);
DataOutputStream dos = null;
try {
dos = new DataOutputStream(connection2.getOutputStream());
} catch (IOException ex1) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex1);
System.out.println("error creating data input stream ");
}
FileInputStream fis = null;
try {
fis = new FileInputStream(voiceOutput);
} catch (FileNotFoundException ex1) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex1);
System.out.println("error in creating file input stream");
}
int count = 0;
byte[] buffer = new byte[4096];
try {
while ((count = fis.read(buffer)) > 0) {
dos.write(buffer, 0, count);
dos.flush();
System.out.println(fis);
}
} catch (IOException ex1) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex1);
System.out.println("error in loop writing");
}
try {
fis.close();
} catch (IOException ex1) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex1);
System.out.println("error closing fis");
}
try {
dos.flush();
dos.close();
} catch (IOException ex1) {
Logger.getLogger(EchoRun.class.getName()).log(Level.SEVERE, null, ex1);
System.out.println("or closing dos");
}
}
}
答案 0 :(得分：0)
这一行：
String serverIP = InetAddress.getLocalHost().getHostAddress();
IIRC，这会将serverIP变量设置为本地主机的IP地址，即127.0.0.1。这是一个环回地址，仅适用于同一设备。
您需要告诉客户端连接到路由器分配的服务器的IP地址（通常以192.168开头...在小型网络上）。
如果您使用的是Windows设备，则可以使用命令提示符中的ipconfig命令查找此信息，或者我认为Linux上的ifconfig。