Java 具有多个客户端的聊天服务器
我是Java编程的初学者。我正在尝试建立一个聊天服务器，其中将有一个服务器和多个客户端（目前只有2个客户端） 逻辑： 假设有两个客户机A和B 当A向B发送消息时，该消息必须首先由服务器处理，然后传递给B，反之亦然 在窗口中，来自的消息应显示为（示例）Java 具有多个客户端的聊天服务器,java,swing,sockets,Java,Swing,Sockets,我是Java编程的初学者。我正在尝试建立一个聊天服务器，其中将有一个服务器和多个客户端（目前只有2个客户端） 逻辑： 假设有两个客户机A和B 当A向B发送消息时，该消息必须首先由服务器处理，然后传递给B，反之亦然 在窗口中，来自的消息应显示为（示例） A:嗨 B:嗨 A:你好吗 B:我很好 问题: 当我第一次运行服务器时，它会成功运行。 但是当我运行客户端时，窗口就卡住了，即它没有响应 我想知道的是，如何进行上述沟通？有效的代码是什么 请忽略UI设计。我只希望解决上述逻辑 请注意，您可能会发现我
A:嗨
B:嗨
A:你好吗
B:我很好 问题: 当我第一次运行服务器时，它会成功运行。
但是当我运行客户端时，窗口就卡住了，即它没有响应 我想知道的是，如何进行上述沟通？有效的代码是什么 请忽略UI设计。我只希望解决上述逻辑 请注意，您可能会发现我的代码效率低下，并且可能还有一些垃圾代码 类名：Server.java
package chatserver;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JFrame;
public class Server {
Socket soc;
ServerSocket s = null;
public Server() throws IOException
{
try
{
s = new ServerSocket(6633);
while(true)
{
soc =s.accept();
ServerHandle handle = new ServerHandle(soc);
Thread t1 = new Thread(handle);
t1.start();
}
}
catch(Exception e)
{
System.out.println(e);
//should be e.printStackTrace();
}
finally
{
if(s != null)
{
s.close();
}
}
}
public static void main(String[] args)
{
// TODO Auto-generated method stub
try {
new Server();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
package chatserver;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
public class ServerHandle implements Runnable {
Socket s1;
BufferedReader reader;
PrintWriter write;
String msg;
public ServerHandle(Socket s1)
{
this.s1 = s1;
}
public void run()
{
try {
reader = new BufferedReader(new InputStreamReader(s1.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s1.getOutputStream()));
while((msg = reader.readLine()) != null)
{
write.write(msg);
}
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally
{
try {
s1.close();
reader.close();
write.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
package chatserver;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import javax.swing.*;
public class Client implements ActionListener
{
JTextArea textArea;
private JFrame frmChatWindow;
private JTextArea textArea_1;
JTextField username;
JButton submit;
JFrame j;
JFrame jf;
BufferedReader reader;
PrintWriter write;
String msg;
Socket s;
public Client() throws Exception, IOException
{
try
{
s = new Socket("localhost", 6633);
reader = new BufferedReader(new InputStreamReader(s.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
j = new JFrame("PLAIN");
j.setBounds(500, 150, 300, 400);
JPanel panel = new JPanel();
j.add(panel);
GridBagLayout gb = new GridBagLayout();
panel.setLayout(gb);
GridBagConstraints c = new GridBagConstraints();
JLabel label = new JLabel("User Name");
c.gridx = 0;
c.gridy = 0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.NORTHWEST;
c.ipadx = 5;
c.ipady = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(label, c);
username = new JTextField(10);
c.gridx = 1;
c.gridy = 0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.ipadx = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(username, c);
JLabel password = new JLabel("Password");
c.gridx = 0;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.ipadx = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(password, c);
JPasswordField pass = new JPasswordField(10);
c.gridx = 1;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.insets = new Insets(7, 7, 7, 7);
panel.add(pass, c);
submit = new JButton("Submit");
c.gridx = 1;
c.gridy = 6;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.insets = new Insets(7, 7, 7, 7);
panel.add(submit, c);
submit.addActionListener(this);
j.setVisible(true);
j.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
while ((msg = reader.readLine()) != null)
{
display(msg);
}
}
catch (Exception e)
{
System.out.println(e);
}
finally
{
s.close();
reader.close();
write.close();
}
}
private void display(String msg2)
{
textArea_1.append("Server" + ": " + msg2);
}
public void actionPerformed(ActionEvent e)
{
// TODO Auto-generated method stub
j.dispose();
frmChatWindow = new JFrame();
frmChatWindow.setResizable(false);
frmChatWindow.setTitle("Chat Window");
frmChatWindow.setBounds(100, 100, 316, 300);
frmChatWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SpringLayout springLayout = new SpringLayout();
frmChatWindow.getContentPane().setLayout(springLayout);
textArea = new JTextArea();
springLayout.putConstraint(SpringLayout.WEST, textArea, 10, SpringLayout.WEST, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.SOUTH, textArea, 31, SpringLayout.SOUTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, textArea, 229, SpringLayout.WEST, frmChatWindow.getContentPane());
textArea.setLineWrap(true);
frmChatWindow.getContentPane().add(textArea);
JButton btnNewButton = new JButton("Send");
springLayout.putConstraint(SpringLayout.NORTH, textArea, 0, SpringLayout.NORTH, btnNewButton);
springLayout.putConstraint(SpringLayout.SOUTH, btnNewButton, -58, SpringLayout.SOUTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, btnNewButton, -10, SpringLayout.EAST, frmChatWindow.getContentPane());
frmChatWindow.getContentPane().add(btnNewButton);
JButton btnLogout = new JButton("Logout");
springLayout.putConstraint(SpringLayout.NORTH, btnLogout, 10, SpringLayout.NORTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, btnLogout, -10, SpringLayout.EAST, frmChatWindow.getContentPane());
frmChatWindow.getContentPane().add(btnLogout);
textArea_1 = new JTextArea();
textArea_1.setEditable(false);
textArea_1.append(null);
springLayout.putConstraint(SpringLayout.NORTH, textArea_1, 24, SpringLayout.NORTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.WEST, textArea_1, 10, SpringLayout.WEST, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.SOUTH, textArea_1, -19, SpringLayout.NORTH, textArea);
springLayout.putConstraint(SpringLayout.EAST, textArea_1, -6, SpringLayout.WEST, btnLogout);
frmChatWindow.getContentPane().add(textArea_1);
btnLogout.addActionListener(new Test2());
btnNewButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
String s = new String();
s = textArea.getText();
sendmsg(s);
getwrite();
}
});
frmChatWindow.setVisible(true);
}
private void getwrite()
{
write.write(username.getText());
}
public void sendmsg(String g)
{
textArea_1.append(username.getText() + " " + ": " + g + "\n");
}
class Test2 implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
frmChatWindow.dispose();
j.setVisible(true);
}
}
public static void main(String[] args)
{
// TODO Auto-generated method stub
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
try
{
new Client();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}
while((msg = reader.readLine()) != null)
{
write.write(msg);
}
s = new Socket("localhost", 6633);
reader = new BufferedReader(new InputStreamReader(s.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
类名：ServerHandle.java
package chatserver;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JFrame;
public class Server {
Socket soc;
ServerSocket s = null;
public Server() throws IOException
{
try
{
s = new ServerSocket(6633);
while(true)
{
soc =s.accept();
ServerHandle handle = new ServerHandle(soc);
Thread t1 = new Thread(handle);
t1.start();
}
}
catch(Exception e)
{
System.out.println(e);
//should be e.printStackTrace();
}
finally
{
if(s != null)
{
s.close();
}
}
}
public static void main(String[] args)
{
// TODO Auto-generated method stub
try {
new Server();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
package chatserver;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
public class ServerHandle implements Runnable {
Socket s1;
BufferedReader reader;
PrintWriter write;
String msg;
public ServerHandle(Socket s1)
{
this.s1 = s1;
}
public void run()
{
try {
reader = new BufferedReader(new InputStreamReader(s1.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s1.getOutputStream()));
while((msg = reader.readLine()) != null)
{
write.write(msg);
}
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally
{
try {
s1.close();
reader.close();
write.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
package chatserver;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import javax.swing.*;
public class Client implements ActionListener
{
JTextArea textArea;
private JFrame frmChatWindow;
private JTextArea textArea_1;
JTextField username;
JButton submit;
JFrame j;
JFrame jf;
BufferedReader reader;
PrintWriter write;
String msg;
Socket s;
public Client() throws Exception, IOException
{
try
{
s = new Socket("localhost", 6633);
reader = new BufferedReader(new InputStreamReader(s.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
j = new JFrame("PLAIN");
j.setBounds(500, 150, 300, 400);
JPanel panel = new JPanel();
j.add(panel);
GridBagLayout gb = new GridBagLayout();
panel.setLayout(gb);
GridBagConstraints c = new GridBagConstraints();
JLabel label = new JLabel("User Name");
c.gridx = 0;
c.gridy = 0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.NORTHWEST;
c.ipadx = 5;
c.ipady = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(label, c);
username = new JTextField(10);
c.gridx = 1;
c.gridy = 0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.ipadx = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(username, c);
JLabel password = new JLabel("Password");
c.gridx = 0;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.ipadx = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(password, c);
JPasswordField pass = new JPasswordField(10);
c.gridx = 1;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.insets = new Insets(7, 7, 7, 7);
panel.add(pass, c);
submit = new JButton("Submit");
c.gridx = 1;
c.gridy = 6;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.insets = new Insets(7, 7, 7, 7);
panel.add(submit, c);
submit.addActionListener(this);
j.setVisible(true);
j.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
while ((msg = reader.readLine()) != null)
{
display(msg);
}
}
catch (Exception e)
{
System.out.println(e);
}
finally
{
s.close();
reader.close();
write.close();
}
}
private void display(String msg2)
{
textArea_1.append("Server" + ": " + msg2);
}
public void actionPerformed(ActionEvent e)
{
// TODO Auto-generated method stub
j.dispose();
frmChatWindow = new JFrame();
frmChatWindow.setResizable(false);
frmChatWindow.setTitle("Chat Window");
frmChatWindow.setBounds(100, 100, 316, 300);
frmChatWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SpringLayout springLayout = new SpringLayout();
frmChatWindow.getContentPane().setLayout(springLayout);
textArea = new JTextArea();
springLayout.putConstraint(SpringLayout.WEST, textArea, 10, SpringLayout.WEST, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.SOUTH, textArea, 31, SpringLayout.SOUTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, textArea, 229, SpringLayout.WEST, frmChatWindow.getContentPane());
textArea.setLineWrap(true);
frmChatWindow.getContentPane().add(textArea);
JButton btnNewButton = new JButton("Send");
springLayout.putConstraint(SpringLayout.NORTH, textArea, 0, SpringLayout.NORTH, btnNewButton);
springLayout.putConstraint(SpringLayout.SOUTH, btnNewButton, -58, SpringLayout.SOUTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, btnNewButton, -10, SpringLayout.EAST, frmChatWindow.getContentPane());
frmChatWindow.getContentPane().add(btnNewButton);
JButton btnLogout = new JButton("Logout");
springLayout.putConstraint(SpringLayout.NORTH, btnLogout, 10, SpringLayout.NORTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, btnLogout, -10, SpringLayout.EAST, frmChatWindow.getContentPane());
frmChatWindow.getContentPane().add(btnLogout);
textArea_1 = new JTextArea();
textArea_1.setEditable(false);
textArea_1.append(null);
springLayout.putConstraint(SpringLayout.NORTH, textArea_1, 24, SpringLayout.NORTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.WEST, textArea_1, 10, SpringLayout.WEST, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.SOUTH, textArea_1, -19, SpringLayout.NORTH, textArea);
springLayout.putConstraint(SpringLayout.EAST, textArea_1, -6, SpringLayout.WEST, btnLogout);
frmChatWindow.getContentPane().add(textArea_1);
btnLogout.addActionListener(new Test2());
btnNewButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
String s = new String();
s = textArea.getText();
sendmsg(s);
getwrite();
}
});
frmChatWindow.setVisible(true);
}
private void getwrite()
{
write.write(username.getText());
}
public void sendmsg(String g)
{
textArea_1.append(username.getText() + " " + ": " + g + "\n");
}
class Test2 implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
frmChatWindow.dispose();
j.setVisible(true);
}
}
public static void main(String[] args)
{
// TODO Auto-generated method stub
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
try
{
new Client();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}
while((msg = reader.readLine()) != null)
{
write.write(msg);
}
s = new Socket("localhost", 6633);
reader = new BufferedReader(new InputStreamReader(s.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
类名：Client.java
package chatserver;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JFrame;
public class Server {
Socket soc;
ServerSocket s = null;
public Server() throws IOException
{
try
{
s = new ServerSocket(6633);
while(true)
{
soc =s.accept();
ServerHandle handle = new ServerHandle(soc);
Thread t1 = new Thread(handle);
t1.start();
}
}
catch(Exception e)
{
System.out.println(e);
//should be e.printStackTrace();
}
finally
{
if(s != null)
{
s.close();
}
}
}
public static void main(String[] args)
{
// TODO Auto-generated method stub
try {
new Server();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
package chatserver;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
public class ServerHandle implements Runnable {
Socket s1;
BufferedReader reader;
PrintWriter write;
String msg;
public ServerHandle(Socket s1)
{
this.s1 = s1;
}
public void run()
{
try {
reader = new BufferedReader(new InputStreamReader(s1.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s1.getOutputStream()));
while((msg = reader.readLine()) != null)
{
write.write(msg);
}
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally
{
try {
s1.close();
reader.close();
write.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
package chatserver;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import javax.swing.*;
public class Client implements ActionListener
{
JTextArea textArea;
private JFrame frmChatWindow;
private JTextArea textArea_1;
JTextField username;
JButton submit;
JFrame j;
JFrame jf;
BufferedReader reader;
PrintWriter write;
String msg;
Socket s;
public Client() throws Exception, IOException
{
try
{
s = new Socket("localhost", 6633);
reader = new BufferedReader(new InputStreamReader(s.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
j = new JFrame("PLAIN");
j.setBounds(500, 150, 300, 400);
JPanel panel = new JPanel();
j.add(panel);
GridBagLayout gb = new GridBagLayout();
panel.setLayout(gb);
GridBagConstraints c = new GridBagConstraints();
JLabel label = new JLabel("User Name");
c.gridx = 0;
c.gridy = 0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.NORTHWEST;
c.ipadx = 5;
c.ipady = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(label, c);
username = new JTextField(10);
c.gridx = 1;
c.gridy = 0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.ipadx = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(username, c);
JLabel password = new JLabel("Password");
c.gridx = 0;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.ipadx = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(password, c);
JPasswordField pass = new JPasswordField(10);
c.gridx = 1;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.insets = new Insets(7, 7, 7, 7);
panel.add(pass, c);
submit = new JButton("Submit");
c.gridx = 1;
c.gridy = 6;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.insets = new Insets(7, 7, 7, 7);
panel.add(submit, c);
submit.addActionListener(this);
j.setVisible(true);
j.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
while ((msg = reader.readLine()) != null)
{
display(msg);
}
}
catch (Exception e)
{
System.out.println(e);
}
finally
{
s.close();
reader.close();
write.close();
}
}
private void display(String msg2)
{
textArea_1.append("Server" + ": " + msg2);
}
public void actionPerformed(ActionEvent e)
{
// TODO Auto-generated method stub
j.dispose();
frmChatWindow = new JFrame();
frmChatWindow.setResizable(false);
frmChatWindow.setTitle("Chat Window");
frmChatWindow.setBounds(100, 100, 316, 300);
frmChatWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SpringLayout springLayout = new SpringLayout();
frmChatWindow.getContentPane().setLayout(springLayout);
textArea = new JTextArea();
springLayout.putConstraint(SpringLayout.WEST, textArea, 10, SpringLayout.WEST, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.SOUTH, textArea, 31, SpringLayout.SOUTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, textArea, 229, SpringLayout.WEST, frmChatWindow.getContentPane());
textArea.setLineWrap(true);
frmChatWindow.getContentPane().add(textArea);
JButton btnNewButton = new JButton("Send");
springLayout.putConstraint(SpringLayout.NORTH, textArea, 0, SpringLayout.NORTH, btnNewButton);
springLayout.putConstraint(SpringLayout.SOUTH, btnNewButton, -58, SpringLayout.SOUTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, btnNewButton, -10, SpringLayout.EAST, frmChatWindow.getContentPane());
frmChatWindow.getContentPane().add(btnNewButton);
JButton btnLogout = new JButton("Logout");
springLayout.putConstraint(SpringLayout.NORTH, btnLogout, 10, SpringLayout.NORTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, btnLogout, -10, SpringLayout.EAST, frmChatWindow.getContentPane());
frmChatWindow.getContentPane().add(btnLogout);
textArea_1 = new JTextArea();
textArea_1.setEditable(false);
textArea_1.append(null);
springLayout.putConstraint(SpringLayout.NORTH, textArea_1, 24, SpringLayout.NORTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.WEST, textArea_1, 10, SpringLayout.WEST, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.SOUTH, textArea_1, -19, SpringLayout.NORTH, textArea);
springLayout.putConstraint(SpringLayout.EAST, textArea_1, -6, SpringLayout.WEST, btnLogout);
frmChatWindow.getContentPane().add(textArea_1);
btnLogout.addActionListener(new Test2());
btnNewButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
String s = new String();
s = textArea.getText();
sendmsg(s);
getwrite();
}
});
frmChatWindow.setVisible(true);
}
private void getwrite()
{
write.write(username.getText());
}
public void sendmsg(String g)
{
textArea_1.append(username.getText() + " " + ": " + g + "\n");
}
class Test2 implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
frmChatWindow.dispose();
j.setVisible(true);
}
}
public static void main(String[] args)
{
// TODO Auto-generated method stub
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
try
{
new Client();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}
while((msg = reader.readLine()) != null)
{
write.write(msg);
}
s = new Socket("localhost", 6633);
reader = new BufferedReader(new InputStreamReader(s.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
问题是，您正在读取客户机的输入并写入客户机的输出。基本上，您只需要发送一个Ping服务器就可以发送任何客户端发送回的内容 ServerHandler.java
package chatserver;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JFrame;
public class Server {
Socket soc;
ServerSocket s = null;
public Server() throws IOException
{
try
{
s = new ServerSocket(6633);
while(true)
{
soc =s.accept();
ServerHandle handle = new ServerHandle(soc);
Thread t1 = new Thread(handle);
t1.start();
}
}
catch(Exception e)
{
System.out.println(e);
//should be e.printStackTrace();
}
finally
{
if(s != null)
{
s.close();
}
}
}
public static void main(String[] args)
{
// TODO Auto-generated method stub
try {
new Server();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
package chatserver;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
public class ServerHandle implements Runnable {
Socket s1;
BufferedReader reader;
PrintWriter write;
String msg;
public ServerHandle(Socket s1)
{
this.s1 = s1;
}
public void run()
{
try {
reader = new BufferedReader(new InputStreamReader(s1.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s1.getOutputStream()));
while((msg = reader.readLine()) != null)
{
write.write(msg);
}
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally
{
try {
s1.close();
reader.close();
write.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
package chatserver;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import javax.swing.*;
public class Client implements ActionListener
{
JTextArea textArea;
private JFrame frmChatWindow;
private JTextArea textArea_1;
JTextField username;
JButton submit;
JFrame j;
JFrame jf;
BufferedReader reader;
PrintWriter write;
String msg;
Socket s;
public Client() throws Exception, IOException
{
try
{
s = new Socket("localhost", 6633);
reader = new BufferedReader(new InputStreamReader(s.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
j = new JFrame("PLAIN");
j.setBounds(500, 150, 300, 400);
JPanel panel = new JPanel();
j.add(panel);
GridBagLayout gb = new GridBagLayout();
panel.setLayout(gb);
GridBagConstraints c = new GridBagConstraints();
JLabel label = new JLabel("User Name");
c.gridx = 0;
c.gridy = 0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.NORTHWEST;
c.ipadx = 5;
c.ipady = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(label, c);
username = new JTextField(10);
c.gridx = 1;
c.gridy = 0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.ipadx = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(username, c);
JLabel password = new JLabel("Password");
c.gridx = 0;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.ipadx = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(password, c);
JPasswordField pass = new JPasswordField(10);
c.gridx = 1;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.insets = new Insets(7, 7, 7, 7);
panel.add(pass, c);
submit = new JButton("Submit");
c.gridx = 1;
c.gridy = 6;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.insets = new Insets(7, 7, 7, 7);
panel.add(submit, c);
submit.addActionListener(this);
j.setVisible(true);
j.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
while ((msg = reader.readLine()) != null)
{
display(msg);
}
}
catch (Exception e)
{
System.out.println(e);
}
finally
{
s.close();
reader.close();
write.close();
}
}
private void display(String msg2)
{
textArea_1.append("Server" + ": " + msg2);
}
public void actionPerformed(ActionEvent e)
{
// TODO Auto-generated method stub
j.dispose();
frmChatWindow = new JFrame();
frmChatWindow.setResizable(false);
frmChatWindow.setTitle("Chat Window");
frmChatWindow.setBounds(100, 100, 316, 300);
frmChatWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SpringLayout springLayout = new SpringLayout();
frmChatWindow.getContentPane().setLayout(springLayout);
textArea = new JTextArea();
springLayout.putConstraint(SpringLayout.WEST, textArea, 10, SpringLayout.WEST, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.SOUTH, textArea, 31, SpringLayout.SOUTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, textArea, 229, SpringLayout.WEST, frmChatWindow.getContentPane());
textArea.setLineWrap(true);
frmChatWindow.getContentPane().add(textArea);
JButton btnNewButton = new JButton("Send");
springLayout.putConstraint(SpringLayout.NORTH, textArea, 0, SpringLayout.NORTH, btnNewButton);
springLayout.putConstraint(SpringLayout.SOUTH, btnNewButton, -58, SpringLayout.SOUTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, btnNewButton, -10, SpringLayout.EAST, frmChatWindow.getContentPane());
frmChatWindow.getContentPane().add(btnNewButton);
JButton btnLogout = new JButton("Logout");
springLayout.putConstraint(SpringLayout.NORTH, btnLogout, 10, SpringLayout.NORTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, btnLogout, -10, SpringLayout.EAST, frmChatWindow.getContentPane());
frmChatWindow.getContentPane().add(btnLogout);
textArea_1 = new JTextArea();
textArea_1.setEditable(false);
textArea_1.append(null);
springLayout.putConstraint(SpringLayout.NORTH, textArea_1, 24, SpringLayout.NORTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.WEST, textArea_1, 10, SpringLayout.WEST, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.SOUTH, textArea_1, -19, SpringLayout.NORTH, textArea);
springLayout.putConstraint(SpringLayout.EAST, textArea_1, -6, SpringLayout.WEST, btnLogout);
frmChatWindow.getContentPane().add(textArea_1);
btnLogout.addActionListener(new Test2());
btnNewButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
String s = new String();
s = textArea.getText();
sendmsg(s);
getwrite();
}
});
frmChatWindow.setVisible(true);
}
private void getwrite()
{
write.write(username.getText());
}
public void sendmsg(String g)
{
textArea_1.append(username.getText() + " " + ": " + g + "\n");
}
class Test2 implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
frmChatWindow.dispose();
j.setVisible(true);
}
}
public static void main(String[] args)
{
// TODO Auto-generated method stub
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
try
{
new Client();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}
while((msg = reader.readLine()) != null)
{
write.write(msg);
}
s = new Socket("localhost", 6633);
reader = new BufferedReader(new InputStreamReader(s.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
package chatserver;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JFrame;
public class Server {
Socket soc;
ServerSocket s = null;
public Server() throws IOException
{
try
{
s = new ServerSocket(6633);
while(true)
{
soc =s.accept();
ServerHandle handle = new ServerHandle(soc);
Thread t1 = new Thread(handle);
t1.start();
}
}
catch(Exception e)
{
System.out.println(e);
//should be e.printStackTrace();
}
finally
{
if(s != null)
{
s.close();
}
}
}
public static void main(String[] args)
{
// TODO Auto-generated method stub
try {
new Server();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
package chatserver;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
public class ServerHandle implements Runnable {
Socket s1;
BufferedReader reader;
PrintWriter write;
String msg;
public ServerHandle(Socket s1)
{
this.s1 = s1;
}
public void run()
{
try {
reader = new BufferedReader(new InputStreamReader(s1.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s1.getOutputStream()));
while((msg = reader.readLine()) != null)
{
write.write(msg);
}
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally
{
try {
s1.close();
reader.close();
write.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
package chatserver;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import javax.swing.*;
public class Client implements ActionListener
{
JTextArea textArea;
private JFrame frmChatWindow;
private JTextArea textArea_1;
JTextField username;
JButton submit;
JFrame j;
JFrame jf;
BufferedReader reader;
PrintWriter write;
String msg;
Socket s;
public Client() throws Exception, IOException
{
try
{
s = new Socket("localhost", 6633);
reader = new BufferedReader(new InputStreamReader(s.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
j = new JFrame("PLAIN");
j.setBounds(500, 150, 300, 400);
JPanel panel = new JPanel();
j.add(panel);
GridBagLayout gb = new GridBagLayout();
panel.setLayout(gb);
GridBagConstraints c = new GridBagConstraints();
JLabel label = new JLabel("User Name");
c.gridx = 0;
c.gridy = 0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.NORTHWEST;
c.ipadx = 5;
c.ipady = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(label, c);
username = new JTextField(10);
c.gridx = 1;
c.gridy = 0;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.ipadx = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(username, c);
JLabel password = new JLabel("Password");
c.gridx = 0;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.ipadx = 5;
c.insets = new Insets(7, 7, 7, 7);
panel.add(password, c);
JPasswordField pass = new JPasswordField(10);
c.gridx = 1;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.insets = new Insets(7, 7, 7, 7);
panel.add(pass, c);
submit = new JButton("Submit");
c.gridx = 1;
c.gridy = 6;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.WEST;
c.insets = new Insets(7, 7, 7, 7);
panel.add(submit, c);
submit.addActionListener(this);
j.setVisible(true);
j.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
while ((msg = reader.readLine()) != null)
{
display(msg);
}
}
catch (Exception e)
{
System.out.println(e);
}
finally
{
s.close();
reader.close();
write.close();
}
}
private void display(String msg2)
{
textArea_1.append("Server" + ": " + msg2);
}
public void actionPerformed(ActionEvent e)
{
// TODO Auto-generated method stub
j.dispose();
frmChatWindow = new JFrame();
frmChatWindow.setResizable(false);
frmChatWindow.setTitle("Chat Window");
frmChatWindow.setBounds(100, 100, 316, 300);
frmChatWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SpringLayout springLayout = new SpringLayout();
frmChatWindow.getContentPane().setLayout(springLayout);
textArea = new JTextArea();
springLayout.putConstraint(SpringLayout.WEST, textArea, 10, SpringLayout.WEST, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.SOUTH, textArea, 31, SpringLayout.SOUTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, textArea, 229, SpringLayout.WEST, frmChatWindow.getContentPane());
textArea.setLineWrap(true);
frmChatWindow.getContentPane().add(textArea);
JButton btnNewButton = new JButton("Send");
springLayout.putConstraint(SpringLayout.NORTH, textArea, 0, SpringLayout.NORTH, btnNewButton);
springLayout.putConstraint(SpringLayout.SOUTH, btnNewButton, -58, SpringLayout.SOUTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, btnNewButton, -10, SpringLayout.EAST, frmChatWindow.getContentPane());
frmChatWindow.getContentPane().add(btnNewButton);
JButton btnLogout = new JButton("Logout");
springLayout.putConstraint(SpringLayout.NORTH, btnLogout, 10, SpringLayout.NORTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, btnLogout, -10, SpringLayout.EAST, frmChatWindow.getContentPane());
frmChatWindow.getContentPane().add(btnLogout);
textArea_1 = new JTextArea();
textArea_1.setEditable(false);
textArea_1.append(null);
springLayout.putConstraint(SpringLayout.NORTH, textArea_1, 24, SpringLayout.NORTH, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.WEST, textArea_1, 10, SpringLayout.WEST, frmChatWindow.getContentPane());
springLayout.putConstraint(SpringLayout.SOUTH, textArea_1, -19, SpringLayout.NORTH, textArea);
springLayout.putConstraint(SpringLayout.EAST, textArea_1, -6, SpringLayout.WEST, btnLogout);
frmChatWindow.getContentPane().add(textArea_1);
btnLogout.addActionListener(new Test2());
btnNewButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
String s = new String();
s = textArea.getText();
sendmsg(s);
getwrite();
}
});
frmChatWindow.setVisible(true);
}
private void getwrite()
{
write.write(username.getText());
}
public void sendmsg(String g)
{
textArea_1.append(username.getText() + " " + ": " + g + "\n");
}
class Test2 implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
frmChatWindow.dispose();
j.setVisible(true);
}
}
public static void main(String[] args)
{
// TODO Auto-generated method stub
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
try
{
new Client();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}
while((msg = reader.readLine()) != null)
{
write.write(msg);
}
s = new Socket("localhost", 6633);
reader = new BufferedReader(new InputStreamReader(s.getInputStream()));
write = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
while ((msg = reader.readLine()) != null)
{
display(msg);
}
对于面向连接（TCP）的多客户端聊天服务器，您的设计是错误的。你需要坐下来，从一开始就画一张如何写作的图表 '请忽略UI设计。'请删除与问题无关的所有内容。请看，我已经删除了服务器中的UI，但clientNo中需要UI，它不是。套接字编程与UI无关。请阅读我的整个问题。它不单独处理套接字。您是否需要使用
Socket