Java实现服务器与客户端网络通信

只能实现客户端和服务器之间的网络通信，多客户端的暂时还不会，等待更新吧

1.Server.java

package hahaha;import java.awt.FlowLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JScrollPane;import javax.swing.JTextArea;import javax.swing.JTextField;public class Server {public static void main(String[] args) {// TODO Auto-generated method stubWindowServer win = new WindowServer();win.setTitle("服务器");}}class WindowServer extends JFrame implements ActionListener {JButton start, send;JTextField port;JTextField inputText;JTextArea showResult;Socket socket = null;PrintWriter out = null;BufferedReader in = null;ServerThread thread;WindowServer() {setLayout(new FlowLayout());add(new JLabel("Port:"));port = new JTextField("8888", 25);add(port);start = new JButton("start");add(start);showResult = new JTextArea(15, 35);JScrollPane scroll = new JScrollPane(showResult);add(scroll);add(new JLabel("Say:"));inputText = new JTextField(26);add(inputText);send = new JButton("发送");send.setEnabled(false);add(send);start.addActionListener(this);send.addActionListener(this);showResult.append("Server starting……\n");setBounds(400, 100, 400, 400);setVisible(true);setResizable(false);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}public void actionPerformed(ActionEvent e) {if (e.getSource() == start) {try {ServerSocket s = new ServerSocket(Integer.parseInt(port.getText()));socket = s.accept();showResult.append("Client connected……\n\n");// PrintWriterout = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())));// BufferedReaderin = new BufferedReader(new InputStreamReader(socket.getInputStream()));thread = new ServerThread();thread.start();send.setEnabled(true);} catch (IOException e1) {}}if (e.getSource() == send) {if (socket.isConnected()) {String s = inputText.getText();if (!s.isEmpty()) {out.println("服务器:" + s);showResult.append("服务器:" + s + "\n");inputText.setText(null);out.flush();}}}}class ServerThread extends Thread {String s = null;public void run() {while (true) {if (socket.isConnected()) {try {s = in.readLine();showResult.append(s + "\n");} catch (IOException e) {showResult.append("与服务器已断开\n");break;}} else {showResult.append("与服务器已断开\n");}}}}}

2.Client.java

package hahaha;import java.awt.FlowLayout;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.PrintWriter;import java.net.InetAddress;import java.net.InetSocketAddress;import java.net.Socket;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JScrollPane;import javax.swing.JTextArea;import javax.swing.JTextField;public class Client {public static void main(String[] args) {// TODO Auto-generated method stubWindowClient win = new WindowClient();win.setTitle("客户端");}}class WindowClient extends JFrame implements Runnable, ActionListener {JTextField ip, port;JButton connection, send;JTextField inputText;JTextArea showResult;Socket socket = null;PrintWriter out = null;BufferedReader in = null;Thread thread;WindowClient() {socket = new Socket();setLayout(new FlowLayout());add(new JLabel("Serve IP:"));ip = new JTextField("127.0.0.1", 8);add(ip);add(new JLabel("Serve Port:"));port = new JTextField("8888", 8);add(port);connection = new JButton("Connect");add(connection);showResult = new JTextArea(15, 35);add(showResult);JScrollPane scroll = new JScrollPane(showResult);add(scroll);add(new JLabel("Say:"));inputText = new JTextField(25);add(inputText);send = new JButton("发送");send.setEnabled(false);add(send);connection.addActionListener(this);send.addActionListener(this);thread = new Thread(this);setBounds(800, 100, 410, 400);setVisible(true);setResizable(false);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}public void actionPerformed(ActionEvent e) {if (e.getSource() == connection) {try {// 请求和服务器建立连接if (socket.isConnected()) {} else {InetAddress address = InetAddress.getByName("127.0.0.1");InetSocketAddress socketAddress = new InetSocketAddress(address, Integer.parseInt(port.getText()));socket.connect(socketAddress);showResult.append("Connect to server……\n\n");in = new BufferedReader(new InputStreamReader(socket.getInputStream()));out = new PrintWriter(socket.getOutputStream());send.setEnabled(true);if (!(thread.isAlive())) {thread = new Thread(this);}thread.start();}} catch (IOException e1) {System.out.println(e1);socket = new Socket();}}if (e.getSource() == send) {if (socket.isConnected()) {String s = inputText.getText();if (!s.isEmpty()) {out.println("客户端:" + s);showResult.append("客户端:" + s + "\n");inputText.setText(null);out.flush();}}}}public void run() {String s = null;while (true) {try {s = in.readLine();showResult.append(s + "\n");} catch (Exception e) {showResult.append("服务器已断开\n");break;}}}}

3.界面展示