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手表网站欧米茄官方,棋牌软件开发多少钱,湖南郴州新网,网页设计参考书籍JavaTCP协议实现一对一聊天与UDP协议实现群聊案例 1.TCP协议实现一对一聊天 1.1服务端运行结果 1.2客服端运行结果 1.3代码汇总 服务端 package twentyone;import java.io.IOException; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.…JavaTCP协议实现一对一聊天与UDP协议实现群聊案例 1.TCP协议实现一对一聊天 1.1服务端运行结果 1.2客服端运行结果 1.3代码汇总 服务端 package twentyone;import java.io.IOException; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.ServerSocket; import java.net.Socket;public class Server {public static void main(String[] args) {try {ServerSocket serverSocket new ServerSocket(12345); // 使用端口12345System.out.println(等待客户端连接…);Socket clientSocket serverSocket.accept(); // 等待客户端连接System.out.println(客户端已连接);// 获取输入输出流BufferedReader in new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));PrintWriter out new PrintWriter(clientSocket.getOutputStream(), true);// 读取客户端消息并回复String clientMessage;while ((clientMessage in.readLine()) ! null) {System.out.println(张超客户端: clientMessage);// 从控制台读取服务器消息并发送给客户端BufferedReader consoleReader new BufferedReader(new InputStreamReader(System.in));System.out.print( 蒂蒂服务器: );String serverMessage consoleReader.readLine();out.println(serverMessage);}} catch (IOException e) {e.printStackTrace();}} } 客户端 package twentyone;import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.Socket;public class Client {public static void main(String[] args) {try {Socket socket new Socket(localhost, 12345); // 连接服务器// 获取输入输出流BufferedReader in new BufferedReader(new InputStreamReader(socket.getInputStream()));PrintWriter out new PrintWriter(socket.getOutputStream(), true);// 从控制台读取客户端消息并发送给服务器BufferedReader consoleReader new BufferedReader(new InputStreamReader(System.in));String clientMessage;while (true) {System.out.print(张超客户端: );clientMessage consoleReader.readLine();out.println(clientMessage);// 读取服务器消息并打印String serverMessage in.readLine();System.out.println(蒂蒂服务器 serverMessage);}} catch (IOException e) {e.printStackTrace();}} } 2.UDP协议实现群聊 2.1服务端运行结果 2.2客户端运行结果 2.3代码汇总 第一服务端 package twentyone;import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress;public class UDPServer {public static void main(String[] args) {try {DatagramSocket serverSocket new DatagramSocket(12345);System.out.println(第一个服务器已启动等待客户端加入…);while (true) {byte[] receiveData new byte[1024];// 接收客户端消息DatagramPacket receivePacket new DatagramPacket(receiveData, receiveData.length);serverSocket.receive(receivePacket);String clientMessage new String(receivePacket.getData(), 0, receivePacket.getLength());System.out.println(第一个服务器收到来自 receivePacket.getAddress() : receivePacket.getPort() 的消息: clientMessage);// 广播消息给其他客户端broadcastMessage(serverSocket, clientMessage, receivePacket.getAddress(), receivePacket.getPort());}} catch (Exception e) {e.printStackTrace();}}private static void broadcastMessage(DatagramSocket serverSocket, String message, InetAddress excludeAddress, int excludePort) {try {byte[] sendData message.getBytes();// 获取广播地址InetAddress broadcastAddress InetAddress.getByName(255.255.255.255);int broadcastPort 12345;// 广播消息给所有客户端除了发起广播的客户端DatagramPacket sendPacket new DatagramPacket(sendData, sendData.length, broadcastAddress, broadcastPort);serverSocket.send(sendPacket);} catch (Exception e) {e.printStackTrace();}} } 第二服务端 package twentyone;import java.net.DatagramPacket; import java.net.DatagramSocket;public class SecondUDPServer {public static void main(String[] args) {try {DatagramSocket serverSocket new DatagramSocket(12346);System.out.println(第二个服务器已启动等待客户端加入…);while (true) {byte[] receiveData new byte[1024];// 接收客户端消息DatagramPacket receivePacket new DatagramPacket(receiveData, receiveData.length);serverSocket.receive(receivePacket);String clientMessage new String(receivePacket.getData(), 0, receivePacket.getLength());System.out.println(第二个服务器收到来自 receivePacket.getAddress() : receivePacket.getPort() 的消息: clientMessage);}} catch (Exception e) {e.printStackTrace();}} } 客户端 package twentyone;import java.net.DatagramPacket; import java.net.DatagramSocket; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.InetAddress;class ConsoleHelper {private static final BufferedReader reader new BufferedReader(new InputStreamReader(System.in));public static String readLine(String prompt) {try {System.out.print(prompt);return reader.readLine();} catch (IOException e) {throw new RuntimeException(Error reading from console, e);}} }public class UDPClient {public static void main(String[] args) {try {DatagramSocket clientSocket new DatagramSocket(); // 随机分配端口// 启动接收线程new Thread(() - receiveMessages(clientSocket, 3)).start();while (true) {// 从控制台读取消息并发送给服务端1和服务端2String message ConsoleHelper.readLine(客户端: );byte[] sendData message.getBytes();// 发送消息给服务端1DatagramPacket sendPacket1 new DatagramPacket(sendData, sendData.length, InetAddress.getByName(localhost), 12345);clientSocket.send(sendPacket1);// 发送消息给服务端2DatagramPacket sendPacket2 new DatagramPacket(sendData, sendData.length, InetAddress.getByName(localhost), 12346);clientSocket.send(sendPacket2);}} catch (Exception e) {e.printStackTrace();}}private static void receiveMessages(DatagramSocket clientSocket, int maxReceiveCount) {try {byte[] receiveData new byte[1024];int receiveCount 0;while (receiveCount maxReceiveCount) {// 接收服务器广播消息DatagramPacket receivePacket new DatagramPacket(receiveData, receiveData.length);clientSocket.receive(receivePacket);String serverMessage new String(receivePacket.getData(), 0, receivePacket.getLength());System.out.println(服务器: serverMessage);receiveCount;}} catch (Exception e) {e.printStackTrace();}} }