mysocket | 易学教程

client

 package com.sun.mysocket;  import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.PrintWriter; import java.net.Socket; import java.util.Scanner;  /**  *   * @author JiangYuan Sun  * @date 2019-04-18 11:23   */ public class Client {     /**     *     * @author JiangYuan Sun     * @throws IOException      * @date   2019-04-18 11:23     */    public static void main(String[] args) throws IOException {       // TODO Auto-generated method stub       System.out.println("聊天通道已建立，请输入：");       Socket socket = new Socket("127.0.0.1",1000);       new Thread(new Send(socket)).start();;              BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));        try {                String msg;//服务器发过来的信息                while ((msg = bufferedReader.readLine()) != null) {                    System.out.println("##：" + msg);                }            } catch (IOException e) {                System.out.println("警告：断开连接！");                try {                    if (!socket.isClosed()) {                        socket.close();                    }                } catch (IOException e1) {                    System.out.println("读取线程：关闭socket出现错误");                }            }            System.exit(1);           }  } class  Send implements  Runnable {    Socket socket=null;    /**     *     * @author JiangYuan Sun     * @date   2019-04-18 15:06     */    public Send(Socket socket) {       this.socket = socket;    }        public void run() {              //获取一个输出流       OutputStream outputStream = null;       try {          outputStream = socket.getOutputStream();       } catch (IOException e) {          // TODO Auto-generated catch block          e.printStackTrace();       }       //把输出流 包装成输入流       PrintWriter printWriter = new PrintWriter(outputStream);              @SuppressWarnings("resource")       Scanner scanner = new Scanner(System.in);       String msg;       while ((msg = scanner.nextLine())!=null) {          if(socket.isClosed()) {             break;          } else {             if(msg.equals("88")) {                System.out.println("断开和服务器的连接！");                try {                   socket.close();                } catch (IOException e) {                   // TODO Auto-generated catch block                   e.printStackTrace();                }                break;             }          }          printWriter.println(msg);          printWriter.flush();       }    } }

server

 package com.sun.mysocket;  import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.ServerSocket; import java.net.Socket;  /**  *   * @author JiangYuan Sun  * @date 2019-04-18 14:09   */ public class Server {     /**     *     * @author JiangYuan Sun     * @throws IOException      * @date   2019-04-18 14:09     */    public static void main(String[] args) throws IOException {       // TODO Auto-generated method stub       ServerSocket serverSocket = new ServerSocket(1000);       System.out.println("聊天通道已建立");       Socket socket;         BufferedReader bufferedReader;       while (true) {             socket = serverSocket.accept();             System.out.println("一客户端连接。");             Thread writerThread = new Thread(new SeverSend(socket));             writerThread.start();              bufferedReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));             try {                 String msg;//客户端发过来的信息                 while ((msg = bufferedReader.readLine()) != null) {                     System.out.println("##客户端：" + msg);                 }             } catch (IOException e) {                 try {                     if (!socket.isClosed()) {                         socket.close();                     }                 } catch (IOException e1) {                     System.out.println("关闭socket出现错误");                 }             }             System.out.println("提示：当前客户端已经断开连接，服务器正等待下一个客户端的连接。");         }    }  }

 package com.sun.mysocket;  import java.io.IOException; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.Socket; import java.util.Scanner;  /**  *   * @author JiangYuan Sun  * @date 2019-04-18 15:27   */ public class SeverSend implements Runnable {     private Socket socket = null;        private PrintWriter printWriter;        private Scanner scanner;         public SeverSend(Socket socket) throws IOException {            this.socket = socket;            scanner = new Scanner(System.in);            printWriter = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()), true);        }         @Override        public void run() {            String msg;//要发送的信息            try {                while ((msg = scanner.nextLine()) != null) {                    if (msg.equals("88")) {                        if (!socket.isClosed()) {                            System.out.println("服务器手动与客户端断开");                            socket.close();                        }                        break;                    }                    printWriter.println(msg);                    //TODO: redis                 //TODO: 推送 //                 socket.getOutputStream().write();                }            } catch (IOException io) {                System.out.println("关闭socket出现问题");            } catch (Exception e) {                System.out.println("异常关闭客户端（可能是直接关闭退出窗口）");            }        } }

文章来源: https://blog.csdn.net/weixin_41825468/article/details/90770887

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socket

printwriter