Java——Socket实现服务器与客户端交流

曾经终败给现在 2022-06-05 11:47 170阅读 0赞

//Server.java
    import java.io.*;
    import java.net.*;
    
    public class Server {
    
        public static void main(String[] args) throws IOException{
            // TODO Auto-generated method stub
            //创建一个服务器端socket，指定绑定的端口号，并监听此端口
            InputStream inp;
            InputStreamReader isr;
            BufferedReader bfr;
            Socket socket;
            ServerSocket serverSocket;
            String info;
    // System.out.println("服务器启动，正在等待客户端连接");
            while(true) {
                try {
                        //System.out.println("服务器启动，正在等待客户端连接");
                        serverSocket = new ServerSocket(6666);
                        while(true) {
                            socket = serverSocket.accept();
                            inp = socket.getInputStream();
                            isr = new InputStreamReader(inp);
                            bfr = new BufferedReader(isr);
    
                            info = null;
    
                            if((info = bfr.readLine())!=null && !info.equals(" ")) {
                                System.out.println("客服端说："+info);
                            }
                            if(info.equals(" ")) {
                                //socket.shutdownInput();
                                System.out.println("客服端表示输入完毕...");
                                break;
                            }
                        }
                    PrintWriter pw;
                    OutputStream ots;
                    String i;
                    Socket socket1;
                    while(true) {
                        socket1 = new Socket("localhost",7777);
                        System.out.println("请输入数据（输入空格+回车结束输入）：");
                        System.out.print(">");
                        ots = socket1.getOutputStream();
                        pw = new PrintWriter(ots);
                        pw.write("");
                        pw.write(i = new BufferedReader(new InputStreamReader(System.in)).readLine());
                        pw.flush();
                        socket1.shutdownOutput();
                        if(i.equals(" ")) {
                            System.out.println("输入已结束...等待客户端响应");
                            pw.close();
                            ots.close();
                            bfr.close();
                            isr.close();
                            inp.close();
                            socket1.close();
                            serverSocket.close();
                            break;
                        }
                    }
                }catch(SocketException e) {
    // e.printStackTrace();
                    System.out.println("已结束...");
                }
            }
        }
    }

//Client.java
    import java.io.*;
    import java.net.*;
    
    public class Client {
    
        public static void main(String[] args) {
            String i;
            // TODO Auto-generated method stub
            ServerSocket serverSocket;
            Socket socket,socket1;
            PrintWriter pw;
            BufferedOutputStream bos;
            OutputStream ots;
            InputStream is;
            InputStreamReader isr;
            BufferedReader br;
            while(true) {
                try {
                    while(true) {
                        socket = new Socket("localhost",6666);
                        ots = socket.getOutputStream();
                        bos = new BufferedOutputStream(ots);
                        pw = new PrintWriter(bos);
                        System.out.println("请输入数据（输入空格+回车结束输入）：");
                        System.out.print(">");
                        pw.write(i = new BufferedReader(new InputStreamReader(System.in)).readLine());
                        pw.flush();
                        socket.shutdownOutput();
                        if(i.equals(" ")) {
                            System.out.println("输入已结束...等待服务器回复");
                            //socket.shutdownOutput();
                            break;
                        }
                    }
                    serverSocket = new ServerSocket(7777);
                    while(true) {
                        socket1 = serverSocket.accept();
                        is = socket1.getInputStream();
                        isr = new InputStreamReader(is);
                        br = new BufferedReader(isr);
                        String info = null;
                        if((info = br.readLine())!=null && !info.equals(" ")) {
                            System.out.println("服务器说：" + info);
                        }
                        if(info.equals(" ")) {
                            System.out.println("服务器表示输入已结束...");
                            br.close();
                            isr.close();
                            is.close();
                            pw.close();
                            ots.close();
                            bos.close();
                            socket.close();
                            socket1.close();
                            serverSocket.close();
                        }
                    }
                }catch(SocketException e){
                    System.out.println("已结束...");
                    //e.printStackTrace();
                }catch(IOException e) {
                    //e.printStackTrace();
                }
            }
        }
    }

先启动服务器，再启动客户端，然后。。。就能交流了