Java - socket双向通信例子

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服务端

import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.net.ServerSocket;import java.net.Socket;import java.util.Scanner;public class Server_1 {    public static void main(String[] args) {        InputStreamReader isr;        BufferedReader br;        OutputStreamWriter osw;        BufferedWriter bw;        String str;        Scanner in = new Scanner(System.in);        try {            ServerSocket server = new ServerSocket(4444);// 在本机的4444端口开放Server            Socket socket = server.accept();// 只要产生连接，socket便可以代表所连接的那个物体，同时这个server.accept()只有产生了连接才会进行下一步操作。            System.out.println(socket.getInetAddress());// 输出连接者的IP。            System.out.println("建立了一个连接！");            while (true) {                isr = new InputStreamReader(socket.getInputStream());                br = new BufferedReader(isr);                System.out.println(socket.getInetAddress() + ":" + br.readLine());                osw = new OutputStreamWriter(socket.getOutputStream());                bw = new BufferedWriter(osw);                System.out.print("回复:");                str = in.nextLine();                bw.write(str + "\n");                bw.flush();            }        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }}

客服端

import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.net.ServerSocket;import java.net.Socket;import java.util.Scanner;public class Client_1 {    public static void main(String[] args) {        InputStreamReader isr;        BufferedReader br;        OutputStreamWriter osw;        BufferedWriter bw;        String str;        Scanner in = new Scanner(System.in);        try {            Socket socket = new Socket("localhost", 4444);//          System.out.println(socket.getInetAddress());// 输出连接者的IP。            System.out.println("成功连接服务器");            while (true) {                osw = new OutputStreamWriter(socket.getOutputStream());                bw = new BufferedWriter(osw);                System.out.print("回复:");                str = in.nextLine();                bw.write(str + "\n");                bw.flush();                isr = new InputStreamReader(socket.getInputStream());                br = new BufferedReader(isr);                System.out.println(socket.getInetAddress() + ":" + br.readLine());            }        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }}

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