java socket 服务端 客户端

Server

package com.witwicky.socket.basicsocket;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class Server {
    public static void main(String[] args) {
        int port = 43523;
        ServerSocket serverSocket = null;
        try {
            System.out.println("===\nstart recive message......");

            serverSocket = new ServerSocket(port);
            Socket socket = serverSocket.accept();

            InputStream inputStream = socket.getInputStream();

            StringBuffer sb = new StringBuffer();
            byte[] bytes = new byte[1024];
            int len;
            while ((len = inputStream.read(bytes)) != -1) {
                System.out.println("length: " + len);
                sb.append(new String(bytes, 0, len, "UTF-8"));
            }
            System.out.println(sb.toString());
            System.out.println("end recive message......\n===");

            String returnContent = "recive over.";
            OutputStream outputStream = socket.getOutputStream();

            outputStream.write(returnContent.getBytes("UTF-8"));

            outputStream.close();
            inputStream.close();
            socket.close();
            serverSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Connected to the target VM, address: ‘127.0.0.1:61818‘, transport: ‘socket‘
===
start recive message......
length: 180
因为《The C Programme Language》中使用它做为第一个演示程序，非常著名，所以后来的程序员在学习编程或进行设备调试时延续了这一习惯。
end recive message......
===
Disconnected from the target VM, address: ‘127.0.0.1:61818‘, transport: ‘socket‘

Process finished with exit code 0

Client

package com.witwicky.socket.basicsocket;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;

public class Client {
    public static void main(String[] args) {
        String host = "127.0.0.1";
        int port = 43523;
        try {
            System.out.println("===");
            Socket socket = new Socket(host, port);
            OutputStream outputStream = socket.getOutputStream();

            String content = "因为《The C Programme Language》中使用它做为第一个演示程序，非常著名，所以后来的程序员在学习编程或进行设备调试时延续了这一习惯。";
            outputStream.write(content.getBytes());

            socket.shutdownOutput();

            int len;
            byte[] bytes = new byte[1024];
            InputStream inputStream = socket.getInputStream();
            StringBuffer sb = new StringBuffer();
            while ((len = inputStream.read(bytes)) != -1) {
                sb.append(new String(bytes, 0, len, "UTF-8"));
            }
            System.out.println("service return content: " + sb.toString());
            System.out.println("===");

            inputStream.close();
            outputStream.close();
            socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

Connected to the target VM, address: ‘127.0.0.1:61828‘, transport: ‘socket‘
===
service return content: recive over.
===
Disconnected from the target VM, address: ‘127.0.0.1:61828‘, transport: ‘socket‘

Process finished with exit code 0

原文地址：https://www.cnblogs.com/hfultrastrong/p/9266167.html