Netty学习-java BIO编程

import io.netty.util.concurrent.DefaultThreadFactory;

import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.*;

public class BioServer {

    /**
     * 客户端消息处理
     * @param socket socket
     */
    public static void handler(Socket socket){

        try {

            System.out.println("线程id = " + Thread.currentThread().getId() +
                    " 名字 = " + Thread.currentThread().getName());

            byte[] bytes = new byte[1024];

            InputStream inputStream = socket.getInputStream();

            while (true) {
                System.out.println("线程id = " + Thread.currentThread().getId() +
                        " 名字 = " + Thread.currentThread().getName());

                System.out.println(">>> read ....");

                int read = inputStream.read(bytes);

                if (read != -1) {
                    System.out.println(new String(bytes, 0, read));
                }else {
                    break;
                }
            }

        }catch (Exception e){
            e.printStackTrace();
        }finally {
            System.out.println("关闭client的连接");

            try{
                socket.close();
            }catch (Exception e){
                e.printStackTrace();
            }
        }

    }

    public static void main(String[] args) throws IOException {


        // 创建线程池
        ExecutorService newCachedThreadPool = new ThreadPoolExecutor(0, Integer.MAX_VALUE,
                60L, TimeUnit.SECONDS,
                new SynchronousQueue<>(),
                new DefaultThreadFactory("newCachedThreadPool"));


        // 创建SeverSocket
        ServerSocket serverSocket = new ServerSocket(8888);

        System.out.println(">>> Server starting ...... ");

        while (true){
            System.out.println(
                    "线程id = " + Thread.currentThread().getId() +
                    " 名字 = " + Thread.currentThread().getName());

            System.out.println(">>> waiting to connect .....");

            /* 
             监听客户端连接, 没有连接时, 
             serverSocket.accept()方法会 -> 阻塞 <- 在此,
             直到有客户端连接 
            */ 
            final Socket socket = serverSocket.accept();

            System.out.println("连接到一个客户端");

            // 连接到一个客户端就从线程池里取线程执行
            newCachedThreadPool.execute(() -> handler(socket));


        }

    }
}