TCP

package com.itheima.threadpool;

import java.io.*;
import java.net.Socket;

public class ClientDemo {
    public static void main(String[] args) throws IOException {
        Socket socket = new Socket("127.0.0.1",10000);

        //是本地的流,用来读取本地文件的.
        BufferedInputStream bis = new BufferedInputStream(new FileInputStream("optimizeserver\\ClientDir\\1.jpg"));

        //写到服务器 --- 网络中的流
        OutputStream os = socket.getOutputStream();
        BufferedOutputStream bos = new BufferedOutputStream(os);

        int b;
        while((b = bis.read())!=-1){
            bos.write(b);//通过网络写到服务器中
        }
        bos.flush();
        //给服务器一个结束标记,告诉服务器文件已经传输完毕
        socket.shutdownOutput();



        BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        String line;
        while((line = br.readLine()) !=null){
            System.out.println(line);
        }


        bis.close();
        socket.close();


    }
}


package com.itheima.threadpool;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

public class ServerDemo {
    public static void main(String[] args) throws IOException {
        ServerSocket ss = new ServerSocket(10000);
        ThreadPoolExecutor pool = new ThreadPoolExecutor(
                3,//核心线程数量
                10,   //线程池的总数量
                60,   //临时线程空闲时间
                TimeUnit.SECONDS, //临时线程空闲时间的单位
                new ArrayBlockingQueue<>(5),//阻塞队列
                Executors.defaultThreadFactory(),//创建线程的方式
                new ThreadPoolExecutor.AbortPolicy()//任务拒绝策略
        );

        while (true) {
            Socket accept = ss.accept();
            ThreadSocket ts = new ThreadSocket(accept);
            //new Thread(ts).start();
            pool.submit(ts);

        }
        //ss.close();


    }
}



package com.itheima.threadpool;

import java.io.*;
import java.net.Socket;
import java.util.UUID;

public class ThreadSocket implements Runnable {
    private Socket acceptSocket;

    public ThreadSocket(Socket accept) {
        this.acceptSocket = accept;
    }

    @Override
    public void run() {
        BufferedOutputStream bos = null;
        try {
            //网络中的流,从客户端读取数据的
            BufferedInputStream bis = new BufferedInputStream(acceptSocket.getInputStream());
            //本地的IO流,把数据写到本地中,实现永久化存储
            bos = new BufferedOutputStream(new FileOutputStream("optimizeserver\\ServerDir\\" + UUID.randomUUID().toString() + ".jpg"));

            int b;
            while((b = bis.read()) !=-1){
                bos.write(b);
            }

            BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(acceptSocket.getOutputStream()));
            bw.write("上传成功");
            bw.newLine();
            bw.flush();


        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if(bos != null){
                try {
                    bos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

            if (acceptSocket != null){
                try {
                    acceptSocket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

        }
    }
}