package lesson02;

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

/**
 * 服務(wù)端接收文件
 */
public class TcpServerDemo2 {

  public static void main(String[] args) throws IOException {
    //1、創(chuàng)建服務(wù)
    ServerSocket serverSocket = new ServerSocket(9000);
    //2、監(jiān)聽客戶端的連接
    Socket socket = serverSocket.accept();//阻塞式監(jiān)聽，會一直等待客戶端連接
    //3、獲取輸入流
    InputStream is = socket.getInputStream();

    //4、文件輸出
    FileOutputStream fos = new FileOutputStream(new File("receive.jpg"));
    byte[] buffer = new byte[1024];
    int len;
    while ((len = is.read(buffer)) != -1){
      fos.write(buffer, 0, len);
    }

    //通知客戶端我接收完畢了
    OutputStream os = socket.getOutputStream();
    os.write("我接收完畢了，你可以斷開了".getBytes());

    //5、關(guān)閉資源
    fos.close();
    is.close();
    socket.close();
    serverSocket.close();

  }

}

package lesson02;

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

/**
 * 客戶端上傳文件
 */
public class TcpClientDemo2 {

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

    //1、創(chuàng)建一個Socket連接
    Socket socket = new Socket(InetAddress.getByName("127.0.0.1"), 90000);
    //2、創(chuàng)建一個輸出流
    OutputStream os = socket.getOutputStream();

    //3、讀取文件
    FileInputStream fis = new FileInputStream(new File("toux.jpg"));
    //4、寫出文件
    byte[] buffer = new byte[1024];
    int len;
    while ((len = fis.read(buffer)) != -1){
      os.write(buffer, 0, len);
    }

    //通知服務(wù)器，我已經(jīng)結(jié)束了
    socket.shutdownOutput(); //我已經(jīng)傳輸完了

    //確定服務(wù)器接收完畢，才能夠斷開連接
    InputStream inputStream = socket.getInputStream();
    //Sting byte[]
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    byte[] buffer2 = new byte[1024];
    int len2;
    while ((len2 = inputStream.read(buffer2)) != -1){
      baos.write(buffer2, 0, len2);
    }

    System.out.println(baos.toString());

    //5、關(guān)閉資源
    fis.close();
    os.close();
    socket.close();

  }

}