网络编程_TCP协议上传图片并给出反馈

package cn.itcast_13;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;

/*
 * TCP协议上传图片并给出反馈
 */
public class UploadServer {
  public static void main(String[] args) throws IOException {
    // 创建服务器Socket对象
    ServerSocket ss = new ServerSocket(45678);

    // 监听客户端链接
    Socket s = ss.accept();

    // 封装通道内流
    BufferedInputStream bis = new BufferedInputStream(s.getInputStream());
    // 封装图片文件
    BufferedOutputStream bos = new BufferedOutputStream(
        new FileOutputStream("a.jpg"));
    byte[] bys = new byte[1024];
    int len = 0;
    while ((len = bis.read(bys)) != -1) {
      bos.write(bys, 0, len);
      bos.flush();
    }

    // 给出反馈
    OutputStream os = s.getOutputStream();
    os.write("图片上传成功".getBytes());

    // 释放资源
    bos.close();
    s.close();
  }
}

package cn.itcast_13;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;

/*
 * TCP协议上传图片并给出反馈
 */
public class UploadClient {
  public static void main(String[] args) throws IOException {
    // 创建客户端Socket对象
    Socket s = new Socket("192.168.31.165", 45678);

    // 封装图片文件
    BufferedInputStream bis = new BufferedInputStream(new FileInputStream(
        "林青霞.jpg"));
    // 封装通道内数据
    BufferedOutputStream bos = new BufferedOutputStream(s.getOutputStream());

    byte[] bys = new byte[1024];
    int len = 0;
    while ((len = bis.read(bys)) != -1) {
      bos.write(bys, 0, len);
      bos.flush();
    }

    // 终止输出流,提示服务器
    s.shutdownOutput();

    // 接收反馈
    InputStream is = s.getInputStream();
    byte[] bys2 = new byte[1024];
    int len2 = is.read(bys2);
    String client = new String(bys2, 0, len2);
    System.out.println(client);

    // 释放资源
    bis.close();
    s.close();
  }
}