tcp图片上传

1.client

public static void main(String[] args) throws IOException {
        // 创建客户端Socket对象
        Socket s = new Socket("192.168.12.92", 19191);

        // 封装图片文件
        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(
                "林青霞.jpg"));
        // 封装通道内的流
        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();
        }
        
        s.shutdownOutput();

        // 读取反馈
        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();
    }

2.server

public static void main(String[] args) throws IOException {
        // 创建服务器Socket对象
        ServerSocket ss = new ServerSocket(19191);

        // 监听客户端连接
        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("mn.jpg"));

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

        // 给一个反馈
        OutputStream os = s.getOutputStream();
        os.write("图片上传成功".getBytes());

        bos.close();
        s.close();
    }

注意：IO流的操作流程不熟悉，查询api