TCP文件上传

TCP实现文件上传

TcpClientDemo01

public class TcpClientDemo01 {
    public static void main(String[] args) throws IOException {
        //1. 创建连接127.0.0.1:9999的Socket
        InetAddress serverIp = InetAddress.getByName("127.0.0.1");
        int port = 9999;
        Socket socket = new Socket(serverIp,port);

        //2. 创建对127.0.0.1:9999输出内容的输出流
        OutputStream os = socket.getOutputStream();

        //逐步把文件的信息放到socket的输出流
        FileInputStream fis = new FileInputStream(new File("dog.jpg"));
        byte[] buffer = new byte[1024];
        int len;
        while((len = fis.read(buffer))!=-1){

			//3. 创建输出流
            os.write(buffer,0,len);
        }

        //4. 关闭socket与IO流
        fis.close();
        os.close();
        socket.close();
    }
}

TcpServerDemo01

public class TcpServerDemo01 {
    public static void main(String[] args) throws IOException {
        //1. 创建服务器Socket用于监听客户端Socket
        ServerSocket serverSocket = new ServerSocket(9999);

        //2. 创建连接监听到客户端的Socket
        Socket socket = serverSocket.accept();

        //3. 创建连接被监听的Socket的输入流
        InputStream is = socket.getInputStream();
        FileOutputStream fos = new FileOutputStream(new File("receive"));
        byte[] buffer = new byte[1024];
        int len;
        while((len = is.read(buffer))!=-1){
            fos.write(buffer,0,len);
        }

        //4. 关闭socket与IO流
        fos.close();
        is.close();
        socket.close();
        serverSocket.close();
    }
}