TCP协议实现登录（客户端）

public class TcpClientLogin {
    // 这是用户登录客户端
    static Socket socket = null;
    static OutputStream outputStream = null;
    static InputStream inputStream = null;
    static Scanner scanner = null;

    public static void main(String[] args) {
        try {
            while (true) {
                // 获取socket对象 传递IP地址和端口号
                socket = new Socket("127.0.0.1", 8080);

                scanner = new Scanner(System.in);
                // 获取字节输出流给服务端发送数据
                outputStream = socket.getOutputStream();
                // 获取字节输入流响应数据给客户端
                inputStream = socket.getInputStream();
                System.out.println("请输入用户名称。。。");
                String user = scanner.next();
                System.out.println("请输入用户密码。。。");
                String pwd = scanner.next();
                // userName=mayikt&userPwd=123456
                String text = "user=" + user + "&" + "pwd=" + pwd;
                // 写入数据
                outputStream.write(text.getBytes());
                // 响应数据
                byte[] bytes = new byte[1024];
                // 获取读取到的长度
                int length = inputStream.read(bytes);
                // 转换字符串 是Java lan包下的
                String result = new String(bytes, 0, length);
                if ("成功".equals(result)) {
                    System.out.println("登录成功。。。");
                } else {
                    System.out.println("登录失败。。。");
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                // 关闭资源
                socket.close();
                outputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }
}