java获取主机ip

  InetAddress addr = InetAddress.getLocalHost();
  // 获得本机IP
  System.out.println(addr.getHostAddress());
  // 获得本机名称
  System.out.println(addr.getHostName());
  System.out.println(addr.toString());

=================结果==================
192.168.0.21

franklia-PC
franklia-PC/192.168.0.21