java 判断用户是PC端和还是APP端登陆

public void getRequestHeader(HttpServletRequest request){

    // 从浏览器获取请求头信息

    String info= request.getHeader("user-agent");

    if(info.contains("Windows")){

        System.out.println("Windows pc端登陆");

        return;

    }

    if(info.contains("Macintosh")){

        System.out.println("Mac pc端登陆");

        return;

    }

    if(info.contains("Android")) {

        System.out.println("Android移动客户端");

        return;

    }

    if(info.contains("iPhone")) {

        System.out.println("iPhone移动客户端");

        return;

    }

    if(info.contains("iPad")) {

        System.out.println("iPad客户端");

        return;

    }

    System.out.println("其他客户端");

}