您必须
User-Agent从请求中读取标头，然后决定。
在普通的servlet应用程序中，一种粗略的实现方式是：
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { if(request.getHeader("User-Agent").contains("Mobi")) { //you're in mobile land } else { //nope, this is probably a desktop }}
