use URL to enter the room but didn't show the whole page

[????]

Hello,
use WebService.getRoomHash method get hash String, use 
URL(http://localhost:5080/openmeetings/hash?secure=4d398a70-d041-4f26-8fa1-fe2ae410aca1)
 enter room ,
  but The page doesn't show.
but Official site description .
How to through the url into the specified meeting room??
Looking forward to your reply
                      With best wishes.