Police were called to the centre on Saturday (June 28) at 6.12pm following reports of the knife attack.
Medics treated the teenage boy at the scene before taking him to hospital. His injuries are not believed to be life-changing or life-threatening.
A boy, 16, has been arrested on suspicion of possessing a knife and grievous bodily harm and a 15-year-old boy has been arrested on suspicion of affray.
Both have been released under investigation.
Anyone with information is asked to call police on 101 quoting reference CAD 6181/28JUN25.
