A door-locking mechanism is for locking a door of a cabinet with respect to a main body of the cabinet. The door-locking mechanism includes a supporting component being operatively mountable onto the door, a driving component being operatively moveable with respect to the supporting component between at least first and second configurations, and at least one transmission component being operatively moveable with respect to the supporting component between drawn-in and drawn-out configurations. The door-locking mechanism also includes at least one locking rod being operatively connectable to the at least one transmission component and being movable between disengaged and engaged configurations with respect to a corresponding catch-rod of the cabinet, in response to the at least one transmission component being operated between the drawn-in and drawn-out configurations respectively, via an operation of the driving component from the first to the second configuration.