@GetMapping("/{userId}")
	@PreAuthorize("hasAnyRole('A')")
	public User getOne(@PathVariable("userId") String userId) {
		return userService.getOne(userId);
	}
Get the user by the given user id.

@param userId user id
@return json message
ngrinder-controller/src/main/java/org/ngrinder/user/controller/UserApiController.java