PageRequest 정렬 조건 여러개 넣기

참조 : https://stackoverflow.com/questions/10527124/how-to-query-data-via-spring-data-jpa-by-sort-and-pageable-both-out-of-box

final PageRequest page1 = new PageRequest(
  0, 20, Direction.ASC, "lastName", "salary"
);

final PageRequest page2 = new PageRequest(
  0, 20, new Sort(
    new Order(Direction.ASC, "lastName"), 
    new Order(Direction.DESC, "salary")
  )
);

dao.findAll(page1);