java8,去重复

	ArrayList<SupplierDeliveryCountNum> collect = numlist.stream()
							.collect(Collectors.collectingAndThen(
									Collectors.toCollection(() -> new TreeSet<>(
											Comparator.comparing(o -> o.getDeliveryId() + ";" + o.getNum()))),
									ArrayList::new));

List<SupplierDeliveryCountNum> distinctIdList = numlist.stream().distinct()
							.collect(Collectors.toList());