List对象按属性排序

1.Stream流sorted

正序：

List<Person> collect = personList
.stream()
.sorted(Comparator.comparing(Person::getUploadTime))
.collect(Collectors.toList());

倒序：

List<Person> collect = personList
.stream()
.sorted((p1, p2) -> p2.getUploadTime().compareTo(p1.getUploadTime()))
.collect(Collectors.toList());

2.List sort，直接给List排序

personList.sort(Comparator.comparing(Person::getUploadTime));

倒序：

personList.sort((p1, p2) -> p2.getUploadTime().compareTo(p1.getUploadTime()));