//排序

        Comparator<Map<String, Object>> comparator = Comparator.comparing(item -> item.get(sortField).toString());

        if (Constant.SORT_TYPE_ASC == sortType){

            //升序

            resourceList.sort(comparator);

        }else {

            resourceList.sort(comparator.reversed());

        }

resultList.sort(Comparator.comparing(MetaDataModel::getOrder));

dictVoList.sort(Comparator.comparingInt(DictVo::getOrder));

public static void test2(){
    Set<Student> students = new HashSet<>();
    Student student1 = new Student(1,"李四",1);
    Student student2 = new Student(2,"张三",3);
    Student student3 = new Student(3,"王麻",2);
    students.add(student1);
    students.add(student2);
    students.add(student3);
    List<Student> studentList1 = new ArrayList<>(students);
    studentList1.sort(Comparator.comparing(Student::getAge));
    System.out.println(studentList1);
}

public static void test3(){

        Set<String> sets = new HashSet<>();

        sets.add("aa");

        sets.add("ee");

        sets.add("cc");

        //倒序

        Set<String> treeSetDesc = new TreeSet<>((o1, o2) -> o2.compareTo(o1));

        treeSetDesc.addAll(sets);

        System.out.println(treeSetDesc);

        //升序

        Set<String> treeSetAsc = new TreeSet<>((o1, o2) -> o1.compareTo(o2));

        treeSetAsc.addAll(sets);

        System.out.println(treeSetAsc);

    }