java stream 多字段排序

我觉得最实用的当属这种原形：

var comparator= Comparator.comparing((SocietyMember x)->x.getSocietyId())
                .thenComparing(x-> studentMap.get(x.getStudentUuid()).getMatchedOrgUuid())
                .thenComparing(x->studentMap.get(x.getStudentUuid()).getMatchedGradeUuid())
                .thenComparing(x->studentMap.get(x.getStudentUuid()).getMatchedClassUuid());

members.sort(comparator);

懂的自然懂，代码没经过精简，是项目中实际代码