集合
List dictEntityList = dictService.findByType(6);
取出属性为集合
List stateNameList = dictEntityList.stream().map(DictEntity::getName).collect(Collectors.toList());
取出属性为数组
Long[] ids = dictEntityList.stream().map(DictEntity::getId).toArray(Long[]::new);
集合去重
dictEntityList.stream().distinct().collect(Collectors.toList());