比较List＜Map＜String,Object＞＞以及List＜实体类＞有相同属性的交集

List<String> aIds=list.stream().map(item-> item.get("id").toString()).collect(Collectors.toList());
List<UserQuestionAnswer> collect = listObjectSec.stream().filter(B -> aIds.contains(B.getQuestionId())).collect(Collectors.toList());
int size = collect.size();