JDK8 stream.collect 数据结构转换
List<DocumentAuthorization> authorization; final Map<Long, List<DocumentAuthorization>> authorizationTableMap = authorization.stream() .collect(Collectors.groupingBy(DocumentAuthorization::getTableId));
------------ 就像竹林的灯火,被风吹过,摇摇曳曳,但永不熄灭! ------------------------