lamda 表达式的一些写法
lambda表达式list转map
Map warningAppealMap = warningAppeals.stream().collect(Collectors.toMap(WarningAppeal::getRecId, r->r, (k1,k2)->k1)); lambda表达式list转map
Map warningAppealMap = warningAppeals.stream().collect(Collectors.toMap(WarningAppeal::getRecId, r->r, (k1,k2)->k1));