原文：
https://blog.csdn.net/qq_41574321/article/details/94634351
https://blog.csdn.net/weixin_30905981/article/details/99427319
Order order = orders.stream()
.filter(item -> Func.equals(item.getPlatformOrderSn(), platformOrderSn))
.findFirst()
.orElse(null);
源码一览
