Java8 stream 更改List＜Map＜String,Object＞＞ 里面Map对象的键

1、更新多个键：

List> returnList = new ArrayList<>();
returnList.put("aa","1");
returnList.put("bb","2");
returnList.stream().map(x -> {
   //aa修改为a,bb修改为b x.put("a",x.remove("aa")); x.put("b",x.remove("bb")); return x; }).collect(Collectors.toList());

2、更新一个键：

returnList.forEach(s -> s.put("createTime",s.remove("createtime")));