原:
Map<String, Integer> gridPointRs = gridPointList.stream()
.collect(Collectors.toMap(GridPoint::getGridPointName, GridPoint::getId));
改:
LinkedHashMap<String, Integer> gridPointRs = gridPointList.stream()
.collect(Collectors.toMap(GridPoint::getGridPointName, GridPoint::getId, (existing, replacement) -> existing, LinkedHashMap::new));