对List <Map <String,Object >>进行排序

public class MapComparator implements Comparator<Map<String, Object>> {
    private String key;

    public MapComparator(String key) {
        this.key = key;
    }

    @Override
    public int compare(Map<String, Object> o1, Map<String, Object> o2) {
        if (o1.get(key) instanceof Comparable && o2.get(key) instanceof Comparable) {
            return ((Comparable) o1.get(key)).compareTo(o2.get(key));
        }
        return 0;
    }
}

List<Map<String, Object>> list = new ArrayList<>();
// 添加数据到list中

Collections.sort(list, new MapComparator("key"));