Java——list转树形结构

public static List<Map> convertListToTree(List<Map> list, String parentColumn, String sonColumn) {
    List<Map> all = list.stream().filter(t ->
            !t.containsKey(sonColumn) || t.get(sonColumn) == null || StringUtils.isBlank(CommonUtils.objToString(t.get(sonColumn)))
    ).map((t) -> {
        t.put("children", getChildren(t, list, parentColumn, sonColumn));
        return t;
    }).collect(Collectors.toList());
    return all;
}
private static List<Map> getChildren(Map type, List<Map> all, String parentColumn, String sonColumn) {
    List<Map> children = all.stream().filter(t ->
            ((String) type.get(parentColumn)).equals((String) t.get(sonColumn))
    ).map((t) -> {
        t.put("children", getChildren(t, all, parentColumn, sonColumn));
        return t;
    }).collect(Collectors.toList());
    return children;
}

CommonUtils.convertListToTree(new ArrayList<>(cfxxList), "id", "parentId");