private static List<DepartIdModel> idList = new ArrayList<>(4);


    /**
     * queryTreeList的子方法 ====1=====
     * 该方法是s将SysDepart类型的list集合转换成SysDepartTreeModel类型的集合
     */
    public static List<SysDepartTreeModel> wrapTreeDataToTreeList(List<SysDepart> recordList) {
     // 在该方法每请求一次,都要对全局list集合进行一次清理
        idList.clear();
        List<SysDepartTreeModel> records = new ArrayList<>();
        for (int i = 0; i < recordList.size(); i++) {
            SysDepart depart = recordList.get(i);
            records.add(new SysDepartTreeModel(depart));
        }
        List<SysDepartTreeModel> tree = findChildren(records, idList);
        setEmptyChildrenAsNull(tree);
        return tree;
    }