java中展开树集合

/**
 * java中展开树集合
 *
 * @param childrenKey 子集key
 * @param treeData    树数据
 * @param result      集合数据
 * @param <T>         List
 */
public static <T> List<T> treeToList(String childrenKey, List<T> treeData, List<T> result) {
    for (T treeDatum : treeData) {
        result.add(treeDatum);
        List<T> children = (List<T>) ReflectUtil.getFieldValue(treeDatum, childrenKey);
        if (CollUtil.isNotEmpty(children)) {
            treeToList(childrenKey, children, result);
        }
    }
    return result;
}