后端代碼遍歷樹結構代碼：

privateList<AlertTree> buildMenuTree(List<AlertTree>list , Integer pid){

????List<AlertTree> treeList = new ArrayList<>();

????list.forEach(menu->{

????????if(pid==menu.getCateParentId()){

????????????menu.setChildList(buildMenuTree(list,menu.getId()));

????????????treeList.add(menu);

????????}

????});

????returntreeList;

}