springboot + vue 实现递归生成多级菜单(实例代码)

 -- 创建菜单表 create table wxmini_menus( menu_id         number unique,   --菜单ID menu_name        varchar2(20), menu_url        varchar2(200), menu_icon        varchar2(100), parent_id        number,      --父菜单ID status         varchar2(10), menu_sort        number, last_update_date    DATE not null, last_updated_by     NUMBER not null, creation_date      DATE not null, created_by       NUMBER not null, last_update_login    NUMBER ); -- 插入菜单记录 insert into wxmini_menus values((select 1 from dual),'设置',null,null,null,1,100,sysdate,-1,sysdate,-1,-1); insert into wxmini_menus values((select max(menu_id)+1 from yl_wxmini_menus),'用户',null,null,1,1,null,sysdate,-1,sysdate,-1,-1); insert into wxmini_menus values((select max(menu_id)+1 from yl_wxmini_menus),'网站用户',null,null,1,1,null,sysdate,-1,sysdate,-1,-1); insert into wxmini_menus values((select max(menu_id)+1 from yl_wxmini_menus),'角色管理',null,null,1,1,null,sysdate,-1,sysdate,-1,-1); --主菜单二 insert into wxmini_menus values((select max(menu_id)+1 from yl_wxmini_menus),'主页',null,null,null,1,1,sysdate,-1,sysdate,-1,-1); insert into wxmini_menus values((select max(menu_id)+1 from yl_wxmini_menus),'控制台',null,null,5,1,null,sysdate,-1,sysdate,-1,-1); insert into wxmini_menus values((select max(menu_id)+1 from yl_wxmini_menus),'主页一',null,null,5,1,null,sysdate,-1,sysdate,-1,-1); insert into wxmini_menus values((select max(menu_id)+1 from yl_wxmini_menus),'主页二',null,null,5,1,null,sysdate,-1,sysdate,-1,-1);

 public class WxMenu { private String menu_id; private String menu_name; private String menu_url; private String menu_icon; private String parent_id; private String parent_menu_name; private String status; private String menu_sort; private String last_update_date; private long last_updated_by; private String creation_date; private long created_by; private long last_update_login; private List childMenus; ...... } Controller控制层 : @Controller @RequestMapping("/index") public class IndexController { @Autowired private WxUserService wxUserService; /** * 获取所有菜单数据 * @return */ @ResponseBody @RequestMapping(value = "/loadAuthMenus",method = RequestMethod.GET) public LayuiJsonFormat login(String username, String password, HttpServletRequest request) { // 获取所有菜单数据 List wxMenus = wxUserService.getAllMenus(); //定义 存储一级菜单 List menuList = new ArrayList(); // 先找到所有的一级菜单 for (int i = 0; i  getChildmenus(String id, List wxMenus) { // 子菜单 List childMenus = new ArrayList<>(); for (WxMenu menu : wxMenus) { if (StringUtils.isNotBlank(menu.getParent_id())) { if (menu.getParent_id().equals(id)) { childMenus.add(menu); } } } for (WxMenu menu : childMenus) { //数据库动态存储菜单的url,此时判断url为空的，则是节点菜单（存在子菜单） if (StringUtils.isBlank(menu.getMenu_url())) { // 递归调用 menu.setChildMenus(getChildmenus(menu.getMenu_id(), wxMenus)); } } if (childMenus.size() == 0) { return null; } return childMenus; } }

 public interface WxUserService { //获取所有菜单 List getAllMenus(); } service实现类： @Service("wxUserService") public class WxUserServiceImpl implements WxUserService { @Autowired private WxUserMapper wxUserMapper; @Override public List getAllMenus() { return wxUserMapper.getAllMenus(); } } mapper： public interface WxUserMapper { List getAllMenus(); }

    select * from wxmini_menus wm order by wm.menu_sort asc  最后，前端样式使用 layui ，html + js 如下： 
 
 
  {{ menu.menu_name }}
 
 {{ child.menu_name }}