springboot + vue 实现递归生成多级菜单

开发过程中,涉及到多级菜单的应用,找了一些资料案例实现如下(使用springboot+layui+oracle):

创建菜单表 :

-- 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);

 实体类 WxMenu.java:

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 < wxMenus.size(); i++) {
            // 一级菜单没有父菜单,为null
            if (StringUtils.isBlank(wxMenus.get(i).getParent_id())) {
                menuList.add(wxMenus.get(i));
            }
        }
        // for调用递归,循环获取所有子菜单
        for (WxMenu menu : menuList) {
            menu.setChildMenus(getChildmenus(menu.getMenu_id(), wxMenus));
        }
        //存储所有菜单,将数据回传至 layui 前端
        map.put("menus", menuList);

        return LayuiJsonFormat.createBySuccess(map.size(),map);
    }


    /**
     * 递归子菜单
     * @param id
     * @param wxMenus
     * @return
     */
    private List 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;
    }
}

service类 WxUserService.java

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();
}

mybatis sql :





    
    

最后,前端样式使用 layui ,html + js 如下:








最后效果图如下:

springboot + vue 实现递归生成多级菜单_第1张图片

 

如有不足或有误,望各位不吝指教,多多交流,谢谢。

 

你可能感兴趣的:(Java,SpringBoot,vue)