地址栏输入没权限的页面阻止跳转vue-router

commin.js

  getPathList(menuList){
    if(!menuList?.length) return [];
    const pathList = menuList.flatMap(item=>{
      const {highestRoleMenuVos,path} = item;
      if(highestRoleMenuVos.length) return highestRoleMenuVos.map(menuItem=>menuItem.path);
      return path;
    })
    return pathList;
  }

main.js

router.beforeEach(async (to, from, next) => {
  const role = common.getCookie("supply_token");
  let menuList = store.state.menuList;
  if (role) {
    // 登录状态
    if (to.path == "/login") {
      next("/");
    } else if(to.path == '/404'){
      next();
    }else {
      // 查看是否存在动态menu等用户信息 不存在则获取动态菜单数据
      console.log(menuList, typeof menuList);
      if (menuList.length == 0) {
        menuList = await store.dispatch("getMenuPermission");
        const pathList = common.getPathList(menuList);
        if (!pathList.includes(to.path)) {
          next({ path: '/404' });
        } else {
          next({ ...to, replace: true });
        }
      } else {
        const pathList = common.getPathList(menuList);
        if (!pathList.includes(to.path)) { next({ path: '/404' }) } else {
          next();
        };

      }
    }
  } else {
    // 当前用户 未登录
    if (to.path == "/login") {
      next();
    } else {
      next("/login");
    }
  }
});

flatMap的案例

// 只会将 flatMap 中的函数返回的数组 “压平” 一层
const arr = [1, 2, 3].flatMap((x) => [[x * 2]]);
console.log(arr, "arr");

// 数组对象里面嵌在数组对象 =》进行扁平化

const datayin = [
  {
    code: 1001,
    name: "zs",
    age: 12,
    address: "重庆",
    mark: "",
    sourceCodeList: [
      { checked: false, num: 0, mark: "主导打包" },
      { checked: true, num: 1, mark: "333" },
    ],
  },
  {
    code: 1002,
    name: "ls",
    age: 15,
    address: "武汉",
    sourceCodeList: [
      { checked: false, num: null, mark: "1111" },
      { checked: true, num: 1, mark: "111" },
    ],
  },
  {
    code: 1003,
    name: "ww",
    age: 15,
    address: "深圳",
    sourceCodeList: [{ checked: false, num: 11, mark: "" }],
  },
];
const stockRegisterDetailList2 = datayin.flatMap(
  ({ sourceCodeList, ...parent }) => {
    if (sourceCodeList.length) {
      return sourceCodeList.map((v) => ({ ...v, ...parent }));
    }
  }
);

console.log(stockRegisterDetailList2, "stockRegisterDetailList2");

菜单权限返回值【如果是一菜单里有二级菜单的话，那其实一级菜单没有路由的【只是展示】，如果只有一级菜单那就是路由】

1.如果里面的highestRoleMenuVos长度大于0，说明有二级菜单遍历返回二级菜单的所有【path】
2.如果里面的highestRoleMenuVos长度等于0，直接返回解构出来的【path】
3.最后就会将一级菜单与二级菜单的path组合到一个数组返回出去

function getFlat() {
  if (routesList.length == 0) return [];
  const pathList = routesList.flatMap((item) => {
    const { path, highestRoleMenuVos } = item;
    console.log(path, "item");
    if (highestRoleMenuVos.length) {
      return highestRoleMenuVos.map((v) => v.path);
    }
    return path;
  });
  return pathList;
}
console.log(getFlat());