参数后面使用 ？
id 后面加个 ‘ ? ’ ，将 id 设置为可选参数
{
name: "index",
path: ‘/p/:id?‘,
component: resolve =>void(require([‘../components/admin/layout/index.vue‘], resolve))
}
// ==
{ path: ‘/p/:id?‘, name: ‘index‘, component: Index}原文：https://www.cnblogs.com/huancheng/p/9627730.html