父级路由与子路由的path重复时，可将父级路由的name注释

export default new Router({
    routes:[
        {
            path:'/',
            component:Exaindex,
            children:[
                 {
                     path:'/',
                     name:'exaList',
                    component:ExaList,
                    meta:{title:'首页'}
                }
            ]
        }
    ]
})