如何在页面刷新时获取 onMounted 中的当前路线？

Question

重新加载页面时，我想获取当前路线。可悲的是route.name 是undefined，router.currentRoute 是RefImpl 对象，它有正确的路线，里面有'/team'。 router.currentRoute.value 只是根 '/'，而不是 '/team'，正如预期的那样。是否可以从RefImpl 获得正确的值？

import { useRouter, useRoute } from 'vue-router'

export default {
  name: 'Canvas',
  components: { Ring2, Map },
  setup() {
    const router = useRouter()
    const route = useRoute()

    onMounted(() => {

      console.log(route.name) //undefined
      console.log(router.currentRoute) //RefImpl with correct value ('/team')
      console.log(router.currentRoute.value) // route is '/'
      const rawObject = {...router.currentRoute}
      console.log(rawObject) // value is '/'
      ...

路由器是这样设置的：

import { createRouter, createWebHistory } from 'vue-router'
import Home from '../views/Home.vue'

const routes = [
  {
    path: '/',
    name: 'Home',
    component: Home
  },
  {
    path: '/team',
    name: 'Team',
    component: () => import('../views/Team.vue')
  },
   ...
]

const router = createRouter({
  history: createWebHistory(process.env.BASE_URL),
  routes
})

export default router

Answer 1

出现这种情况是因为当您刷新页面时路由器尚未完全解析初始导航，因此route 最初指的是onMounted 中的默认值 (/)。

Vue 路由器的isReady() 返回一个Promise，它在路由器完成初始导航时解析，因此您的onMounted 钩子可以await 认为Promise 在尝试读取route.path 之前：

import { useRoute, useRouter } from 'vue-router'
import { onMounted } from 'vue'

export default {
  setup() {
    const route = useRoute()
    const router = useRouter()

    onMounted(async () => {
      await router.isReady() ?
      console.log('route.path', route.path)
    })
  },
}

demo

Answer 2

尝试使用可组合函数 useRoute ：

import {
   useRoute
} from 'vue-router'
import {
   computed
} from 'vue'


setup() {
   const route = useRoute();

   const path = computed(() => route.path)
}