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1、路由信息

const router = createRouter({
	routes:[
        {
			 path:'/selectTreePage/:action/:subject',
			 name:"selectTreePage",
			 component:()=>import('@/pages/home/SelectTreePage')
			 }，...

2、目的：想在 SelectTreePage 组件中获取 action和subject的参数
3、SelectTreePage .vue

<script>
import { onMounted} from 'vue'
import { useRouter } from 'vue-router'
export default {

  setup() {
    const router = useRouter();
    onMounted(() => {
      // 打印
      console.log('router:', router.currentRoute)
      console.log('action', router.currentRoute.value.params.action)
      console.log('subject', router.currentRoute.value.params.subject)
    })
    return {}
  },
}
</script>

4、控制台 router.currentRoute 显示