升级vue2.7，this的使用

import {onMounted, ref,onUnmounted,getCurrentInstance } from 'vue'
import router from "../router";
const { proxy } = getCurrentInstance() 

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



    // const router = useRouter()
    
    let getProduct=()=>{ 
        // router.push('/product')

        proxy.$router.push('/product')
    }