需求： 

写法： 

对应 文件目录 

pages\product\[class]\[brand]\[SPU].vue
 

pages/
--| product/

----| [class]

------| [brand]

--------| [SPU].vue

 script 内跳转方法

const router = useRouter()
const nuxtApp = useNuxtApp()

const jumpSPU = () => {
  const params = {
    class: item.class || '_',
    brand: item.brand || '_',
    SPU: item.id
  }
  router.push(nuxtApp.$localePath({ name: 'product-class-brand-SPU', params }))
}