vue 使用v-for引入本地图片

data () {
    return {
      banner: [
      {img: require('./img/banner1.jpg')},
      {img: require('./img/banner2.jpg')},
      {img: require('./img/banner3.jpg')},
      {img: require('./img/banner4.jpg')}
      ],
<swiper-slide v-for="(item,index) in banner" :key="index">
          <a>
            <img :src="item.img">
          </a>
        </swiper-slide>