微信小程序swiper使用网络图片不显示问题

<view class="container">
      <swiper indicator-dots="true}"
        autoplay="true" interval="3000" duration="1">
        <block wx:for="{{imgUrls}}" wx:key="*this">
          <swiper-item>
            <image src="{{item}}" width="355" height="150"></image>
          </swiper-item>
        </block>
      </swiper>
</view>

data: {
    imgUrls: [
      "http://img0.imgtn.bdimg.com/it/u=2394972844,3024358326&fm=26&gp=0.jpg",
      "http://img5.imgtn.bdimg.com/it/u=3008142408,2229729459&fm=26&gp=0.jpg",
      "http://img4.imgtn.bdimg.com/it/u=2939038876,2702387014&fm=26&gp=0.jpg"
    ]
}

.container{
  width: 100%;
}
.container swiper{
  width: 100%;
}