switch(this.imgsList.length) {
case 4:
this.img4 = this.imgsList[3] case 3:
this.img3 = this.imgsList[2] case 2:
this.img2 = this.imgsList[1] case 1:
this.img1 = this.imgsList[0]}
let obj = {
goods_img1: this.img1,
goods_img2:this.img2,
goods_img3:this.img3,
goods_img4:this.img4
}
//将信息发送给后端
this.actionPublish(obj)
