antd 上传图片获取宽高

    // 尺寸

    getFileWidthAndHeight (file) {

      const _URL = window.URL || window.webkitURL

      const img = new Image()

      img.onload = function () {

        console.log('width , height ', img.width, img.height)

      }

      img.src = _URL.createObjectURL(file)

    }

    handleBeforeUpload (file, fileList) {  // 上传回调
      return new Promise(async (resolve, reject) => {
        this.getFileWidthAndHeight(file)   //看这里
        console.log('handleBeforeUpload...', this.params, file)


        const imageReg = /.(gif|jpg|jpeg|png|webp|GIF|JPG|JPEG|PNG|WEBP)$/
        if (imageReg.test(file.name)) {
          return this.GetUploadSinature(this.params).then(() => resolve())
        }
        const errText = '请选择图片上传'
        this.$message.error(errText)
        // eslint-disable-next-line prefer-promise-reject-errors
        reject()
      })
    },

// 待补充，实时获取的file格式