antd 上傳圖片獲取寬高

    // 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) {  // 上傳回調 
           
          
                  return new Promise(async (resolve, reject) => { 
           
          
                    this.getFileWidthAndHeight(file)   //看這里 
           
          
                    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 = '請選擇圖片上傳' 
           
          
                    this.$message.error(errText) 
           
          
                    // eslint-disable-next-line prefer-promise-reject-errors 
           
          
                    reject() 
           
          
                  }) 
           
          
                }, 
           
         

// 待補充，實時獲取的file格式