在watir-webdriver中保存圖像

Question

我需要將圖像從recaptcha保存到localhost磁盤，我使用watir-webdriver獲取圖像dom元素，但它不支持save方法，正如watir那樣。那麼如何將圖像保存到我的磁盤？ HTML：

<div id="recaptcha_image" style="width: 300px; height: 57px;"> 
    <img style="display:block;" alt="Проверка по слову reCAPTCHA" height="57" width="300" src="https://www.google.com/recaptcha/api/image?c=03AHJ_VusSUxF0IYURRcVTVTjJJnUk92j-hXYsuwqvu0m5tvKFzAnwvrHlz-j_Gfqg-sUrHLj3D2DrUYNNg4uvr2BNgZqlK5vpJUJVYkkWo36I4RRmRGkYZru5kBYhzPCCn49KlH6wW_iLw6vIzv7vnhpu6ndqxb-9SkIRrVYyBwN39kg18Lov7Hc"> 
</div> 

和Ruby代碼：

cap = @browsers[i].div(:id => 'recaptcha_image').image 

如何鏡像文件保存到磁盤？

Answer 1

require 'watir-webdriver'  
require 'open-uri' 

image_src = @browsers[i].div(:id => 'recaptcha_image').image.src 

File.open("/path/", 'wb') do |f| 
    f.write open(image_src).read 
end 

Answer 2

您可以使用Ruby的open-uri如下：

require 'open-uri' 

url = "the image url" #https://www.google.com/recaptcha/api/image?c=03A.... 

File.open("./image.jpg", "wb") do |file_write| 
    open(url, 'rb') do |file_read| 
    file_write.write(file_read.read) 
    end 
end 

Answer 3

require 'watir-get-image-content' 
    def save_captcha(@browser)  
     img = @browser.image(xpath: '//*[@id="ctl00_captcha"]/td[2]/div[1]/span[1]/img')   
     filename = "#{@path}/tmp/current_captcha.jpg" 
     File.open(filename, 'wb'){|file| file.write(img.to_jpg) }   
    end