Question

我想在使用driver.get "http://www.example.com"加载的页面中打开新浏览器标签中的所有点击链接。我在之前问过的其他问题中得到了答案，但它没有按照我的预期工作。代码如下：

require 'rubygems'
require 'selenium-webdriver'

driver = Selenium::WebDriver.for :firefox
driver.get " http://www.testfire.net "

driver.find_elements(:tag_name, "a").each {|link| link.click }

运行此代码后，Selenium Web Driver会打开Firefox，加载请求的页面并点击它找到的第一个锚标记，然后崩溃并显示错误。

我也试过这个driver.find_element(:tag_name, "a").send_keys [:control,'t']这个打开新标签但没有加载页面，空白标签。

如何在循环中安排此操作，以便我不会收到错误，第一个加载页面上的所有点击链接将在单独的浏览器标签中打开？

我是否需要使用wait来实现此目的？

[remote server] resource://fxdriver/modules/web_element_cache.js:9500:in `unknown': Element not found in the cache - perhaps the page has changed since it was looked up (Selenium::WebDriver::Error::StaleElementReferenceError)
        from [remote server] file:///C:/Users/AKASH/AppData/Local/Temp/webdriver-profile20120427-1496-sev0j4/extensions/fxdriver@googlecode.com/components/command_processor.js:9069:in `unknown'
        from [remote server] file:///C:/Users/AKASH/AppData/Local/Temp/webdriver-profile20120427-1496-sev0j4/extensions/fxdriver@googlecode.com/components/command_processor.js:9504:in `unknown'
        from [remote server] file:///C:/Users/AKASH/AppData/Local/Temp/webdriver-profile20120427-1496-sev0j4/extensions/fxdriver@googlecode.com/components/command_processor.js:10510:in `unknown'
        from [remote server] file:///C:/Users/AKASH/AppData/Local/Temp/webdriver-profile20120427-1496-sev0j4/extensions/fxdriver@googlecode.com/components/command_processor.js:10529:in `unknown'
        from [remote server] file:///C:/Users/AKASH/AppData/Local/Temp/webdriver-profile20120427-1496-sev0j4/extensions/fxdriver@googlecode.com/components/command_processor.js:10534:in `unknown'
        from [remote server] file:///C:/Users/AKASH/AppData/Local/Temp/webdriver-profile20120427-1496-sev0j4/extensions/fxdriver@googlecode.com/components/command_processor.js:10482:in `unknown'
        from D:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.20.0/lib/selenium/webdriver/remote/response.rb:52:in `assert_ok'
        from D:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.20.0/lib/selenium/webdriver/remote/response.rb:15:in `initialize'
        from D:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.20.0/lib/selenium/webdriver/remote/http/common.rb:59:in `new'
        from D:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.20.0/lib/selenium/webdriver/remote/http/common.rb:59:in `create_response'
        from D:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.20.0/lib/selenium/webdriver/remote/http/default.rb:64:in `request'
        from D:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.20.0/lib/selenium/webdriver/remote/http/common.rb:40:in `call'
        from D:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.20.0/lib/selenium/webdriver/remote/bridge.rb:594:in `raw_execute'
        from D:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.20.0/lib/selenium/webdriver/remote/bridge.rb:572:in `execute'
        from D:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.20.0/lib/selenium/webdriver/remote/bridge.rb:354:in `clickElement'
        from D:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.20.0/lib/selenium/webdriver/common/element.rb:34:in `click'
        from selclick.rb:6:in `block in <main>'
        from selclick.rb:5:in `each'
        from selclick.rb:5:in `<main>'

Answer 1

我相信这是“按预期工作。”

循环的第一次迭代正常工作，然后每次循环失败。原因完全由错误给出。由于页面已重新加载，因此对象引用不再指向正确的链接。

我不确定这是否清楚，所以让我们完全了解最新情况。

您访问了自己的网页。所有链接都以数组形式收集。在循环的第一次迭代中，单击第一个链接。您访问的链接只是同一页面。您不再在以前的页面上。循环的第二次迭代查找上一页的链接。它不在了，因为你在下一页。因此，错误。

你想要完成的是什么？您是否尝试访问该网站的每个页面？

如果您尝试抓取该网站，我可以推荐使用Mechanize或Anemone吗？

Answer 2

Java

List<WebElement> elements = driver.find_elements( _locator_ );
for (i=0; i<elements.size(); i++) {
    List<WebElement> elements2 =driver.find_elements(_locator_) 

    WebElement ele = elements2.get(i);

    ele.click();
}

单击所有链接并使用Selenium Ruby打开新选项卡中的所有单击链接

2 个答案: