我试图点击stackoveflow水平菜单上的所有链接(问题,标签,用户,徽章,未答复)。我有这个代码但是点击第一个链接(这个链接是问题),然后打印1,然后引发错误。这可能有什么问题?
require 'watir-webdriver'
class Stackoverflow
def click_all_nav_links
b = Watir::Browser.new
b.goto "http://stackoverflow.com"
counter = 0
b.div(:id => 'hmenus').div(:class => 'nav mainnavs').ul.lis.each do |li|
li.a.click
puts counter += 1
end
end
end
stackoverflow = Stackoverflow.new
stackoverflow.click_all_nav_links
答案 0 :(得分:15)
StaleElementReferenceError经常在存储元素时发生,然后在转到另一个页面后尝试访问它们。在这种情况下,单击链接并导航到新页面后,对lis的引用将变为陈旧。
您必须首先存储属性或lis的索引。这样,您可以在点击链接后获得每个li的新参考。
试试这个:
class Stackoverflow
def click_all_nav_links
b = Watir::Browser.new
b.goto "http://stackoverflow.com"
#Store the text of each locate so that it can be located later
tabs = b.div(:id => 'hmenus').div(:class => 'nav mainnavs').ul.lis.collect{ |x| x.text }
#Iterate through the tabs, using a fresh reference each time
tabs.each do |x|
b.div(:id => 'hmenus').div(:class => 'nav mainnavs').ul.li(:text, x).a.click
end
end
end
stackoverflow = Stackoverflow.new
stackoverflow.click_all_nav_links