Selenium:：WebDriver:：Error:：UnhandleAlerError:脚本执行失败。打开的模式对话框阻止了该操作

我注意到了一些奇怪的事情。如果我使用Firefox，这很好：

require "selenium-webdriver"
# => true 

driver = Selenium::WebDriver.for :firefox
# => #<Selenium::WebDriver::Driver:0x..fc3c6738535bdb898 browser=:firefox> 

driver.execute_script "window.alert('text');"
# => "text" 

需要“selenium webdriver”
#=>正确
driver=Selenium:：WebDriver.for:firefox
# => # 
driver.execute_脚本“window.alert（'text'）；”
#=>“文本”

警报弹出窗口打开

如果我对Chrome执行相同操作，则会打开警报弹出窗口，但会出现异常：

driver = Selenium::WebDriver.for :chrome
# => #<Selenium::WebDriver::Driver:0x47f3180ec45394e8 browser=:chrome> 

driver.execute_script "window.alert('text');"
Selenium::WebDriver::Error::UnhandledAlertError: Script execution failed. Script: window.alert('text');;
 An open modal dialog blocked the operation
    from /Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/response.rb:52:in `assert_ok'
    from /Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/response.rb:15:in `initialize'
    from /Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/common.rb:59:in `new'
    from /Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/common.rb:59:in `create_response'
    from /Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/default.rb:64:in `request'
    from /Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/common.rb:40:in `call'
    from /Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/bridge.rb:590:in `raw_execute'
    from /Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/bridge.rb:568:in `execute'
    from /Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/bridge.rb:314:in `executeScript'
    from /Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/common/driver.rb:209:in `execute_script'
    from (irb):14
    from /Users/zeljko/.rvm/rubies/ruby-1.9.2-p290/bin/irb:16:in `<main>'

driver=Selenium:：WebDriver.for:chrome
# => # 
driver.execute_脚本“window.alert（'text'）；”
Selenium:：WebDriver:：Error:：UnhandleAlerError:脚本执行失败。脚本：window.alert（'text'）；；
打开的模式对话框阻止了该操作
来自/Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/response.rb:52:in'assert_ok'
来自/Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/response.rb:15:in'initialize'
来自/Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/common.rb:59:in'new'
来自/Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/common.rb:59:in'create_response'
来自/Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/default.rb:64:in'request'
来自/Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/http/common.rb:40:in'call'
来自/Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/bridge.rb:590:in'raw_execute'
来自/Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/bridge.rb:568:in'execute'
来自/Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/remote/bridge.rb:314:in'executeScript'
来自/Users/zeljko/.rvm/gems/ruby-1.9.2-p290@gretel/gems/selenium-webdriver-2.19.0/lib/selenium/webdriver/common/driver.rb:209:in'execute_script'
来自（irb）：14
from/Users/zeljko/.rvm/rubies/ruby-1.9.2-p290/bin/irb:16:in`'

我做错什么了吗

环境：

• Mac OS X 10.7.3
• 火狐10.0.2
• 铬17.0.963.56
• chromedriver_mac_18.0.1022.0
• Ruby 1.9.2p290
• selenium webdriver 2.19.0

---

使用chromedriver按如下方式重试。 Java的示例：

ChromeDriver driver = new ChromeDriver();

driver.executeAsyncScript("arguments[0](); alert('Hello')");
try {
    Thread.sleep(3000);
} catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

---

为什么要通过执行脚本触发警报？这在WebDriver中被认为是未定义的行为，因此驱动程序的行为不同也就不足为奇了。@jarib:这只是创建弹出窗口的最简单方法。你是说，如果通过单击页面上的按钮（或类似按钮）触发警报，其行为会有所不同吗？让我试试…@jarib:真的，如果警报是由页面触发的，Chrome和Firefox都没有例外。添加您的评论作为答案，我将接受。：）请更详细地记下这个问题。我必须在这个对话框中单击WebDriver的“接受”。怎样