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我試圖選擇並打印Watir中動態對象的文本。每次生成對象時,它都是一個隨機字符串。不確定如何指向對象。閱讀Watir動態對象的文本
<dd itemprop="trait">
text
</dd>
我試過使用xpath並指向itemprop屬性,但程序只是出錯,當我運行它。不知道這是不可能的xpath或如果我的代碼是不正確的。
def read_dd_itemprop(trait)
itemprop_text = @@browser.element(:xpath, "//dd[@itemprop='" + trait + "')]").text
p itemprop_text
end
堆棧跟蹤:
The given selector //dd[@itemprop='trait')] is either invalid or does not result in a WebElement. The following error occurred:
InvalidSelectorError: Unable to locate an element with the xpath expression //dd[@itemprop='trait')] because of the following error:
[Exception... "The expression is not a legal expression." code: "12" nsresult: "0x805b0033 (SyntaxError)" location: "file:///var/folders/bv/4z13hkpn095bytggxzrx4l9h0000gp/T/webdriver-profile20130715-7256-ihkq92/extensions/[email protected]/components/driver_component.js Line: 5773"] (Selenium::WebDriver::Error::InvalidSelectorError)
[remote server] file:///var/folders/bv/4z13hkpn095bytggxzrx4l9h0000gp/T/webdriver-profile20130715-7256-ihkq92/extensions/[email protected]/components/driver_component.js:8379:in `FirefoxDriver.annotateInvalidSelectorError_'
[remote server] file:///var/folders/bv/4z13hkpn095bytggxzrx4l9h0000gp/T/webdriver-profile20130715-7256-ihkq92/extensions/[email protected]/components/driver_component.js:8410:in `FirefoxDriver.prototype.findElementInternal_'
[remote server] file:///var/folders/bv/4z13hkpn095bytggxzrx4l9h0000gp/T/webdriver-profile20130715-7256-ihkq92/extensions/[email protected]/components/driver_component.js:8414:in `FirefoxDriver.prototype.findElement'
[remote server] file:///var/folders/bv/4z13hkpn095bytggxzrx4l9h0000gp/T/webdriver-profile20130715-7256-ihkq92/extensions/[email protected]/components/command_processor.js:10421:in `DelayedCommand.prototype.executeInternal_/h'
[remote server] file:///var/folders/bv/4z13hkpn095bytggxzrx4l9h0000gp/T/webdriver-profile20130715-7256-ihkq92/extensions/[email protected]/components/command_processor.js:10426:in `DelayedCommand.prototype.executeInternal_'
我是關閉?這是一個合理的方法,還是應該採取不同的角度?
這是指向特質,我做了一個糟糕的工作,適當地編輯堆棧跟蹤,因爲我現在有點睡眠剝奪。這也可能是這個錯誤的根源,因爲修復工作非常完美。謝謝。 –