Selenium Webdriver - firefox中的元素無法點擊錯誤

Question

通常出現在chrome驅動程序中的元素不可點擊錯誤恰好也在firefox中顯示。 顯示的錯誤消息：

  Exception in thread "main" org.openqa.selenium.WebDriverException: Element is not clickable at point (141, 299.29998779296875). Other element would receive the click: <div class="showOnTop" id="loadingPanelContainer"></div>
Command duration or timeout: 209 milliseconds
Build info: version: '2.51.0', revision: '1af067dbcaedd7d2ab9af5151fc471d363d97193', time: '2016-02-05 11:20:57'
System info: host: 'Bhaveen-ThinkPad', ip: '127.0.1.1', os.name: 'Linux', os.arch: 'i386', os.version: '3.13.0-77-generic', java.version: '1.7.0_95'
Session ID: 08e0d738-b946-4886-a179-9659d44b717b
Driver info: org.openqa.selenium.firefox.FirefoxDriver
Capabilities [{platform=LINUX, acceptSslCerts=true, javascriptEnabled=true, cssSelectorsEnabled=true, databaseEnabled=true,    browserName=firefox, handlesAlerts=true, nativeEvents=false, webStorageEnabled=true, rotatable=false, locationContextEnabled=true,  applicationCacheEnabled=true, takesScreenshot=true, version=44.0.2}]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:206)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:158)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:678)
    at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:327)
    at org.openqa.selenium.remote.RemoteWebElement.click(RemoteWebElement.java:85)
    at config.KeyActions.handleLeftMenu(KeyActions.java:479)
    at scripts.Vital_Data_Script.setVitalData(Vital_Data_Script.java:383)
    at scripts.Vital_Data_Script.executeActions(Vital_Data_Script.java:95)
    at scripts.Vital_Data_Script.executeTestCase(Vital_Data_Script.java:60)
    at scripts.Vital_Data_Script.main(Vital_Data_Script.java:31)

Answer 1

您可能應該等待元素可點擊，您可以使用：

WebDriverWait wait = new WebDriverWait(driver, 30); 
wait.until(ExpectedConditions.elementToBeClickable(By.<your locator>));

或者有時你甚至需要將鼠標懸停在元素上以使其可點擊。 你可以這樣做：

String mouseOverScript = "if(document.createEvent){var evObj = document.createEvent('MouseEvents');evObj.initEvent('mouseover', true, false); arguments[0].dispatchEvent(evObj);} else if(document.createEventObject) { arguments[0].fireEvent('onmouseover');}";
            ((JavascriptExecutor) driver).executeScript(mouseOverScript,
                     driver.findElement(By.<your locator>));

完成后，您可以嘗試：

普通的click（）函數：

driver.findElement(By.<your locator>).click();

要么

非本地javascript執行程序：

JavascriptExecutor executor = (JavascriptExecutor) driver;
executor.executeScript("arguments[0].click();",  driver.findElement(By.<your locator>));

Answer 2

Prateek的回答是正確的。 然而，我注意到最新版本的Firefox和Selenium 2.50.1的一點是它並不總是成功地將元素滾動到視圖中。

如果您的問題是元素從屏幕上滾動（並且因此在標題欄之類的東西下），您可以嘗試將其滾動回視圖，如下所示：

private void scrollToElementAndClick(WebElement element) {
    int yScrollPosition = element.getLocation().getY();
    js.executeScript("window.scroll(0, " + yScrollPosition + ");");
    element.click();
}

如果需要，還可以添加靜態偏移量（例如，如果頁面標題高200像素且始終顯示）：

    public static final int HEADER_OFFSET = 200;

    private void scrollToElementAndClick(WebElement element) {
    int yScrollPosition = element.getLocation().getY() - HEADER-OFFSET;
    js.executeScript("window.scroll(0, " + yScrollPosition + ");");
    element.click();
}