java - Selenium DoubleClick WebElement 导致错误

Question

我使用下面的代码来刺激鼠标双击按钮，但是，我收到一个编译错误，该错误指向操作，但我不知道如何修复它。

Actions act = new Actions(driver);
    act.doubleClick(driver.findElement(By.id("dijit_form_Button_0_label"))).build().perform();
    logger1.info("Logout Successful");

org.testng.TestNGException: 
Cannot instantiate class testNG.RAD3398LogoutTwiceTest
Caused by: java.lang.reflect.InvocationTargetException
    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.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:29)
    ... 21 more
Caused by: java.lang.NullPointerException
    at org.openqa.selenium.interactions.Actions.<init>(Actions.java:44)
    at testNG.RAD3398LogoutTwiceTest.<init>(RAD3398LogoutTwiceTest.java:25)
    ... 26 more

有什么想法吗？

Answer 1

您可以尝试使用 javascript 触发双击事件。 这就是我从 Selenium 触发点击事件的方法，我想你可以调整它来触发双击

    public static void phantomClick (WebDriver driver, WebElement element){
        final String script = "function ghostclick(el){var ev = document.createEvent(\"MouseEvent\");ev.initMouseEvent(\"click\",true ,true,window,null,0,0,0,0,false,false,false,false,0,null);el.dispatchEvent(ev);} return ghostclick(arguments[0])";
        ((JavascriptExecutor) driver).executeScript(script, element);
    }