鼠标悬停显示二级菜单 点击下拉列表

第一种悬停方法：

WebElement menu1=driver.......

WebElement menu2=driver.......

Actions builder = new Actions(driver);

Actions hoverOverRgeistrar = builder.moveToElement(menu1);

hoverOverRgeistrar.perform();

menu2.click();

// builder.moveToElement(element).perform();

注：不过此方法不能完全模拟鼠标悬停，而且会导致二级菜单闪现，需要用到JavaScript

第二种悬停方法：

public static void MouseHoverByJavaScript(WebElement targetElement,WebDriver driver) {

  String mouseHoverjs ="var evObj = document.createEvent('MouseEvents');"+"evObj.initMouseEvent(\"mouseover\",
  true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);"+"arguments[0].dispatchEvent(evObj);";

  JavascriptExecutor js = (JavascriptExecutor)driver;

  js.executeScript(mouseHoverjs, targetElement);

}