Selenium2 鼠标悬停效果实现

对一些js控件，鼠标悬停的时候出发下拉层的实现

1.使用Action

public void moveToElement(WebDriver driver, By locator) {  
    Actions builder = new Actions(driver);  
    builder.moveToElement(driver.findElement(locator)).perform();  
 
} 

2.使用SendKeys

public void moveToElement(WebDriver driver, By locator) {  
        driver.findElement(locator).sendKeys(Keys.DOWN);  
}