WebDriver（自v2.21.0起）无法执行此操作。您可以尝试将通常的
findElement(By)方法替换为经过调整的方法，该方法使用Javascript突出显示找到的元素：
// Draws a red border around the found element. Does not set it back anyhow.public WebElement findElement(By by) { WebElement elem = driver.findElement(by); // draw a border around the found element if (driver instanceof JavascriptExecutor) { ((JavascriptExecutor)driver).executescript("arguments[0].style.border='3px solid red'", elem); } return elem;}现在您有了主意，有一个改进的版本，
border当找到一个新元素并将其突出显示时，它将还原最后一个元素的原始内容：
// assuming JS is enabledprivate JavascriptExecutor js = (JavascriptExecutor)driver;private WebElement lastElem = null;private String lastBorder = null;private static final String script_GET_ELEMENT_BORDER;private static final String script_UNHIGHLIGHT_ELEMENT;void highlightElement(WebElement elem) { unhighlightLast(); // remember the new element lastElem = elem; lastBorder = (String)(js.executescript(script_GET_ELEMENT_BORDER, elem));}void unhighlightLast() { if (lastElem != null) { try { // if there already is a highlighted element, unhighlight it js.executescript(script_UNHIGHLIGHT_ELEMENT, lastElem, lastBorder); } catch (StaleElementReferenceException ignored) { // the page got reloaded, the element isn't there } finally { // element either restored or wasn't valid, nullify in both cases lastElem = null; } }}还有脚本！我使用从文件加载它们
FileUtils.readFileToString()。
script_GET_ELEMENT_BORDER（从此站点获取的IE友好版本），如果它通过更改背景颜色（例如仅是底部边框）使用突出显示功能，则会更短。但这是最好的一个:)。
var elem = arguments[0]; if (elem.currentStyle) { // Branch for IE 6,7,8. No idea how this works on IE9, but the script // should take care of it. var style = elem.currentStyle; var border = style['borderTopWidth'] + ' ' + style['borderTopStyle'] + ' ' + style['borderTopColor'] + ';' + style['borderRightWidth'] + ' ' + style['borderRightStyle'] + ' ' + style['borderRightColor'] + ';' + style['borderBottomWidth'] + ' ' + style['borderBottomStyle'] + ' ' + style['borderBottomColor'] + ';' + style['borderLeftWidth'] + ' ' + style['borderLeftStyle'] + ' ' + style['borderLeftColor'];} else if (window.getComputedStyle) { // Branch for FF, Chrome, Opera var style = document.defaultView.getComputedStyle(elem); var border = style.getPropertyValue('border-top-width') + ' ' + style.getPropertyValue('border-top-style') + ' ' + style.getPropertyValue('border-top-color') + ';' + style.getPropertyValue('border-right-width') + ' ' + style.getPropertyValue('border-right-style') + ' ' + style.getPropertyValue('border-right-color') + ';' + style.getPropertyValue('border-bottom-width') + ' ' + style.getPropertyValue('border-bottom-style') + ' ' + style.getPropertyValue('border-bottom-color') + ';' + style.getPropertyValue('border-left-width') + ' ' + style.getPropertyValue('border-left-style') + ' ' + style.getPropertyValue('border-left-color');}// highlight the elementelem.style.border = '2px solid red';return border;script_UNHIGHLIGHT_ELEMENT
var elem = arguments[0];var borders = arguments[1].split(';');elem.style.borderTop = borders[0];elem.style.borderRight = borders[1];elem.style.borderBottom = borders[2];elem.style.borderLeft = borders[3];欢迎任何问题，注释，要求和改进！
