显示等待

WebDriverWait

超时抛出TimeOutException，默认500毫秒

public class WaitToReturnElement {

/*   * 设置超时时间为5秒，返回指定xpath的WebElement   * */   public static WebElement waitForByXpath(final WebDriver driver,final String xpath) {      WebDriverWait wait = new WebDriverWait(driver, 5);      return wait.until(new ExpectedCondition<WebElement>() {

public WebElement apply(WebDriver arg0) {            return driver.findElement(By.xpath(xpath));         }

});   }

/*   * 设置超时时间为10秒，返回指定id的WebElement   * */   public static WebElement waitForById(final WebDriver driver,final String id) {      WebDriverWait wait = new WebDriverWait(driver, 10);      return wait.until(new ExpectedCondition<WebElement>() {

public WebElement apply(WebDriver arg0) {            return driver.findElement(By.id(id));         }

});   }

/*   * 设置超时时间为10秒，返回指定xpath的WebElement是否出现   * */   public static Boolean isElementDisplayed(final WebDriver driver,final String xpath) {      WebDriverWait wait = new WebDriverWait(driver, 10);      return wait.until(new ExpectedCondition<Boolean>() {

public Boolean apply(WebDriver arg0) {            return driver.findElement(By.xpath(xpath)).isDisplayed();         }              });   }

}

ExpectedCondition

等待元素直到可点击状态WebDriverWait wait=new WebDriverWait(driver,10);wait.until(ExpectedConditions.elementToBeClickable(By.xpath("")));

隐式等待

查找WebDriver无法使用的元素时等待，默认0，生命周期整个WebDriver

driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);