在Webdriver中提交表单后,如何等待页面加载.我正在使用firefox驱动程序

/**
 * An implementation of the {@link Wait} interface that may have its timeout
 * and polling interval configured on the fly.
 *
 * <p>Each FluentWait instance defines the maximum amount of time to wait for
 * a condition,as well as the frequency with which to check the condition.
 * Furthermore,the user may configure the wait to ignore specific types of
 * exceptions whilst waiTing,such as
 * {@link org.openqa.SELEnium.NoSucHelementexception NoSucHelementexceptions}
 * when searching for an element on the page.
 *
 * <p>Sample usage:
 * <code><pre>
 *   // WaiTing 30 seconds for an element to be present on the page,checking
 *   // for its presence once every 5 seconds.
 *   Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
 *       .withTimeout(30,SECONDS)
 *       .pollingEvery(5,SECONDS)
 *       .ignoring(NoSucHelementexception.class);
 *
 *   WebElement foo = wait.until(new Function<WebDriver,WebElement>() {
 *     public WebElement apply(WebDriver driver) {
 *       return driver.findElement(By.id("foo"));
 *     }
 *   });
 *

或WebDriverWait.