SeleniumWaiter:

import com.google.common.base.Function;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.ui.WebDriverWait;

public class SeleniumWaiter {

      private WebDriver driver;

      public SeleniumWaiter(WebDriver driver) {
           this.driver = driver;
      }

      public WebElement waitForMe(By locatorname, int timeout){
           WebDriverWait wait = new WebDriverWait(driver, timeout);
           return wait.until(SeleniumWaiter.presenceOfElementLocated(locatorname));
      }

      public static Function<WebDriver, WebElement> presenceOfElementLocated(final By locator) {
            // TODO Auto-generated method stub
            return new Function<WebDriver, WebElement>() {
                 @Override
                 public WebElement apply(WebDriver driver) {
                      return driver.findElement(locator);
                 }
            };
      }
 }

对你来说:

_waiter = new SeleniumWaiter(_driver);

try {
   _waiter.waitForMe(By.xpath("//..."), 10);
} 
catch (Exception e) {
   // Error
}

WebDriver driver = new ff / chrome / anyDriverYouWish(); .timeouts driver.manage()()。TimeUnit.SECONDS implicitlyWait(10日); 最多等待10秒。 WebDriverWait wait = new WebDriverWait(driver, 10); wait.until (ExpectedConditions。visibilityOf (WebElement元素)); FluentWait <司机> FluentWait; fluentWait = new fluentWait <>(driver)。TimeUnit.SECONDS withTimeout(30日) TimeUnit.MILLISECONDS .pollingEvery (200) . ignore (NoSuchElementException.class);

最后一个选项的优点是可以包含预期的异常，以便继续执行。

private static void checkPageIsReady(WebDriver driver) {
    JavascriptExecutor js = (JavascriptExecutor) driver;

    // Initially bellow given if condition will check ready state of page.
    if (js.executeScript("return document.readyState").toString().equals("complete")) {
        System.out.println("Page Is loaded.");
        return;
    }

    // This loop will rotate for 25 times to check If page Is ready after
    // every 1 second.
    // You can replace your value with 25 If you wants to Increase or
    // decrease wait time.
    for (int i = 0; i < 25; i++) {
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
        }
        // To check page ready state.
        if (js.executeScript("return document.readyState").toString().equals("complete")) {
            break;
        }
    }
}

对于隐式等待，你可以使用如下代码:

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

为了使网页等待一个特定的对象是可见的或某些条件是真实的。您可以使用网页驱动程序等羽。

//120 is maximum number of seconds to wait.
WebDriverWait wait = new WebDriverWait(driver,120);  
wait.until(ExpectedConditions.elementToBeClickable("CONDITITON"));

在Java中，另一种选择是让线程在特定的时间内休眠。

Thread.sleep(numberOfSeconds*1000); 
//This line will cause thread to sleep for seconds as variable

我创建了一个方法来简化线程。睡眠的方法

public static void wait_time(int seconds){
    try {
        Thread.sleep(seconds*1000);
        }catch (InterruptedException e) {
        // TODO Auto-generated catch block
            e.printStackTrace();
        }
}

使用wait_time(10)方法;线程将休眠10秒。

您还可以使用以下代码检查页面加载

IWait<IWebDriver> wait = new OpenQA.Selenium.Support.UI.WebDriverWait(driver, TimeSpan.FromSeconds(30.00));

 wait.Until(driver1 => ((IJavaScriptExecutor)driver).ExecuteScript("return document.readyState").Equals("complete"));

一般来说，使用Selenium 2.0时，web驱动程序应该只在确定页面已加载后才将控制权返回给调用代码。如果没有，您可以调用waitforeleement，它循环调用findelement，直到找到它或超时(可以设置超时)。