java - FluentWait 类型不是通用的；无法通过 Selenium 和 Java 使用 FluentWait 类的参数 <WebDriver> 错误进行参数化

Question

我正在与 Selenium Standalone Server 3.0.1 合作。我正在尝试添加 Explicit Wait我的代码在元素变得可见时通过 xpath 检测该元素。为了获得一些 Java 帮助，我查找了 Selenium Standalone Server 3.0.1 的源代码但无法找到它。我在selenium-java-2.53.1找到了源代码发布。我下载了，发现selenium-java-2.53.1-srcs并添加到我的 Eclipse IDE 。来自FluentWait的帮助，我只需将代码复制粘贴到我的 Eclipse IDE 中并更改了变量名称。

文档中的示例代码如下:

   // 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"));
      }
    });

但是当我实现这段代码时，只需复制粘贴它:

       Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
           .withTimeout(30, TimeUnit.SECONDS)
           .pollingEvery(5, TimeUnit.SECONDS)
           .ignoring(NoSuchElementException.class);

       WebElement element = wait.until(new Function<WebDriver, WebElement>()        {
         public WebElement apply(WebDriver driver) {
           return driver.findElement(By.xpath("//p[text()='WebDriver']"));
         }
       });

我在 FluentWait 上收到错误类为The type FluentWait is not generic; it cannot be parameterized with arguments <WebDriver>

这是我的导入列表:

    import java.util.concurrent.TimeUnit;
    import org.apache.log4j.Logger;
    import org.apache.log4j.PropertyConfigurator;
    import org.openqa.selenium.By;
    import org.openqa.selenium.NoSuchElementException;
    import org.openqa.selenium.WebDriver;
    import org.openqa.selenium.WebElement;
    import org.openqa.selenium.chrome.ChromeDriver;
    import org.openqa.selenium.support.ui.Wait;
    import com.google.common.base.Function;

谁能帮帮我吗？

<小时/>

更新

添加了answer关于 Selenium v​​3.11.0

中 FluentWait 的修改构造函数

Answer 1

随着Selenium v​​3.11.0的可用性，FluentWait的构造函数已改变。现在 withTimeout 和 pollingEvery 的参数类型是 Duration 。这是修改后的实现:

import java.time.Duration;

import org.openqa.selenium.By;
import org.openqa.selenium.NoSuchElementException;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.ui.FluentWait;
import org.openqa.selenium.support.ui.Wait;

import com.google.common.base.Function;

public class Fluent_Wait {

    public static void main(String[] args) {


        System.setProperty("webdriver.gecko.driver", "C:\\Utility\\BrowserDrivers\\geckodriver.exe");
        WebDriver driver = new FirefoxDriver();
            driver.get("https://www.google.com");
            // Waiting 30 seconds for an element to be present on the page, checking
            // for its presence once every 500 milliseconds.
            Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
            .withTimeout(Duration.ofSeconds(30))
            .pollingEvery(Duration.ofMillis(500))
            .ignoring(NoSuchElementException.class);

            WebElement foo = wait.until(new Function<WebDriver, WebElement>() {
            public WebElement apply(WebDriver driver) {
                return driver.findElement(By.name("q"));
            }
        });

    }

}