FluentWait类型不是通用的；不能使用参数< WebDriver>对其进行参数化.通过Selenium和Java的FluentWait类的错误 [英] The type FluentWait is not generic; it cannot be parameterized with arguments <WebDriver> error for FluentWait Class through Selenium and Java

问题描述

我正在使用Selenium Standalone Server 3.0.1.我试图在代码中添加Explicit Wait，以在元素可见时通过xpath检测元素.为了获得Java帮助，我寻找了Selenium Standalone Server 3.0.1的源代码，但找不到它.我在selenium-java-2.53.1版本中找到了源代码.我下载它并找到selenium-java-2.53.1-srcs，并将其添加到我的Eclipse IDE中.在FluentWait的帮助下，我只需将代码复制粘贴到Eclipse IDE中，然后更改变量名.

I am working with Selenium Standalone Server 3.0.1. I am trying to add an Explicit Wait to my code to detect an element through xpath when the element becomes visible. In order to get some Java help I looked out for the source code for Selenium Standalone Server 3.0.1 but was unable to find it. I found the source code in selenium-java-2.53.1 release. I downloaded it and found selenium-java-2.53.1-srcs and added to my Eclipse IDE. From the help of FluentWait, I simply copy pasted the code in my Eclipse IDE and changed the variable names.

文档中的示例代码如下:

The sample code in documentation is like:

   // 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"));
      }
    });

但是当我实现此代码时，只需复制粘贴即可:

But when I implement this code, simply copy pasting it:

       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类作为The type FluentWait is not generic; it cannot be parameterized with arguments <WebDriver>

这是我的进口货清单:

    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;

有人可以帮我吗?

添加了推荐答案

您需要在等待中指定期望的条件，以下是经过修改的代码，可以解决您的问题.

You need to specify expected condition inside the wait below is the modified code that could solve your problem.

代码:

import java.util.concurrent.TimeUnit;
import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.NoSuchElementException;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.FluentWait;
import org.openqa.selenium.support.ui.Wait;

public class DummyClass
{
    WebDriver driver;
    @Test
    public void test()
    {
        Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
            .withTimeout(30, TimeUnit.SECONDS)
            .pollingEvery(5, TimeUnit.SECONDS)
            .ignoring(NoSuchElementException.class);

        until(new Function<WebElement, Boolean>() 
        {
            public Boolean apply(WebElement element)
            {
                return element.getText().endsWith("04");
            }

            private void until(Function<WebElement, Boolean> function)
            {
                driver.findElement(By.linkText("Sample Post2"));
            }
        }
    }
}

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