java - Selenium 网络驱动程序 : List is not generic; it cannot be parameterized with arguments `` type

Question

我试图将链接存储在列表中，请遵循以下代码

public class frameswitch {

public static void main(String[] args) {

    System.setProperty("webdriver.gecko.driver","C:\\geckodriver\\geckodriver.exe");  
    WebDriver driver=new FirefoxDriver();
    String baseUrl="https://www.udacity.com/";
    driver.get(baseUrl);
    String Title="Udacity - Free Online Courses and Nanodegree Programs";
    List<WebElement> linkElements = driver.findElements(By.tagName("a"));
    }
}

但在使用列表时遇到错误

The type List is not generic; it cannot be parameterized with arguments <WebElement> type

Answer 1

这是您问题的答案:

错误说明了一切The type List is not generic; it cannot be parameterized with arguments <WebElement> type .这意味着当您配置​​ List如 List<WebElement> linkElements ，你不小心从 java.awt.List 导入了它未定义的地方。因此错误。

下面的截图展示了这一切:

解决方案:

作为解决方案，我使用了您自己的代码导入 java.util.List而不是 java.awt.List并且您的代码块工作正常:

package demo;

import java.util.List;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;

public class Q45402867_tagname_a {

    public static void main(String[] args) {
        System.setProperty("webdriver.gecko.driver","C:\\Utility\\BrowserDrivers\\geckodriver.exe");  
        WebDriver driver=new FirefoxDriver();
        String baseUrl="https://www.udacity.com/";
        driver.get(baseUrl);
        String Title="Udacity - Free Online Courses and Nanodegree Programs";
        List<WebElement> linkElements = driver.findElements(By.tagName("a"));
        System.out.println(linkElements.size());
        for (WebElement ele:linkElements)
        System.out.println(ele);
    }

}

控制台的输出是:

86
[[FirefoxDriver: firefox on ANY (ef81931f-9530-4998-8405-6581ab51c86e)] -> tag name: a]
...  84 more ...
[[FirefoxDriver: firefox on ANY (ef81931f-9530-4998-8405-6581ab51c86e)] -> tag name: a]

如果这回答了您的问题，请告诉我。