通过类对象引用时，无法通过系统属性配置Selenium浏览器驱动程序

Question

通过类对象引用时，无法通过系统属性配置Selenium浏览器驱动程序。

环境详情

Selenium：3.5.0

GeckoDriver：0.18.0

Mozilla Firefox：55.0.2

OS：Windows 8专业版

USECASE

当尝试通过类方法设置系统属性时，Selenium无法找到webdriver可执行文件并抛出java.lang.IllegalStateException，并显示错误消息：

The path to the driver executable must be set by the webdriver.gecko.driver system property; for more information, see https://github.com/mozilla/geckodriver. The latest version can be downloaded from https://github.com/mozilla/geckodriver/releases

代码块：

package demo;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class Q45756729_PageTitle 
{
    WebDriver driver;
    public void title()
    {
    System.setProperty("webdriver.firefox.driver","C:\\Utility\\BrowserDrivers\\geckodriver.exe");
    driver=new FirefoxDriver();
    driver.get("https://www.google.co.in");
    String titleofthepage=driver.getTitle();
    System.out.println(titleofthepage);
    }

    public static void main(String[] args) 
    {
        Q45756729_PageTitle obj1=new Q45756729_PageTitle();
        obj1.title(); 
    }
}

例外：

Exception in thread "main" java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.gecko.driver system property; for more information, see https://github.com/mozilla/geckodriver. The latest version can be downloaded from https://github.com/mozilla/geckodriver/releases
    at com.google.common.base.Preconditions.checkState(Preconditions.java:750)
    at org.openqa.selenium.remote.service.DriverService.findExecutable(DriverService.java:124)
    at org.openqa.selenium.firefox.GeckoDriverService.access$100(GeckoDriverService.java:41)
    at org.openqa.selenium.firefox.GeckoDriverService$Builder.findDefaultExecutable(GeckoDriverService.java:115)
    at org.openqa.selenium.remote.service.DriverService$Builder.build(DriverService.java:329)
    at org.openqa.selenium.firefox.FirefoxDriver.toExecutor(FirefoxDriver.java:207)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:103)
    at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:99)
    at demo.Q45756729_PageTitle.tite(Q45756729_PageTitle.java:12)
    at demo.Q45756729_PageTitle.main(Q45756729_PageTitle.java:21)

Answer 1

有时会发生这种情况：） -

替换此

System.setProperty("webdriver.firefox.driver","C:\\Utility\\BrowserDrivers\\geckodriver.exe");

与

System.setProperty("webdriver.gecko.driver","C:\\Utility\\BrowserDrivers\\geckodriver.exe");

希望这会有所帮助。感谢。

Answer 2

使用gecko.driver代替此Firefox.driver：

System.setProperty("webdriver.gecko.driver","E:/Gecko/geckodriver.exe");

Answer 3

System.setProperty("webdriver.firefox.driver","C:\\Utility\\BrowserDrivers\\geckodriver.exe");

需要替换为

System.setProperty("webdriver.gecko.driver","C:\\Utility\\BrowserDrivers\\geckodriver.exe");

因为驱动程序exe已由gecko代替，但是类名仍为FirefoxDriver。