Selenium webdriver SeleniumWebDriver给了我google chrome的空白屏幕和Java空指针异常。有人能建议吗？

TestBase，其中包含引发问题的初始化方法：

package TestBase;

    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.util.Properties;
    import java.util.concurrent.TimeUnit;

    import org.openqa.selenium.WebDriver;
    import org.openqa.selenium.chrome.ChromeDriver;
    import org.openqa.selenium.firefox.FirefoxDriver;
    import org.openqa.selenium.support.events.EventFiringWebDriver;

    public class testBasesetup {
        public static Properties prop;
        public static WebDriver driver;
        public static testBasesetup testBaseObj;
        public  static EventFiringWebDriver e_driver;

        public testBasesetup() throws Exception 
        {   
            try {
                prop = new Properties();
                File src = new File("C:\\Users\\LENOVO\\eclipse-workspace\\Demon\\src\\main\\java\\Config\\config.properties");
                FileInputStream ip = new FileInputStream(src) ;

                prop.load(ip);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        public static void initialization() throws Exception 
        {
            String browsername = prop.getProperty("browser");
            if(browsername.equals("chrome")) 
            {
                System.setProperty("webdriver.chrome.driver", "F:\\Eclipse\\chromedriver.exe");
                WebDriver driver = new ChromeDriver();

            }
            else if(browsername.equals("firefox"))
            {
                System.setProperty("webdriver.gecko.driver", "F:\\Eclipse\\browser\\geckodriver.exe");
                WebDriver driver = new FirefoxDriver();
            }   

            driver.manage().window().maximize();
            driver.manage().deleteAllCookies();
            driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);
            driver.manage().timeouts().pageLoadTimeout(30, TimeUnit.SECONDS);

            String URLtoTest = prop.getProperty("URL");
            Thread.sleep(1000);
        }

    }

我正在运行的测试类，这会产生问题。我猜驱动变量存在一些问题，但不知道错误：

    package PageTest;

    import org.testng.annotations.AfterMethod;
    import org.testng.annotations.AfterTest;
    import org.testng.annotations.BeforeMethod;
    import org.testng.annotations.BeforeTest;
    import org.testng.annotations.Test;

    import Pages.LoginPage;
    import TestBase.testBasesetup;

    public class LoginPageTest extends testBasesetup{
        LoginPage LoginPageObj;
        testBasesetup testBaseObj;
        public LoginPageTest() throws Exception 
        {
            super();
        }

        @BeforeMethod
        public void setup() throws Exception 
        {
            initialization();
            LoginPageObj = new LoginPage();
            Thread.sleep(2000);
        }

        @Test()
        public void LoginCheck() throws Exception 
        {
            LoginPageObj.login("first.customer@kkr.com","Potatok");
        }


        @AfterMethod
        public void tearDown() 
        {
            driver.quit();
        }
    }

错误图像：

---

您的WebDriver静态实例仍处于未初始化状态。在initialization（）方法中，您需要初始化静态实例，而不是本地驱动程序实例。如下图所示：

public class testBasesetup {
        public static Properties prop;
        public static WebDriver driver;
        public static testBasesetup testBaseObj;
        public  static EventFiringWebDriver e_driver;

        public testBasesetup() throws Exception 
        {   
            try {
                prop = new Properties();
                File src = new File("C:\\Users\\LENOVO\\eclipse-workspace\\Demon\\src\\main\\java\\Config\\config.properties");
                FileInputStream ip = new FileInputStream(src) ;

                prop.load(ip);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        public static void initialization() throws Exception 
        {
            String browsername = prop.getProperty("browser");
            if(browsername.equals("chrome")) 
            {
                System.setProperty("webdriver.chrome.driver", "F:\\Eclipse\\chromedriver.exe");
                **driver = new ChromeDriver();**

            }
            else if(browsername.equals("firefox"))
            {
                System.setProperty("webdriver.gecko.driver", "F:\\Eclipse\\browser\\geckodriver.exe");
                **driver = new FirefoxDriver();**
            }   

            driver.manage().window().maximize();
            driver.manage().deleteAllCookies();
            driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);
            driver.manage().timeouts().pageLoadTimeout(30, TimeUnit.SECONDS);

            String URLtoTest = prop.getProperty("URL");
            Thread.sleep(1000);
        }

    }

---

这回答了你的问题吗？