返回空指针异常- Java Selenium Webdriver

WebDriver driver = new ChromeDriver();
driver.get("https://example.com");
WebElement element = driver.findElement(By.id("nonExistentId")); // 元素不存在
element.click(); // 抛出空指针异常

WebDriver driver = new ChromeDriver();
driver.get("https://example.com");
try {
    WebElement element = driver.findElement(By.id("nonExistentId"));
    element.click();
} catch (NoSuchElementException e) {
    System.out.println("元素未找到");
}

WebDriver driver = new ChromeDriver();
driver.get("https://example.com");
WebElement element = driver.findElement(By.id("elementId")); // 页面未完全加载
element.click(); // 抛出空指针异常

WebDriver driver = new ChromeDriver();
driver.get("https://example.com");
WebDriverWait wait = new WebDriverWait(driver, 10);
WebElement element = wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("elementId")));
element.click();

WebDriver driver; // 未初始化
driver.get("https://example.com"); // 抛出空指针异常

WebDriver driver = new ChromeDriver(); // 正确初始化
driver.get("https://example.com");