无法使用selenium和java获取页面中所有下拉框的位置

import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;

public class DropdownLocator {
    public static void main(String[] args) {
        WebDriver driver = new ChromeDriver();
        driver.get("https://example.com");

        // 使用JavaScript执行获取下拉框位置的操作
        JavascriptExecutor jsExecutor = (JavascriptExecutor) driver;
        List<WebElement> dropdowns = (List<WebElement>) jsExecutor.executeScript(
                "var dropdowns = document.getElementsByTagName('select');" +
                "var positions = [];" +
                "for (var i = 0; i < dropdowns.length; i++) {" +
                "    var rect = dropdowns[i].getBoundingClientRect();" +
                "    positions.push({ 'x': rect.left, 'y': rect.top });" +
                "}" +
                "return positions;");

        // 打印下拉框的位置信息
        for (WebElement dropdown : dropdowns) {
            System.out.println("下拉框位置：(" + dropdown.getLocation().getX() + ", " + dropdown.getLocation().getY() + ")");
        }

        driver.quit();
    }
}