如何处理alert、confirm、prompt对话框

import java.io.File;

import org.openqa.selenium.Alert;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;

/*
 * 如何处理alert、confirm、prompt对话框 
 */
public class DialogsTest {

    public static void main(String[] args) {
        WebDriver dr = new ChromeDriver();
        File file = new File("learning/Dialogs.html");
        String filePath = "file:///" + file.getAbsolutePath();
        System.out.println("filePath: " + filePath);
        
        dr.get(filePath);
        dr.findElement(By.id("alert")).click();
        Alert alert = dr.switchTo().alert();
        String alertText = alert.getText();
        System.out.println("alert text: " + alertText);
        
        // 点击弹出对话框的叉掉按钮
        alert.dismiss();
        
        dr.findElement(By.id("confirm")).click();
        Alert confirm = dr.switchTo().alert();
        String confirmText = confirm.getText();
        System.out.println("confirm text: " + confirmText);
        
        // 点击弹出对话框的确定按钮
        confirm.accept();
        
        dr.findElement(By.id("prompt")).click();
        Alert prompt = dr.switchTo().alert();
        String promptText = prompt.getText();
        System.out.println("prompt text: " +  promptText);
        prompt.sendKeys("tester...");
        prompt.accept();
        
        dr.quit();
    }

}