使用selenium监听每一步操作

1.创建类LogEventListener.java, 如下：

package com.demo;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.events.WebDriverEventListener;


/**
 * 用一个类扩展web driver自带的事件监听器，可以实现许多有趣的功能。
 * 比如自动log
 * a customer event listener
 */
public  class LogEventListener implements WebDriverEventListener {
	
	public void beforeNavigateTo(String url, WebDriver driver) {
		System.out.println("转向前URL: '" + url + "'");
	}

	public void afterNavigateTo(String url, WebDriver driver) {
		System.out.println("转向后URL:'" + url + "'");
	}

	public void beforeChangeValueOf(WebElement element, WebDriver driver) {
		System.out.println("Value of the:" + element.toString()
				+ " before any changes made");
	}

	public void afterChangeValueOf(WebElement element, WebDriver driver) {
		System.out.println("Element value changed to: " + element.toString());
	}

	public void beforeClickOn(WebElement element, WebDriver driver) {
		System.out.println("试图单击对象: " + element.toString());
	}

	public void afterClickOn(WebElement element, WebDriver driver) {
		System.out.println("单击对象: " + element.toString());
	}

	public void beforeNavigateBack(WebDriver driver) {
		System.out.println("Navigating back to previous page");
	}

	public void afterNavigateBack(WebDriver driver) {
		System.out.println("Navigated back to previous page");
	}

	public void beforeNavigateForward(WebDriver driver) {
		System.out.println("Navigating forward to next page");
	}

	public void afterNavigateForward(WebDriver driver) {
		System.out.println("Navigated forward to next page");
	}

	public void onException(Throwable error, WebDriver driver) {
		System.out.println("Exception occured: " + error);
	}

	public void beforeFindBy(By by, WebElement element, WebDriver driver) {
		System.out.println("试图寻找对象 : " + by.toString());
	}

	public void afterFindBy(By by, WebElement element, WebDriver driver) {
		System.out.println("找到对象 : " + by.toString());
	}

	/*
	 * non overridden methods of WebListener class
	 */
	public void beforeScript(String script, WebDriver driver) {
	}

	public void afterScript(String script, WebDriver driver) {
	}

	@Override
	public void afterChangeValueOf(WebElement arg0, WebDriver arg1, CharSequence[] arg2) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void afterNavigateRefresh(WebDriver arg0) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void beforeChangeValueOf(WebElement arg0, WebDriver arg1, CharSequence[] arg2) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void beforeNavigateRefresh(WebDriver arg0) {
		// TODO Auto-generated method stub
		
	}
	 	
}

2.在创建WebEventListener监听类，如下：

package com.demo;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.events.AbstractWebDriverEventListener;

public class WebEventListener extends AbstractWebDriverEventListener {

	public void beforeNavigateTo(String url, WebDriver driver) {
		System.out.println("打开前url: '" + url + "'");
	}

	public void afterNavigateTo(String url, WebDriver driver) {
		System.out.println("打开url:'" + url + "'");
	}

	public void beforeClickOn(WebElement element, WebDriver driver) {
		System.out.println("试图单击对象: " + element.toString());
	}

	public void afterClickOn(WebElement element, WebDriver driver) {
		System.out.println("单击对象: " + element.toString());
	}

	public void onException(Throwable error, WebDriver driver) {
		System.out.println("Error occurred: " + error);
	}
}

 3.使用监听，如下：

package com.demo;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.events.EventFiringWebDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import org.testng.Assert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

public class ListenerTest {
	
	private WebDriver driver;
	private EventFiringWebDriver e_driver;
	private WebEventListener eventListener;
	private WebDriverWait wait;
	private String appURL = "http://www.google.com";
	public int waitTime = 10;
	private String headerText = "One account. All of Google.";
	private String errMessage = "The email and password you entered don't match.";

	@BeforeClass()
	public void setUp() {

		driver = new FirefoxDriver();
		wait = new WebDriverWait(driver, waitTime);

		e_driver = new EventFiringWebDriver(driver);

		eventListener = new WebEventListener();
		e_driver.register(eventListener);
	
		e_driver.manage().window().maximize();
		e_driver.get(appURL);
	}

	@Test
	public void testEventsONE() {
		System.out.println("***** Executing Test ONE ***** ");
		e_driver.findElement(By.linkText("Gmail")).click();
		String pageHeaderText = e_driver.findElement(By.tagName("h1")).getText();
		Assert.assertTrue(pageHeaderText.equalsIgnoreCase(headerText));
	}

	@Test
	public void testEventsTWO()  {
		System.out.println("***** Executing Test Two ***** ");
		e_driver.findElement(By.id("Email")).sendKeys("username");
		e_driver.findElement(By.id("next")).click();
		
		wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("Passwd")));
		e_driver.findElement(By.id("Passwd")).sendKeys("password");
		e_driver.findElement(By.id("signIn")).click();
		
		String pageHeaderText = e_driver.findElement(By.id("errormsg_0_Passwd")).getText();
		Assert.assertTrue(pageHeaderText.equalsIgnoreCase(errMessage));
	}

	@AfterClass()
	public void tearDown() {
		if (e_driver != null) {
			e_driver.quit();
		}
	}


}

运行查看控制台打印的信息