为webdriver添加监听类，打印各种操作的日志，跟踪自动化过程

可以使用EventFiringWebDriver类创建对象，然后使用register(监听类对象)注册监听类。具体使用方法如下：

1 首先创建监听类，创建很简单，只要实现WebDriverEventListener接口即可，然后实现里面的方法

  1 public class MyWebDriverListener implements WebDriverEventListener {
  2 
  3     private Log log = new Log(MyWebDriverListener.class);
  4     
  5     @Override
  6     public void beforeNavigateTo(String url, WebDriver driver) {
  7         // TODO Auto-generated method stub
  8         
  9     }
 10 
 11     @Override
 12     public void afterNavigateTo(String url, WebDriver driver) {
 13         // TODO Auto-generated method stub
 14         log.debug("afterNavigateTo: "+url);
 15         log.debug("afterNavigateTo by driver: "+driver.getCurrentUrl());
 16         System.out.println("afterNavigateTo: "+url);
 17         System.out.println("afterNavigateTo by driver: "+driver.getCurrentUrl());
 18 
 19     }
 20 
 21     @Override
 22     public void beforeNavigateBack(WebDriver driver) {
 23         // TODO Auto-generated method stub
 24 
 25     }
 26 
 27     @Override
 28     public void afterNavigateBack(WebDriver driver) {
 29         // TODO Auto-generated method stub
 30 
 31     }
 32 
 33     @Override
 34     public void beforeNavigateForward(WebDriver driver) {
 35         // TODO Auto-generated method stub
 36 
 37     }
 38 
 39     @Override
 40     public void afterNavigateForward(WebDriver driver) {
 41         // TODO Auto-generated method stub
 42 
 43     }
 44 
 45     @Override
 46     public void beforeNavigateRefresh(WebDriver driver) {
 47         // TODO Auto-generated method stub
 48 
 49     }
 50 
 51     @Override
 52     public void afterNavigateRefresh(WebDriver driver) {
 53         // TODO Auto-generated method stub
 54 
 55     }
 56 
 57     @Override
 58     public void beforeFindBy(By by, WebElement element, WebDriver driver) {
 59         // TODO Auto-generated method stub
 60         log.debug("查找元素的条件是: "+ by.toString());
 61         System.out.println("查找元素的条件是: "+ by.toString());
 62 
 63     }
 64 
 65     @Override
 66     public void afterFindBy(By by, WebElement element, WebDriver driver) {
 67         // TODO Auto-generated method stub
 68     }
 69 
 70     @Override
 71     public void beforeClickOn(WebElement element, WebDriver driver) {
 72         // TODO Auto-generated method stub
 73         System.out.println("单机页面元素的属性: "+element.getAttribute("value"));
 74 
 75     }
 76 
 77     @Override
 78     public void afterClickOn(WebElement element, WebDriver driver) {
 79         // TODO Auto-generated method stub
 80 
 81     }
 82 
 83     @Override
 84     public void beforeChangeValueOf(WebElement element, WebDriver driver) {
 85         // TODO Auto-generated method stub
 86 
 87     }
 88 
 89     @Override
 90     public void afterChangeValueOf(WebElement element, WebDriver driver) {
 91         // TODO Auto-generated method stub
 92 
 93     }
 94 
 95     @Override
 96     public void beforeScript(String script, WebDriver driver) {
 97         // TODO Auto-generated method stub
 98 
 99     }
100 
101     @Override
102     public void afterScript(String script, WebDriver driver) {
103         // TODO Auto-generated method stub
104 
105     }
106 
107     @Override
108     public void onException(Throwable throwable, WebDriver driver) {
109         // TODO Auto-generated method stub
110         SimpleDateFormat format = new SimpleDateFormat("yyyy_MM_dd_HH_mm_ss");
111         String dateString = format.format(new Date());
112 
113         File srcFile = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
114 
115         try{
116             File screenShot = new File("D:\"+dateString+".png");
117             FileUtils.copyFile(srcFile, screenShot);
118         }catch(Exception e){
119             e.printStackTrace();
120         }
121         
122         log.error("发生异常,原因是: "+throwable.getMessage());
123         //后期可以替换为log4j
124         System.out.println("发生异常,原因是: "+throwable.getMessage());
125         
126         log.error("截图保存在: "+"D:\"+dateString+".png");
127         //后期保存路径读取properties配置文件
128         System.out.println("截图保存在: "+"D:\"+dateString+".png");
129     }
130 
131 }

2 初始化EventFiringWebDriver对象

ChromeDriver chromedriver = new ChromeDriver();

EventFiringWebDriver eventdriver = new EventFiringWebDriver(chromedriver);

//为eventdriver添加监听类MyWebDriverListener
eventdriver.register(new MyWebDriverListener());

注册后，后续使用chromedriver进行各种操作（监听类中实现的各种方法）后，可进行打印日志等处理，EventFiringWebDriver通过动态代理，在调用webDriver的各种方法的前后添加处理操作。

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