boolean flag;

		//点击次数

		int shcs=3;

		int i=0;

		 //窗口焦点控制

		 String detailWindowHandle = null;

		//火狐浏览器

		System.setProperty("webdriver.firefox.bin", "D:/Softwareinstallation/huohu/firefox.exe");

		WebDriver driver = new FirefoxDriver();

	    driver.get("http://www.baidu.com");

	    driver.manage().window().maximize();

	    //获取主窗口header信息

	    String mainWindowHandle=driver.getWindowHandle();

	    Thread.sleep(2000);

	    driver.findElement(By.id("kw")).sendKeys("17");

	    driver.findElement(By.id("su")).click();

	    Thread.sleep(3000);

	    flag=bmm.isElementExsit(driver, By.linkText("17XUEe游戏学院首页"));

	    System.out.println("flag="+flag);

	    while(!flag)

	    {

	    	System.out.println("ssssssss");

	    	driver.findElement(By.linkText("下一页>")).click();

	    	Thread.sleep(2000);

	    	flag=bmm.isElementExsit(driver, By.linkText("17XUEe游戏学院首页"));

	    	Thread.sleep(500);

	    }

	    while(i<shcs){

	   	     //点击游戏学院

		    driver.findElement(By.linkText("17XUEe游戏学院首页")).click();

		    //获取新窗口焦点 切换窗口

	   		Set<String> handles=driver.getWindowHandles();

	   		System.out.println(handles);

	   		Iterator<String> itWin=handles.iterator();

	   		while(itWin.hasNext()){

	   			String key=itWin.next();

	   			if(mainWindowHandle.equals(key)){

	   				continue;

	   			  }

	   			 detailWindowHandle=key;

	   		    }

	   	    WebDriver detailWindow = driver.switchTo().window(detailWindowHandle);

	   	    Thread.sleep(2000);

		    //关闭新打开的窗口

		     detailWindow.close();

		     handles.remove(detailWindowHandle);

		     Thread.sleep(2000);

		    //切换到主窗口

		    driver=driver.switchTo().window(mainWindowHandle);

		    i++;

		    System.out.println("点击第"+i+"次");

	    }

	    Thread.sleep(3000);

	    driver.close();

	    driver.quit();

	}

/**

	 * 验证元素是否存在

	 * */

	public boolean isElementExsit(WebDriver driver, By locator) {

         boolean flag = false;

         try {

             WebElement element=driver.findElement(locator);

             flag=null!=element;

         } catch (NoSuchElementException e) {

             System.out.println("Element:" + locator.toString()

                     + " is not exsit!");

             flag=false;

         }

         return flag;

     }

	 /**

	  * 页面截图,并保存到指定位置

	  * */

	 public  void pagePrintscreen(WebDriver driver,String paths){

		  File screenshotfile= ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);

		  try {

			FileUtils.copyFile(screenshotfile, new File(paths));

		} catch (IOException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

	 }