selenium2java 遇到有三个窗口用例的处理办法

//登录下载精品资源
public static void downloadResources(WebDriver driver, boolean key) throws InterruptedException, AWTException {
if (key) {
loginWithTeacher(driver);
}else{
loginWithStudent(driver);
}
findElementByTextAndClick(driver, "精品资源");
String homehandle = driver.getWindowHandle();
findElementByXpathAndClick(driver, "html/body/div[3]/ul/li[4]/a");
Set<String> handles = driver.getWindowHandles();
for(String handle : handles){
if (handle.equals(homehandle)==false){
driver.switchTo().window(handle);
output("切换到精品资源页面了！");
Thread.sleep(2000);
findElementByXpathAndClick(driver, "html/body/div[5]/div[2]/div[1]/div[1]/dl/dd/a[4]");
findElementByXpathAndClick(driver, "html/body/div[5]/div[2]/div[1]/div[2]/dl/dd/a[3]");
findElementByXpathAndClick(driver, "html/body/div[5]/div[2]/div[1]/div[4]/dl/dd/a[3]");
Thread.sleep(2000);
String news = driver.getWindowHandle();
findElementByTextAndClick(driver, "点击下载");
Set<String> handlenews = driver.getWindowHandles();
for(String newsss : handlenews){
if(newsss.equals(news)==false && newsss.equals(homehandle) == false) {
driver.switchTo().window(newsss);
output("切换到资源页面了！");
findElementByXpathAndClick(driver, "html/body/div[3]/div[1]/div[2]/table/tbody/tr[3]/td[5]/a");
Thread.sleep(500);
driver.switchTo().alert().accept();
driver.close();
}
}
for(String newsss : handlenews){
if (newsss.equals(news)) {
driver.switchTo().window(newsss);
output("回到精品资源页面了！");
driver.close();
}
}
}
}
for(String handle : handles){
if (handle.equals(homehandle)){
driver.switchTo().window(handle);
output("回到首页了！");
Thread.sleep(2000);
driver.quit();
}
}
}