selenium webdriver学习 12 – 如何利用selenium-webdriver截图

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.FileUtils;
import org.openqa.selenium.OutputType;
import org.openqa.selenium.TakesScreenshot;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
public class ShotScreen {

/**
* @author gongjf
* @throws IOException
* @throws InterruptedException
*/
publicstaticvoid main(String[] args)throws IOException, InterruptedException {

System.setProperty("webdriver.firefox.bin","D:\\Program Files\\Mozilla Firefox\\firefox.exe");
WebDriver dr = new FirefoxDriver();
dr.get("http://www.51.com");

//这里等待页面加载完成
Thread.sleep(5000);
//下面代码是得到截图并保存在D盘下
File screenShotFile = ((TakesScreenshot)dr).getScreenshotAs(OutputType.FILE);
FileUtils.copyFile(screenShotFile,new File("D:/test.png"));}}


看了一下OutputType接口和TakesScreenshot接口，吐槽一下，貌似这两个接口不是同一个开发写的或者注释没有更新怎么的。在OutputType里面的注释说：
/**
* Defines the output type for a screenshot. See org.openqa.selenium.Screenshot for usage and
* examples.
... 

然后在那找了半天的org.openqa.selenium.Screenshot 接口，晕，后来想应该是org.openqa.selenium.TakesScreenshot。
在TakesScreenshot里有如下注释：
 /**
* Capture the screenshot and store it in the specified location.
*
* <p>For WebDriver extending TakesScreenshot, this makes a best effort
* depending on the browser to return the following in order of preference:
* <ul>
*   <li>Entire page</li>
*   <li>Current window</li>
*   <li>Visible portion of the current frame</li>
*   <li>The screenshot of the entire display containing the browser</li>
* </ul>
*
* <p><span style="color: rgb(255, 0, 0);">For WebElement extending TakesScreenshot, this makes a best effort
* depending on the browser to return the following in order of preference:
*   - The entire content of the HTML element
*   - The visisble portion of the HTML element</span>
*
* @param <X> Return type for getScreenshotAs.
* @param target target type, @see OutputType
* @return Object in which is stored information about the screenshot.
* @throws WebDriverException on failure.
*/