C#

using System;
using OpenQA.Selenium.PhantomJS;
using System.Drawing.Imaging;

namespace example.com
{
    class Program
    {
        public static PhantomJSDriver driver;

        public static void Main(string[] args)
        {
            driver = new PhantomJSDriver();
            driver.Manage().Window.Size = new System.Drawing.Size(1280, 1024);
            driver.Navigate().GoToUrl("http://www.example.com/");
            driver.GetScreenshot().SaveAsFile("screenshot.png", ImageFormat.Png);
            driver.Quit();
        }
    }
}

它需要NuGet包:

PhantomJS 2.0.0 硒。支持2.48.2 硒。WebDriver 2.48.2

它是用。net Framework v4.5.2测试的。

Python

每个WebDriver都有一个. save_截图(filename)方法。所以对于Firefox，它可以这样使用:

from selenium import webdriver

browser = webdriver.Firefox()
browser.get('http://www.google.com/')
browser.save_screenshot('screenie.png')

令人困惑的是，.get_screenshot_as_file(filename)方法也存在，它做同样的事情。

还有一些方法:.get_screenshot_as_base64()(用于嵌入HTML)和.get_screenshot_as_png()(用于检索二进制数据)。

注意，WebElements有一个.截图()方法，它的工作原理类似，但只捕获所选元素。

Ruby

require 'rubygems'
require 'selenium-webdriver'

driver = Selenium::WebDriver.for :ie
driver.get "https://www.google.com"
driver.save_screenshot("./screen.png")

更多的文件类型和选项可用，您可以在文件takes_screenshot.rb中看到它们。

/**
 * Take a screenshot and move to the given folder location.
 *
 * @param driver
 * @param folderLocation
 * @return screenShotFilePath
 */
public static String captureScreenshot(WebDriver driver, String folderLocation) {

    // Variable to store screenshot's file path.
    String screenShotFilePath = null;

    // Generate unique id for screen shot name.
    String uniqueId = UUID.randomUUID().toString().substring(31);

    if (driver != null) {

        // Generate screenshot as a file
        File scrFile = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);

        // New screenshot file path with having file name
        screenShotFilePath = folderLocation + File.separator + uniqueId + ".png";

        // Move file to the destination location.
        FileUtils.moveFile(scrFile, new File(screenShotFilePath));
    }

    return screenShotFilePath;
}

是的，可以通过Selenium WebDriver来截屏。我目前使用Chrome驱动来抓取网站图片。请参考以下方法captureScreenshot()。

您还可以添加对web驱动程序的限制，例如

使用无头版的网页浏览器 当页面加载时禁用通知 启动全屏等。

如果一个网站配备了警报框，你的网页驱动程序将无法捕捉屏幕截图，因为异常将被抛出。在这种情况下，你需要关闭警告框，然后获取截图。下面的代码片段关闭警报框。

    public void captureScreenshot() throws InterruptedException, IOException {

        System.out.println("Creating Chrome Driver");

        // Set Chrome Driver
        System.setProperty("webdriver.chrome.driver", "D:\\chromedriver.exe");

        // Add arguments to Chrome Options
        ChromeOptions chromeOptions = new ChromeOptions();
        chromeOptions.addArguments("--headless");
        chromeOptions.addArguments("start-maximized");
        chromeOptions.addArguments("--disable-gpu");
        chromeOptions.addArguments("--start-fullscreen");
        chromeOptions.addArguments("--disable-extensions");
        chromeOptions.addArguments("--disable-popup-blocking");
        chromeOptions.addArguments("--disable-notifications");
        chromeOptions.addArguments("--window-size=1920,1080");
        chromeOptions.addArguments("--no-sandbox");
        chromeOptions.addArguments("--dns-prefetch-disable");
        chromeOptions.addArguments("enable-automation");
        chromeOptions.addArguments("disable-features=NetworkService");

        WebDriver driver = new ChromeDriver(chromeOptions);
        driver.get("https://www.google.com");
        System.out.println("Wait a bit for the page to render");
        TimeUnit.SECONDS.sleep(5);
        System.out.println("Taking Screenshot");
        File outputFile = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
        String imageDetails = "D:\\Images";
        File screenShot = new File(imageDetails).getAbsoluteFile();
        FileUtils.copyFile(outputFile, screenShot);
        System.out.println("Screenshot saved: {}" + imageDetails);
    }
}

为了接受警报框和获取截图:

String alertText = alert.getText();
System.out.println("ERROR: (ALERT BOX DETECTED) - ALERT MSG : " + alertText);
alert.accept();
File outputFile = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
String imageDetails = "D://Images"
File screenShot = new File(imageDetails).getAbsoluteFile();
FileUtils.copyFile(outputFile, screenShot);
System.out.println("Screenshot saved: {}" + imageDetails);
driver.close();

Java

我解决了这个问题。你可以扩展RemoteWebDriver，给它所有的接口，它的代理驱动程序实现:

WebDriver augmentedDriver = new Augmenter().augment(driver);
((TakesScreenshot)augmentedDriver).getScreenshotAs(...); // It works this way