前提:
1、电脑安装了谷歌浏览器
2、下载chromedriver-win64,放到C:\Program Files\Google\Chrome\chromedriver-win64 安装路径
chromedriver-win64 下载地址:Chrome for Testing availability
3、
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.chrome.ChromeDriver; import org.openqa.selenium.chrome.ChromeOptions; import java.io.File; import java.io.IOException; public class Test { public static void main(String[] args) throws InterruptedException, IOException { WebDriver driver = null; try{ System.setProperty("webdriver.chrome.driver", "C:\\Program Files\\Google\\Chrome\\chromedriver-win64\\chromedriver.exe"); ChromeOptions options = new ChromeOptions(); options.addArguments("--headless"); // 无界面模式 options.addArguments("--hide-scrollbars"); // 隐藏滚动条(可选) options.addArguments("--force-device-scale-factor=2"); // 设置缩放因子为 2,提高清晰度 driver = new ChromeDriver(options); driver.get("https://www.baidu.com/"); // 替换为你想截图的网页 Thread.sleep(20000); File screenshot = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE); File imageFile = new File("D:\\笔记\\test.png"); FileUtils.copyFile(screenshot, imageFile); // 保存截图 }finally { if(driver != null){ driver.quit(); } } } }
效果图(会看到看到明显截图是不全的。)是因为设置了缩放因子,提高清晰度导致的
如何处理这种情况呢。
A、添加一个模拟滚动调整
/** * 模拟滚动条 * @param driver * @throws InterruptedException */ public static void analogScrollBar(WebDriver driver) throws InterruptedException { // 模拟滚动条,解决懒加载问题 String jsHeight = "return document.body.clientHeight"; long heightIndex = (long) ((JavascriptExecutor) driver).executeScript(jsHeight); long k = 1; // 模拟手动滚动条 while (k * 500 < heightIndex) { String jsMove = "window.scrollTo(0, " + (k * 500) + ")"; System.out.println(jsMove); ((JavascriptExecutor) driver).executeScript(jsMove); Thread.sleep(200); heightIndex = (long) ((JavascriptExecutor) driver).executeScript(jsHeight); k++; } // 获取网页的宽度和高度 String jsWidth = "return Math.max(document.body.scrollWidth, document.body.offsetWidth, document.documentElement.clientWidth, document.documentElement.scrollWidth, document.documentElement.offsetWidth);"; String jsHeightFull = "return Math.max(document.body.scrollHeight, document.body.offsetHeight, document.documentElement.clientHeight, document.documentElement.scrollHeight, document.documentElement.offsetHeight);"; long widthIndex = (long) ((JavascriptExecutor) driver).executeScript(jsWidth); heightIndex = (long) ((JavascriptExecutor) driver).executeScript(jsHeightFull); System.out.println("Width: " + widthIndex + ", Height: " + heightIndex); // 设置浏览器窗口大小 driver.manage().window().setSize(new Dimension((int) widthIndex + 100, (int) heightIndex + 500)); }
效果图:
B、去掉缩放因子(A方式比较,这样截出来的图片会更加清晰)
标签:heightIndex,截图,driver,抓取,long,chromedriver,import,document From: https://www.cnblogs.com/wwssgg/p/18533076