我想点击这个页面的打印按钮:
然后保存PDF...
这是点击按钮的代码:
String url = "https://www.google.com/maps/dir/40.4515849,-3.6903752/41.380896,2.1228198/@40.4515849,-3.6903752/am=t/?hl=en";
WebDriver driver = new HtmlUnitDriver();
driver.get(url);
System.out.println(driver.getTitle());
System.out.println(driver.getCurrentUrl());
WebElement element = driver.findElement(By.xpath("//*[@id=\"text-mode-options-header\"]/div/div/div[2]/div[2]/div/button[1]"));
element.click();
System.out.println("Page title is: " + driver.getTitle());
driver.quit();
但我收到以下错误:
Exception in thread "main" org.openqa.selenium.NoSuchElementException: Unable to locate a node using //*[@id="text-mode-options-header"]/div/div/div[2]/div[2]/div/button[1]
For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html
Build info: version: '2.43.1', revision: '5163bce', time: '2014-09-10 16:27:58'
Driver info: driver.version: HtmlUnitDriver
at org.openqa.selenium.htmlunit.HtmlUnitDriver.findElementByXPath(HtmlUnitDriver.java:1057)
at org.openqa.selenium.By$ByXPath.findElement(By.java:357)
at org.openqa.selenium.htmlunit.HtmlUnitDriver$5.call(HtmlUnitDriver.java:1575)
at org.openqa.selenium.htmlunit.HtmlUnitDriver$5.call(HtmlUnitDriver.java:1)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.implicitlyWaitFor(HtmlUnitDriver.java:1251)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.findElement(HtmlUnitDriver.java:1572)
at org.openqa.selenium.htmlunit.HtmlUnitDriver.findElement(HtmlUnitDriver.java:532)
at com.controlstation.start.Main.main(Main.java:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
我如何使用 Selenium 做到这一点?还有别的办法吗?谢谢。
编辑:
最佳答案
这是我的见解。
首先,您需要等待页面加载才能与 Print
按钮进行交互。最好的方法是使用内置机制:selenium waits - 等待 Print
按钮可点击:
// open print dropdown
WebDriverWait wait = new WebDriverWait(driver, 10);
wait.until(ExpectedConditions.elementToBeClickable(By.cssSelector("button.print-button"))).click();
// click print button
WebElement printButton = driver.findElement(By.cssSelector("button.print-popup-button"));
printButton.click();
好的,如果您使用 ChromeDriver
运行它:
package com.company;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
public class Main {
public static void main(String[] args) {
String url = "https://www.google.com/maps/dir/40.4515849,-3.6903752/41.380896,2.1228198/@40.4515849,-3.6903752/am=t/?hl=en";
WebDriver driver = new ChromeDriver();
driver.get(url);
// open print dropdown
WebDriverWait wait = new WebDriverWait(driver, 10);
wait.until(ExpectedConditions.elementToBeClickable(By.cssSelector("button.print-button"))).click();
// click print button
WebElement printButton = driver.findElement(By.cssSelector("button.print-popup-button"));
printButton.click();
// now what?
}
}
您将看到 Chrome 打印预览 对话框,不幸的是,它超出了 selenium 的范围:
但是,有希望,如果你检查可用Chrome arguments , 你会看到有相关的:
--disable-print-preview - Disables print preview (For testing, and for users who don't like us. :[ )
好吧,让我们试试看:
ChromeOptions options = new ChromeOptions();
options.addArguments("--disable-print-preview");
WebDriver driver = new ChromeDriver(options);
driver.get(url);
现在,显示了一个系统打印对话框:
Selenium 也无法控制它。所以,不,没有希望。哦,等等!
好的,如果我们超出了 selenium 的范围,让我们使用可以帮助我们单击对话框中的 Print
按钮的工具 - Robot
类:
This class is used to generate native system input events for the purposes of test automation, self-running demos, and other applications where control of the mouse and keyboard is needed.
我们将初始化 Robot
并在打印对话框出现时发送 Enter
键:
package com.company;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import java.awt.*;
import java.awt.event.KeyEvent;
public class Main {
public static void main(String[] args) throws AWTException, InterruptedException {
String url = "https://www.google.com/maps/dir/40.4515849,-3.6903752/41.380896,2.1228198/@40.4515849,-3.6903752/am=t/?hl=en";
Robot r = new Robot();
r.delay(1000);
WebDriver driver = new ChromeDriver();
driver.get(url);
// open print dropdown
WebDriverWait wait = new WebDriverWait(driver, 10);
wait.until(ExpectedConditions.elementToBeClickable(By.cssSelector("button.print-button"))).click();
// click print button
WebElement printButton = driver.findElement(By.cssSelector("button.print-popup-button"));
printButton.click();
Thread.sleep(2000);
r.keyPress(KeyEvent.VK_ENTER);
r.keyRelease(KeyEvent.VK_ENTER);
}
}
要使用的其他选项:
另见:
关于java - 如何使用 Selenium 单击网页上的打印按钮,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26522739/