I am trying to get some DOM elements using Selenium and I am doing all of this using Java but I am getting this Error when trying it out:
Exception in thread "main" org.openqa.selenium.StaleElementReferenceException: stale element reference: element is not attached to the page document
I am still a newbie in all this but the code I am using to retrieve the DOM element is:
driver.get("https://www.qp.alberta.ca/570.cfm?frm_isbn=9780779808571&search_by=link");
String pagePdfUrl = driver.findElement(By.xpath("//img[@alt='View PDF']//..//parent::a")).getAttribute("href");
I believe the error is that it cannot find the XPath given although this xpath exists. Any help would be appreciated.
Thank you.
There is a href attribute is having pdf URL but that URL opens the pdf within webpage.
So I extracted the pdf URL from href attribute and fetched the pdf name from that then concatenated with https://www.qp.alberta.ca/documents/Acts/ URL.
You can write the code like below to get the pdf URL.
PDF URL: driver = new ChromeDriver();
/*I hard coded below URL. You need parameterize based on your requirement.*/
driver.get("https://www.qp.alberta.ca/570.cfm?frm_isbn=9780779808571&search_by=link");
String pagePdfUrl = driver.findElement(By.xpath("//img[@alt='View PDF']//..//parent::a")).getAttribute("href");
System.out.println("Page PDF URL: " + pagePdfUrl);
String pdfName = StringUtils.substringBetween(pagePdfUrl, "page=", ".cfm&");
driver.get("https://www.qp.alberta.ca/documents/Acts/" + pdfName + ".pdf");
PDF:Required ChromOptions:
ChromeOptions options = new ChromeOptions();
HashMap<String, Object> chromeOptionsMap = new HashMap<String, Object>();
chromeOptionsMap.put("plugins.plugins_disabled", new String[] { "Chrome PDF Viewer" });
chromeOptionsMap.put("plugins.always_open_pdf_externally", true);
chromeOptionsMap.put("download.default_directory", "C:\\Users\\Downloads\\test\\");
options.setExperimentalOption("prefs", chromeOptionsMap);
options.addArguments("--headless");
Accessing PDF:
driver = new ChromeDriver(options);
driver.get("https://www.qp.alberta.ca/570.cfm?frm_isbn=9780779808571&search_by=link");
String pagePdfUrl = driver.findElement(By.xpath("//img[@alt='View PDF']//..//parent::a")).getAttribute("href");
System.out.println("Page PDF URL: " + pagePdfUrl);
String pdfName = StringUtils.substringBetween(pagePdfUrl, "page=", ".cfm&");
System.out.println("Only PDF URL: "+"https://www.qp.alberta.ca/documents/Acts/" + pdfName + ".pdf");
driver.get("https://www.qp.alberta.ca/documents/Acts/" + pdfName + ".pdf");
OutPut:
Page PDF URL: https://www.qp.alberta.ca/1266.cfm?page=2017ch18_unpr.cfm&leg_type=Acts&isbncln=9780779808571
Only PDF URL: https://www.qp.alberta.ca/documents/Acts/2017ch18_unpr.pdf
Import for StringUtils:
import org.apache.commons.lang3.StringUtils;