Tuesday, 27 June 2023

Playwright: get collection of elements matched to a selector

Using ‘page.locator(classSelector).allTextContents()’ method, we can get an array of textContent values for all matching nodes.

 

Example

List<String> allParagraphs = page.locator(classSelector).allTextContents();

 

Find the below working application.

 

collectionOfElements.html

 

<html>
	<body>
		<p class="mypara">Paragraph1</p>
		<p class="mypara">Paragraph2</p>
		<p class="mypara">Paragraph3</p>
		<p class="mypara">Paragraph4</p>
	</body>
</html>

 

FileUtil.java

package com.sample.app.util;

import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;

public class FileUtil {
	
	public static String resourceAsString(String resourceName) throws IOException {
		ClassLoader classLoader = FileUtil.class.getClassLoader();
		URL url = classLoader.getResource(resourceName);
		if (url == null) {
			return null;
		}

		URLConnection urlConnection = url.openConnection();

		urlConnection.setUseCaches(false);

		try (InputStreamReader inputStreamReader = new InputStreamReader(urlConnection.getInputStream())) {
			char[] buffer = new char[1048];
			StringBuilder builder = new StringBuilder();

			int count = -1;
			while ((count = inputStreamReader.read(buffer, 0, buffer.length)) != -1) {
				builder.append(buffer, 0, count);
			}

			return builder.toString();
		}

	}
}

GetAllTheMatchedElements.java

package com.sample.app.locators;

import java.io.File;
import java.io.IOException;
import java.util.List;

import com.microsoft.playwright.Browser;
import com.microsoft.playwright.BrowserType;
import com.microsoft.playwright.Page;
import com.microsoft.playwright.Playwright;
import com.sample.app.util.FileUtil;

public class GetAllTheMatchedElements {
	public static void main(String[] args) throws IOException {
		try (Playwright playwright = Playwright.create()) {
			Browser browser = playwright.chromium()
					.launch(new BrowserType.LaunchOptions().setHeadless(false).setSlowMo(100));
			final String content = FileUtil
					.resourceAsString("miscellaneous" + File.separator + "collectionOfElements.html");

			Page page = browser.newPage();
			page.setContent(content);

			String classSelector = "p[class=\"mypara\"]";
			List<String> allParagraphs = page.locator(classSelector).allTextContents();

			System.out.println("allParagraphs : " + allParagraphs);
		}
	}
}

Output

allParagraphs : [Paragraph1, Paragraph2, Paragraph3, Paragraph4]

 

 

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