errors when replace phantomjs to headless chromedriver

Question

i got many errors about js... so i changed to chromedriver headless, and it work better for screenshot a specific element, but i got an errors in a other screenshot(s) code

Starting ChromeDriver 2.45.615291 (ec3682e3c9061c10f26ea9e5cdcf3c53f3f74387) 

on port 44903
Only local connections are allowed.
janv. 31, 2019 7:02:22 AM org.openqa.selenium.remote.ProtocolHandshake createSession
INFOS: Detected dialect: OSS
Exception in thread "AWT-EventQueue-0" java.awt.image.RasterFormatException: (y + height) is outside of Raster
    at sun.awt.image.ByteInterleavedRaster.createWritableChild(Unknown Source)
    at java.awt.image.BufferedImage.getSubimage(Unknown Source)
    at CarteEtdInfo.photoProfile(CarteEtdInfo.java:57)
    at Accueil.<init>(Accueil.java:99)
    at Login$2.actionPerformed(Login.java:287)
    at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
    at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
    at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    at javax.swing.AbstractButton.doClick(Unknown Source)
    at javax.swing.plaf.basic.BasicRootPaneUI$Actions.actionPerformed(Unknown Source)
    at javax.swing.SwingUtilities.notifyAction(Unknown Source)
    at javax.swing.JComponent.processKeyBinding(Unknown Source)
    at javax.swing.KeyboardManager.fireBinding(Unknown Source)
    at javax.swing.KeyboardManager.fireKeyboardAction(Unknown Source)
    at javax.swing.JComponent.processKeyBindingsForAllComponents(Unknown Source)
    at javax.swing.JComponent.processKeyBindings(Unknown Source)
    at javax.swing.JComponent.processKeyEvent(Unknown Source)
    at java.awt.Component.processEvent(Unknown Source)
    at java.awt.Container.processEvent(Unknown Source)
    at java.awt.Component.dispatchEventImpl(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.KeyboardFocusManager.redispatchEvent(Unknown Source)
    at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(Unknown Source)
    at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(Unknown Source)
    at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Source)
    at java.awt.DefaultKeyboardFocusManager.dispatchEvent(Unknown Source)
    at java.awt.Component.dispatchEventImpl(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Window.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$500(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

this is the the code that have errors from class CarteEtdInfo

public void photoProfile() throws IOException {

    String cookie = String.join("\n",Files.readAllLines(Paths.get("temp\\cookie.txt")));

    Login webpage = new Login();
    WebDriver pagee = webpage.driver;
    pagee.get("https://www4.inscription.tn/ORegMx/servlet/AuthentificationEtud?Idsession="+cookie+"&action1=toCarteEtd");


    // Get entire page screenshot
    WebElement taswira = driver.findElement(By.xpath("/html[1]/body[1]/table[1]/tbody[1]/tr[1]/td[1]/table[1]/tbody[1]/tr[1]/td[1]/table[2]/tbody[1]/tr[4]/td[1]/div[2]/div[1]/table[2]/tbody[1]/tr[2]/td[1]/img[1]"));
    File screenshot = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
    BufferedImage fullImg = null;
    try {
        fullImg = ImageIO.read(screenshot);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    // Get the location of element on the page
    org.openqa.selenium.Point point = taswira.getLocation();

    // Get width and height of the element
    int eleWidth = taswira.getSize().getWidth();
    int eleHeight = taswira.getSize().getHeight();

    // Crop the entire page screenshot to get only element screenshot
    BufferedImage eleScreenshot = fullImg.getSubimage(point.getX(), point.getY(), eleWidth, eleHeight); // line 57
    try {
        ImageIO.write(eleScreenshot, "png", screenshot);
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }

    // Copy the element screenshot to disk
    File screenshotLocation = new File("temp\\avatar.png");
    try {
        FileUtils.copyFile(screenshot, screenshotLocation);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

this is the line 57

        BufferedImage eleScreenshot = fullImg.getSubimage(point.getX(), point.getY(), eleWidth, eleHeight);

the preivious code of screenshot an element in Login class works fine, so why this one have a problem ?

also the chromedriver not headless works fine but the headless not

Answer 1

Headless chrome default window size might be smaller than expected and this might cause your element to be outside of the window, hence not visible. You can either set the widndow size yourself or maximize window by using:

chromeOptions.addArguments(""--start-maximized")

Answer 2

i fixed the problem by adding

chromeOptions.addArguments("window-size=1980,960");