TextFragment.setText("12345") not updating text in scanned pdf file

Aspose.PDF Product Family
1

Hi,

I wanted to update scanned copy of a PDF file for the “Loan amount” value. But it could fine the text and could not update in the saved file.

// Create TextAbsorber object to find all instances of the input search phrase
TextFragmentAbsorber textFragmentAbsorber = new TextFragmentAbsorber(“3.875”);

    // Accept the absorber for first page of document
    pdfDocument.getPages().accept(textFragmentAbsorber);
    
    // Get the extracted text fragments into collection
    TextFragmentCollection textFragmentCollection = textFragmentAbsorber.getTextFragments();
    
    // Loop through the fragments
    for (TextFragment textFragment : (Iterable<TextFragment>) textFragmentCollection) {
        // Update text and other properties
    	System.out.println("found: ="+textFragment.getText());
    	textFragment.getReplaceOptions().
        textFragment.setText("4.875");
      
    }
    // Save the updated PDF file
   
    try {
		Thread.sleep(1000);
	} catch (InterruptedException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
3

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Please try to update the loan amount or interest rate. It not able to update

4

@srimanta

We have managed to reproduce the same issue at our side. For the sake of correction, we have logged this problem in our issue tracking system as PDFJAVA-41063. You will be notified via this forum thread once this issue is resolved.

We apologize for your inconvenience.

5

Please let me know if this issue got resolved? In that case what is the resolution?

6

@srimanta

It is to inform you that the issue which you are facing is actually not a bug in Aspose.PDF. So, we have closed this issue (PDFJAVA-41063) as ‘Not a Bug’.

Your PDF document is searchable and it contains scans as images covered with invisible text used special OCR hidden font. Please check SpecialInvisibleFont.png (134.0 KB)
and DocumentStructure.png (115.2 KB).

The text is replaced in the PDF and can be found but visually you still see old text, because it is on image. We recommend you to use RedactionAnnotation to clear old text from image and add a new text with required values with the following code example.

Document pdfDocument = new Document(MyDir+"Loan Application - Signed.pdf");

// Create TextAbsorber object to find all instances of the input search phrase
TextFragmentAbsorber textFragmentAbsorber = new TextFragmentAbsorber("3.875");

// Accept the absorber for first page of document
pdfDocument.getPages().accept(textFragmentAbsorber);

// Get the extracted text fragments into collection
TextFragmentCollection textFragmentCollection = textFragmentAbsorber.getTextFragments();

// Loop through the fragments
for (TextFragment textFragment : (Iterable<TextFragment>) textFragmentCollection) {
    // Update text and other properties
    System.out.println("found: ="+textFragment.getText());

    Page page = textFragment.getPage();

    float fontSize = textFragment.getTextState().getFontSize();
    System.out.println("font name: ="+textFragment.getTextState().getFont().getFontName());
    Rectangle rectangle = textFragment.getRectangle();
    System.out.println(rectangle);
    System.out.println(textFragment.getPosition());
    Rectangle redactRectangle = new Rectangle(
    rectangle.getLLX()-1, rectangle.getLLY()-1,
    rectangle.getURX()+1, rectangle.getURY()+1);
    RedactionAnnotation annotation = new RedactionAnnotation(page, redactRectangle);
    annotation.setFillColor(Color.getWhite());
    annotation.setColor(Color.getWhite());
    annotation.redactExact();
    page.getAnnotations().add(annotation);
    page.flatten();//this code will delete text and part of image
    //we should add a new textFragment using visible font

    TextFragment tf = new TextFragment("4.875");
    tf.setRectangle(rectangle);
    //2 is correction to reduce baseline difference between fonts.
    tf.setPosition(new Position(rectangle.getLLX(),rectangle.getLLY()-2));
    tf.getTextState().setFontSize(fontSize);
    tf.getTextState().setFontStyle(FontStyles.Bold);
    page.getParagraphs().add(tf);
}
// Save the updated PDF file
pdfDocument.save(MyDir+"21.11.pdf");
7

@tahir.manzoor

Thank you for giving the solution but it won’t work for me
When I run your code, I am getting this exception. Can I get temporary license to test and see if this work for me

Exception in thread “main” class com.aspose.pdf.exceptions.IndexOutOfRangeException: At most 4 elements (for any collection) can be viewed in evaluation mode.
com.aspose.pdf.ADocument.lf(Unknown Source)
com.aspose.pdf.ADocument.lI(Unknown Source)
com.aspose.pdf.XImageCollection.lI(Unknown Source)
com.aspose.pdf.XImageCollection.get_Item(Unknown Source)
com.aspose.pdf.ImagePlacementAbsorber.lf(Unknown Source)
com.aspose.pdf.ImagePlacementAbsorber.lI(Unknown Source)
com.aspose.pdf.ImagePlacementAbsorber.visit(Unknown Source)
com.aspose.pdf.Redaction.lI(Unknown Source)
com.aspose.pdf.RedactionAnnotation.redactExact(Unknown Source)
pdf.pdfdata.LoanApplication.updateLoanApplication(LoanApplication.java:57)
pdf.pdfdata.LoanApplication.main(LoanApplication.java:22)

8

@srimanta

Please use the latest version of Aspose.PDF for Java 21.11 to avoid this issue.

9

Tahir, I used the below version but still getting the same error when I try to execute the code you given,
The error is coming from below line

annotation.redactExact();

com.aspose aspose-pdf 21.11

found: =3.875
font name: =OCR_Hidden
141.65012469314,596.4976977065,163.312743132051,604.817876733824
( 141.65012469314, 596.4976977065 )
Exception in thread “main” class com.aspose.pdf.exceptions.IndexOutOfRangeException: At most 4 elements (for any collection) can be viewed in evaluation mode.
com.aspose.pdf.ADocument.lf(Unknown Source)
com.aspose.pdf.ADocument.lI(Unknown Source)
com.aspose.pdf.XImageCollection.lI(Unknown Source)
com.aspose.pdf.XImageCollection.get_Item(Unknown Source)
com.aspose.pdf.ImagePlacementAbsorber.lf(Unknown Source)
com.aspose.pdf.ImagePlacementAbsorber.lI(Unknown Source)
com.aspose.pdf.ImagePlacementAbsorber.visit(Unknown Source)
com.aspose.pdf.Redaction.lI(Unknown Source)
com.aspose.pdf.RedactionAnnotation.redactExact(Unknown Source)

10

@srimanta

You are using Aspose.PDF in evaluation mode. Please get 30 days temporary license and apply it before importing PDF into Aspose.PDF DOM. Please get the temporary license from here:
Get a Temporary License

11

Hi,

I need a temporary license to evaluate aspose PDF. I created an order ID #211129155940 . Please send me the license.

Thanks
Srimanta

12

@srimanta

The license is sent to your email after creating an order for temporary license. Please check your emails. Sometimes emails may land in your Junk/Spam folder therefore please make sure to check these folders as well.