用于在pdf中突出显示文本颜色的java代码

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.font.PDType1Font;
import org.apache.pdfbox.pdmodel.common.PDRectangle;

import java.io.IOException;

public class HighlightTextInPDF {
    public static void main(String[] args) {
        String filePath = "path/to/your/pdf/file.pdf";
        String outputFilePath = "path/to/output/pdf/file.pdf";
        String searchText = "highlighted text";

        try {
            PDDocument document = PDDocument.load(new File(filePath));
            PDPage page = document.getPage(0); // Assuming you want to highlight text in the first page

            PDPageContentStream contentStream = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.APPEND, true, true);

            contentStream.setNonStrokingColor(255, 0, 0); // Set the highlight color (red in this example)
            contentStream.setFont(PDType1Font.HELVETICA_BOLD, 12); // Set the font and size

            // Find and highlight the text
            PDFTextStripper stripper = new PDFTextStripper();
            stripper.setSortByPosition(true);
            stripper.setStartPage(0);
            stripper.setEndPage(document.getNumberOfPages());
            String text = stripper.getText(document);

            int startIndex = text.indexOf(searchText);
            while (startIndex >= 0) {
                int endIndex = startIndex + searchText.length();
                PDRectangle boundingBox = stripper.getRegionBBox().getBounds();
                float x = boundingBox.getLowerLeftX();
                float y = boundingBox.getUpperRightY();

                contentStream.beginText();
                contentStream.newLineAtOffset(x, y);
                contentStream.showText(text.substring(startIndex, endIndex));
                contentStream.endText();

                startIndex = text.indexOf(searchText, endIndex);
            }

            contentStream.close();
            document.save(outputFilePath);
            document.close();

            System.out.println("Text highlighted successfully!");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}