如何使用iText将Swing组件绘制为PDF文件？

   <groupId>com.itextpdf</groupId>
   <artifactId>itextpdf</artifactId>
   <version>5.5.13.2</version>
</dependency>

JLabel label = new JLabel("Hello, World!");
label.setBounds(50, 50, 200, 50);

PdfDocument pdfDocument = new PdfDocument(new PdfWriter("output.pdf"));
PdfGraphics2D pdfGraphics = new PdfGraphics2D(pdfDocument.getPage(1));

label.paint(pdfGraphics);

pdfGraphics.dispose();
pdfDocument.close();