如何在使用itext 7 API生成的PDF中显示RTL中的阿拉伯字符串？

PdfDocument pdfDoc = new PdfDocument(new PdfWriter("output.pdf"));
Document document = new Document(pdfDoc, PageSize.A4);

String fontPath = "path/to/your/font.ttf";
PdfFont arabicFont = PdfFontFactory.createFont(fontPath, PdfEncodings.IDENTITY_H, true);

Paragraph paragraph = new Paragraph("مرحبا بك في العالم");
paragraph.setFont(arabicFont);
paragraph.setTextAlignment(TextAlignment.RIGHT);
document.add(paragraph);

document.close();