问PDFBox:如何在当前页面填满后创建新页面和定位文本

EN

//for writing filenames           
PDDocument doc = PDDocument.load(this.getClass().getResourceAsStream("/Vorlagen/Analyze/ReportTemplate.pdf"));
PDPage curFileNamePage = new PDPage(PDRectangle.A4);
doc.addPage(curFileNamePage);

contentStream = new PDPageContentStream(doc, curFileNamePage, PDPageContentStream.AppendMode.APPEND, true, true);
contentStream.setFont(pdfFont, 12);
contentStream.beginText();
float curYVal = 650f;
contentStream.newLineAtOffset(20, curYVal);

for (int idx = 0; idx < 377; idx++) {
    if (curYVal - 15f > 0) {
        curYVal = curYVal - 15f;
        contentStream.newLineAtOffset(0, curYVal);
        contentStream.showText("" + idx);
    } else {
        contentStream.endText();
        contentStream.close(); // close writing area
        curFileNamePage = new PDPage(PDRectangle.A4);
        doc.addPage(curFileNamePage);

        contentStream = new PDPageContentStream(doc, curFileNamePage, PDPageContentStream.AppendMode.APPEND, true, true);
        contentStream.setFont(pdfFont, 12);
        contentStream.beginText();
        curYVal = 650f;
        contentStream.newLineAtOffset(0, curYVal);
        contentStream.showText("" + idx);
            }

}
contentStream.endText();
contentStream.close(); // close writing area

doc.save("C:\\Users\\noname\\Desktop\\765.pdf");//Saving the document
doc.close();