我正在使用 PDFBox 从我的 web 应用程序中提取数据并将其放入 PDF 中。我有一种方法可以在每个 PDF 页面上绘制标题。但是,当我向每一页添加图像时,文档内存不足。我想知道是否有人对解决方案有任何想法?这是我的 drawHeader 方法:
公共静态无效drawHeader(PDDocument doc,PDPage页面,PDPageContentStream contentStream,int [] columnWidths,int pageNumber)抛出IOException {
contentStream.beginText();
PDFont font = PDType1Font.HELVETICA_BOLD;
contentStream.setFont(font, 24);
contentStream.moveTextPositionByAmount(50, 750);
contentStream.drawString("Producer License Report");
contentStream.endText();
contentStream.beginText();
contentStream.moveTextPositionByAmount(550, 750);
contentStream.setFont(PDType1Font.HELVETICA_BOLD, 8);
contentStream.drawString("Page " + pageNumber);
contentStream.endText();
contentStream.drawLine(50, 740, 340, 740);
contentStream.drawLine(16, 680, 595, 680);
List<String> headerList = new LinkedList<String>();
headerList.add("NPN");
headerList.add("First Name");
headerList.add("Last Name");
headerList.add("Suffix");
headerList.add("License State");
headerList.add("Resident State");
headerList.add("License Number");
contentStream.setFont(PDType1Font.HELVETICA_BOLD, 9);
float textx = 15;
float texty = 685;
InputStream in = new FileInputStream(new File("logo.jpg"));
PDJpeg img = new PDJpeg(doc, in);
contentStream.drawImage(img, 375, 720);
for (int i = 0; i < headerList.size(); i++) {
String text = headerList.get(i);
contentStream.beginText();
contentStream.moveTextPositionByAmount(textx, texty);
contentStream.drawString(text);
contentStream.endText();
textx += (columnWidths[i] * 6.5);
}
}