使用pdfbox在现有表单上书写-pdf

Question

我对Java比较陌生，我想用PDFbox取代现有的基于iText的Javascript。（Java 2.0）我有一个pdf-Formsheet（但这个表没有Acroform条目），我想用信息（姓名、出生日期等）填充它。pdf是一个矩形的特殊大小（像一张联系人卡片）。

  File file = new File("ToBeFilled.pdf"); 

  PDDocument document = PDDocument.load(file); 

  System.out.println("PDF loaded"); 

 //Retrieving the page
  PDPage page = (PDPage)document.getPages().get( 0 );

  PDFont font = PDType1Font.HELVETICA_BOLD;
  PDPageContentStream content = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.APPEND, true);

  content.beginText();      
  //Setting the font to the Content stream  
  content.setFont(font, 30);  

  //Setting the position for the line (float x, float y), (0,0) = lower left corner
  content.newLineAtOffset(100, 400);
  String text = "This is the sample document and we are adding content to it.";
  String text1 = "This is an example of adding text to a page in the pdf document. we can add as many lines";
  String text2 = "as we want like this using the ShowText()  method of the ContentStream class";
  //Adding text in the form of string 
  content.showText(text); 
  //Adding text in the form of string
  content.newLine();
  content.showText(text1);
  content.newLine();
  content.showText(text2);

  //Ending the content stream
  content.endText();
  System.out.println("Text added"); 

  content.close();
  //Saving the document 
  document.save("newPrint.pdf");

  //Closing the document  
  document.close(); 

文本不显示。我错过了什么？我想，只要有正确的文字位置，我就可以简单地在PDF上写字了？

Answer 1

源头在工作。可能您的content.newlineatoffset(100,400）；对于您的小卡来说太大了--超出了界限。

顺便说一下，您必须setleading(float)才能有意义地使用newline()。