iText的：如何添加里面的PDF空白页？(IText: How to add blank page

我有PDF文档，例如25页。如何添加一个空白页beetwen第10页和11？

Answer 1:

首先击中谷歌：

/*
 * This class is part of the book "iText in Action - 2nd Edition"
 * written by Bruno Lowagie (ISBN: 9781935182610)
 * For more info, go to: http://itextpdf.com/examples/
 * This example only works with the AGPL version of iText.
 */

package part1.chapter05;

import java.io.FileOutputStream;
import java.io.IOException;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfWriter;

public class NewPage {

/** Path to the resulting PDF file. */
public static final String RESULT
    = "results/part1/chapter05/new_page.pdf";

/**
 * Main method creating the PDF.
 * @param    args    no arguments needed
 * @throws IOException 
 * @throws DocumentException 
 */
public static void main(String[] args) throws IOException, DocumentException {
    // step 1
    Document document = new Document();
    // step 2
    PdfWriter writer
        = PdfWriter.getInstance(document, new FileOutputStream(RESULT));
    // step 3
    document.open();
    // step 4
    document.add(new Paragraph("This page will NOT be followed by a blank page!"));
    document.newPage();
    // we don't add anything to this page: newPage() will be ignored
    document.newPage();
    document.add(new Paragraph("This page will be followed by a blank page!"));
    document.newPage();
    writer.setPageEmpty(false);
    document.newPage();
    document.add(new Paragraph("The previous page was a blank page!"));
    // step 5
    document.close();

    }
}

Answer 2:

在您使用， document.newPage(); ，它将如果你不添加任何内容被忽略。所以，如果你需要的空白页，再加入writer.setPageEmpty(false); 打完电话后右newPage()

Answer 3:

只要看看PdfWriter的方法如下：

http://api.itextpdf.com/itext/com/itextpdf/text/pdf/PdfWriter.html#setPageEmpty(boolean ）

应该像这样：

Document doc = new Document();
PdfWriter pdfWriter
        = PdfWriter.getInstance(document, new FileOutputStream("file.pdf"));
pdfWriter.setPageEmpty(false);
doc.newPage();
doc.close();

你告诉笔者，该页面是不是空的，即使是这样，那么一个新的页面将被创建。