pdfbox 简单 实例

研究pdfbox的初衷是因为C++调用的第三方组件没有生成页眉和页脚的功能，所以希望能借用java实现一下。google了一些文章，看到比较好用的处理pdf的第三方jar包有itext，pdfbox...。貌似itext比pdfbox更加出名，之前也有用过做些简单的例子。之所以选择pdfbox，是因为pdfbox处理pdf的功能貌似更加强大一些，下面几行代码，完全是为了给自己留一些草稿，方便以后温习。用pdfbox，并没有明确规定页眉页脚的概率，只需要选择好坐标点，然后draw即可。

package com.hp.pdf.demo; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Set; import org.apache.pdfbox.exceptions.COSVisitorException; import org.apache.pdfbox.io.RandomAccessFile; import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDPage; import org.apache.pdfbox.pdmodel.edit.PDPageContentStream; import org.apache.pdfbox.pdmodel.font.PDFont; import org.apache.pdfbox.pdmodel.font.PDType1Font; import org.apache.pdfbox.pdmodel.graphics.xobject.PDCcitt; import org.apache.pdfbox.pdmodel.graphics.xobject.PDJpeg; import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectImage; import org.apache.pdfbox.pdmodel.interactive.documentnavigation.destination.PDPageDestination; import org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDDocumentOutline; import org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDOutlineItem; public class PdfManager { // Hold the report font size. private final static float FONT_SIZE = 10f; // Hold the initial x position. private final static float X0 = 5f; // Hold the padding bottom of the document. private final static float PADDING_BOTTOM_OF_DOCUMENT = 30f; public static void main(String[] args) { PdfManager pm = new PdfManager(); // pm.testBookMarks("C://hibernate_reference.pdf"); // pm.createPdf("C://test1.pdf"); // pm.handlePdf("C://hibernate_reference.pdf"); // pm.addFooter("C://test.pdf"); /* try { pm.createPDFFromImage("C://test.pdf", "C://wallpapper.jpg", "c://imagePdf.pdf"); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ //pm.drawTableOnPdf("C://table.pdf"); } private void addFooter(String fileName) { try { PDDocument doc = PDDocument.load(fileName); List<PDPage> pages = doc.getDocumentCatalog().getAllPages(); Iterator<PDPage> it = pages.iterator(); int i = 0; while (it.hasNext()) { PDPage page = it.next(); PDPageContentStream contentStream = new PDPageContentStream( doc, page, true, true); contentStream.beginText(); contentStream.setFont(PDType1Font.HELVETICA_BOLD, FONT_SIZE); contentStream.moveTextPositionByAmount(100, 800); contentStream.drawString((i++) + " - " + pages.size()); contentStream.endText(); contentStream.close(); } doc.save(fileName); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (COSVisitorException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public void handlePdf(String fileName) { try { PDDocument doc = PDDocument.load(fileName); doc.getPageMap(); Map<String, Integer> pageMaps = doc.getPageMap(); Set<String> keys = pageMaps.keySet(); Iterator<String> it = keys.iterator(); while (it.hasNext()) { String key = it.next(); Integer value = pageMaps.get(key); System.out.println("Key: " + key + "==Value:" + value); } System.out.println(doc.getNumberOfPages()); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public void createPdf(String fileName) { PDDocument doc = null; try { doc = new PDDocument(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } for (int i = 0; i < 5; i++) { PDPage page = new PDPage(); PDFont font = PDType1Font.HELVETICA_BOLD; doc.addPage(page); PDPageContentStream contentStream; try { contentStream = new PDPageContentStream(doc, page); contentStream.beginText(); contentStream.setFont(font, 12); contentStream.moveTextPositionByAmount(100, 100); contentStream.drawString("Page " + (i + 1)); contentStream.moveTextPositionByAmount(0, 100); contentStream.endText(); contentStream.close(); doc.save(fileName); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (COSVisitorException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } public void createPDFFromImage(String inputFile, String image, String outputFile) throws IOException { // the document PDDocument doc = null; try { doc = PDDocument.load(inputFile); // we will add the image to the first page. PDPage page = (PDPage) doc.getDocumentCatalog().getAllPages() .get(0); PDXObjectImage ximage = null; if (image.toLowerCase().endsWith(".jpg")) { ximage = new PDJpeg(doc, new FileInputStream(image)); } else { // BufferedImage awtImage = ImageIO.read( new File( image ) ); // ximage = new PDPixelMap(doc, awtImage); throw new IOException("Image type not supported:" + image); } PDPageContentStream contentStream = new PDPageContentStream(doc, page, true, true); contentStream.drawImage(ximage, 20, 20); contentStream.close(); doc.save(outputFile); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (COSVisitorException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { if (doc != null) { doc.close(); } } } public static void drawTableOnPdf(String fileName){ try { PDDocument doc = new PDDocument(); PDPage page = new PDPage(); doc.addPage( page ); PDPageContentStream contentStream = new PDPageContentStream(doc, page); String[][] content = {{"a","b", "1"}, {"c","d", "2"}, {"e","f", "3"}, {"g","h", "4"}, {"i","j", "5"}} ; drawTable(page, contentStream, 700, 100, content); contentStream.close(); doc.save(fileName); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (COSVisitorException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void drawTable(PDPage page, PDPageContentStream contentStream, float y, float margin, String[][] content) throws IOException { final int rows = content.length; final int cols = content[0].length; final float rowHeight = 20f; final float tableWidth = page.findMediaBox().getWidth() - margin - margin; final float tableHeight = rowHeight * rows; final float colWidth = tableWidth / (float) cols; final float cellMargin = 5f; // draw the rows float nexty = y; for (int i = 0; i <= rows; i++) { contentStream.drawLine(margin, nexty, margin + tableWidth, nexty); nexty -= rowHeight; } // draw the columns float nextx = margin; for (int i = 0; i <= cols; i++) { contentStream.drawLine(nextx, y, nextx, y - tableHeight); nextx += colWidth; } // now add the text contentStream.setFont(PDType1Font.HELVETICA_BOLD, 12); float textx = margin + cellMargin; float texty = y - 15; for (int i = 0; i < content.length; i++) { for (int j = 0; j < content[i].length; j++) { String text = content[i][j]; contentStream.beginText(); contentStream.moveTextPositionByAmount(textx, texty); contentStream.drawString(text); contentStream.endText(); textx += colWidth; } texty -= rowHeight; textx = margin + cellMargin; } } public void testBookMarks(String filePath) { try { PDDocument doc = PDDocument.load(filePath); PDDocumentOutline root = doc.getDocumentCatalog() .getDocumentOutline(); PDOutlineItem item = root.getFirstChild(); while (item != null) { System.out.println("Item:" + item.getTitle()); PDOutlineItem child = item.getFirstChild(); while (child != null) { System.out.println(" Child:" + child.getTitle()); child = child.getNextSibling(); } item = item.getNextSibling(); } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }