JavaScript高级程序设计[第3版]

package xyz.huning.toolkit.pdf;import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.pdf.PdfCopy;
import com.lowagie.text.pdf.PdfImportedPage;
import com.lowagie.text.pdf.PdfReader;public class MyPDFUtil {public static void main(String[] args) {int n = 19;partitionPdfFile("tmp/data.pdf","tmp/Chapter14.pdf", n + 345,n + 411);}/*** 截取pdfFile的第from页至第end页，组成一个新的文件名* @param pdfFile* @param subfileName* @param from* @param end*/public static void partitionPdfFile(String pdfFile,String newFile, int from, int end) {Document document = null;PdfCopy copy = null;        try {PdfReader reader = new PdfReader(pdfFile);            int n = reader.getNumberOfPages();         if(end==0){end = n;}ArrayList<String> savepaths = new ArrayList<String>();String staticpath = pdfFile.substring(0, pdfFile.lastIndexOf("\\")+1);String savepath = staticpath+ newFile;savepaths.add(savepath);document = new Document(reader.getPageSize(1));copy = new PdfCopy(document, new FileOutputStream(savepaths.get(0)));document.open();for(int j=from; j<=end; j++) {document.newPage(); PdfImportedPage page = copy.getImportedPage(reader, j);copy.addPage(page);}document.close();} catch (IOException e) {e.printStackTrace();} catch(DocumentException e) {e.printStackTrace();}}}

PDF处理开源项目：http://pdfbox.apache.org/index.html