JavaScript高级程序设计[第3版]

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