如何在java pdfbox中按结果拆分pdf文件

Question

import java.io.*;
import org.apache.pdfbox.pdmodel.*;
import org.apache.pdfbox.util.*;
import java.util.regex.*;

public class PDFtest1 {
public static void main(String[] args){
PDDocument pd;
try {

     File input = new File("G:\\Sales.pdf");

     // StringBuilder to store the extracted text
     StringBuilder sb = new StringBuilder();
     pd = PDDocument.load(input);
     PDFTextStripper stripper = new PDFTextStripper();

     // Add text to the StringBuilder from the PDF
     sb.append(stripper.getText(pd));


     Pattern p = Pattern.compile("Invoice No.\\s\\w\\d\\d\\d\\d\\d\\d\\d\\d\\d\\d");

     // Matcher refers to the actual text where the pattern will be found
     Matcher m = p.matcher(sb);

     while (m.find()){
         // group() method refers to the next number that follows the pattern we have specified.
         System.out.println(m.group());
     }

     if (pd != null) {
         pd.close();
     }
   } catch (Exception e){
     e.printStackTrace();
    }
 }
 }  

run:
Invoice No. D0000003010
Invoice No. D0000003011
Invoice No. D0000003011
Invoice No. D0000003011
Invoice No. D0000003011
Invoice No. D0000003012
Invoice No. D0000003012
Invoice No. D0000003012
Invoice No. D0000003013
Invoice No. D0000003013
Invoice No. D0000003014
Invoice No. D0000003014
Invoice No. D0000003015
Invoice No. D0000003016

我需要根据发票编号拆分pdf。例如发票号D0000003011,所有pdf页面应合并为单个pdf,依此类推。我怎样才能做到。..

Answer 1

public static void main(String[] args) throws IOException, COSVisitorException
{
    File input = new File("G:\\Sales.pdf");

    PDDocument outputDocument = null;
    PDDocument inputDocument = PDDocument.loadNonSeq(input, null);
    PDFTextStripper stripper = new PDFTextStripper();
    String currentNo = null;
    for (int page = 1; page <= inputDocument.getNumberOfPages(); ++page)
    {
        stripper.setStartPage(page);
        stripper.setEndPage(page);
        String text = stripper.getText(inputDocument);
        Pattern p = Pattern.compile("Invoice No.(\\s\\w\\d\\d\\d\\d\\d\\d\\d\\d\\d\\d)");

        // Matcher refers to the actual text where the pattern will be found
        Matcher m = p.matcher(text);
        String no = null;
        if (m.find())
        {
            no = m.group(1);
        }
        System.out.println("page: " + page + ", value: " + no);

        PDPage pdPage = (PDPage) inputDocument.getDocumentCatalog().getAllPages().get(page - 1);

        if (no != null && !no.equals(currentNo))
        {
            saveCloseCurrent(currentNo, outputDocument);
            // create new document
            outputDocument = new PDDocument();
            currentNo = no;
        }
        if (no == null && currentNo == null)
        {
            System.out.println ("header page ??? " + page + " skipped");
            continue;
        }
        // append page to current document
        outputDocument.importPage(pdPage);
    }
    saveCloseCurrent(currentNo, outputDocument);
    inputDocument.close();
}

private static void saveCloseCurrent(String currentNo, PDDocument outputDocument)
        throws IOException, COSVisitorException
{
    // save to new output file
    if (currentNo != null)
    {
        // save document into file
        File f = new File(currentNo + ".pdf");
        if (f.exists())
        {
            System.err.println("File " + f + " exists?!");
            System.exit(-1);
        }
        outputDocument.save(f);
        outputDocument.close();
    }
}

当心：

• 尚未使用您的文件进行测试（因为我没有它）；
• 代码假设相同的发票号码总是在一起；
• 正则表达式略有更改；
• 确保第一个和最后一个PDF文件正确，并随机检查几个文件，如果可用，则使用不同的查看器；
• 验证文件总数是否与预期相同；
• 所有文件的总大小将大于源文件，这是由于字体资源的原因；
• 请使用1.8.10版本。不要同时使用PDFBox 0.7.3.jar！
• 错误处理是非常基本的，您需要更改它；

2015年8月19日更新：

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