Question

我有一个pdf文件，其中包含60页。在每个页面中，我都使用Apache PDFBOX独特且重复的发票编号。

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();
    }
 }
 }

我能够使用java正则表达式阅读所有发票编号。最后结果如下

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。例如发票编号D0000003011，所有pdf页面应合并为单个pdf，依此类推。我能否实现这一目标。 ..

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();
    }
}

请注意：

尚未对您的文件进行测试（因为我没有测试）;
代码假设相同的发票号码始终在一起;
你的正则表达式略有改变;
确保第一个和最后一个PDF文件是正确的，并随机查看一些，如果可用，请使用不同的查看器;
验证文件总数是否符合预期;
所有文件的总和大小将大于源文件，这是因为字体资源;
使用1.8.10版本。不要同时使用PDFBox 0.7.3.jar！
错误处理非常基础，你需要改变它;

更新19.8.2015：

它现在支持没有发票号的页面，这些页面将被追加。

如何在java pdfbox中按结果拆分pdf文件

1 个答案: