Question

公共类ExtractText {

/**
 * private constructor.
*/
private ExtractText()
{
    //static class
}


public static void main( String[] args ) throws Exception
{


     if(l!=null)
     {
         System.out.println("HERE"+l.length);
         deleteSubs(op);
         System.out.println("Then"+l.length);
     }
     else
     {
         System.out.println("WHERE");
     }

    File y=new File(imgDes);

    if(!y.exists())
    {
        y.mkdirs();
    }
   File z=new File(imgDestination);

   if(!z.exists())
   {
       z.mkdirs();
   }
  File fr=new File(outputFile);

  if(!fr.isDirectory())
  {
      fr.delete();
  }
    // Defaults to text files
    String ext = ".txt";
    int startPage = 1;
    int endPage = Integer.MAX_VALUE;
     Writer output = null;
     PDDocument document =null;       
    try
    {
        try
        {
            URL url = new URL( pdfFile );

            document = PDDocument.load(url, force);

            String fileName = url.getFile();
            if( outputFile == null && fileName.length() >4)
            {
                outputFile = new File( fileName.substring( 0, fileName.length() -4 ) + ext ).getName();
            }
        }
        catch( MalformedURLException e)
        {
            document = PDDocument.load(pdfFile, force);

            if( outputFile == null && pdfFile.length() >4 )
            {
                outputFile = pdfFile.substring( 0, pdfFile.length() -4 ) + ext;
            }
        }

            //document.print();
        if( document.isEncrypted() )
        {
            StandardDecryptionMaterial sdm = new StandardDecryptionMaterial( password );
            document.openProtection(sdm);
            AccessPermission ap = document.getCurrentAccessPermission();
            if( ! ap.canExtractContent() )
            {
                throw new IOException("You do not have permission to extract text" );
            }
        }

        if ((encoding == null) && (toHTML))
        {
            encoding = "UTF-8";
        }
        if( toConsole )
        {
            output = new OutputStreamWriter(System.out);                                                  
        }
        else
        {
          if( encoding != null )
           {
                output = new OutputStreamWriter(new FileOutputStream( outputFile ), encoding );
           }
         else
            {
                    //use default encoding
                output = new OutputStreamWriter(new FileOutputStream( outputFile ) );
            }
        }

        PDFTextStripper4 stripper = null;

        if(toHTML)
        {
            stripper = new PDFText2HTML(encoding);
        }

        else
        {
            stripper = new PDFTextStripper4(encoding);
        }
        File f= new File(imgDestination);
        PDDocument pd;

        int i=0;
        if(f.exists())
        {
            pd=PDDocument.load(pdfFile);
            PDFontDescriptor fd;
            fd = new PDFontDescriptorDictionary();

            List<PDPage> li=pd.getDocumentCatalog().getAllPages();
            for(PDPage page:li)
            {
              PDResources pdr=page.getResources();

              Map<String, PDFont> m=pdr.getFonts();
              PDStream pst;
            for(PDFont pdd:m.values())
            {
                   System.out.println("----------"+pdd.getBaseFont());
                   pdd.getFontDescriptor();
                    fd = pdd.getFontDescriptor();

                   pdd.setFontDescriptor((PDFontDescriptorDictionary)fd);
                   System.out.println("tititititi"+pdd.getFontEncoding());
                   if(pdd.isType1Font())
                   {
                    pst=((PDFontDescriptorDictionary) fd).getFontFile3();
                    System.out.println("In If "+pst);
                   if(pst!= null)
                   {
                       FileOutputStream fos = new FileOutputStream(new File(imgDestination+pdd.getBaseFont().toString()+".pfb"));
                       IOUtils.copy(pst.createInputStream(), fos);
                       i++;
                       System.out.println(i);
                       fos.close();
                    }
                   }
                   else 
                       if(pdd.isTrueTypeFont())
                       {
                           pst= ((PDFontDescriptorDictionary) fd).getFontFile2();
                           System.out.println("In Else-if"+pst);
                           if (pst!= null)
                           {
                               FileOutputStream fos = new FileOutputStream(new File(imgDestination+pdd.getBaseFont().toString()+".ttf"));
                               IOUtils.copy(pst.createInputStream(), fos);
                               i++;
                               System.out.println(i);
                               fos.close();
                           }
                       }
                       else
                           if(pdd.isSymbolicFont())
                           {
                               System.out.println("Symbol.......");
                           }
                   else
                   {

                       System.out.println("In Else");



                   }
               }

            }

        int pageCount = document.getDocumentCatalog().getAllPages().size();
        for (int p = 0; p < pageCount; ++p)
        {
            System.out.println("I am in for loop");
             stripper.setForceParsing( force );
             stripper.setSortByPosition( true );
             stripper.setShouldSeparateByBeads(separateBeads);
            stripper.setStartPage( p);
            stripper.setEndPage( p);
            stripper.writeText( document, output );
            FileOutputStream fos = new FileOutputStream(new File(f5+(p+1)+".html"));
            output.close();


        }

        PDDocumentInformation info = document.getDocumentInformation();
        System.out.println( "Page Count=" + document.getNumberOfPages());
        System.out.println( "Title=" + info.getTitle());
        System.out.println( "Author=" + info.getAuthor());
        System.out.println( "Subject=" + info.getSubject() );
        System.out.println( "Keywords=" + info.getKeywords() );
        System.out.println( "Creator=" + info.getCreator() );
        System.out.println( "Producer=" + info.getProducer() );
        System.out.println( "Creation Date=" + info.getCreationDate() );
        System.out.println( "Modification Date=" + info.getModificationDate());
        System.out.println( "Trapped=" + info.getTrapped());


   }
    }catch(Exception e)
     {
        e.printStackTrace();
     }
    finally
    {
        if( output != null)
        {
            output.close();
        }
        if( document != null )
        {
            document.close();
        }
    }
}


private static void deleteSubs(File op) 
{
    // TODO Auto-generated method stub
     File[] files = op.listFiles();
     System.out.print("In delete folder");
        if(files!=null) 
        {
            //some JVMs return null for empty dirs
            for(File f: files) 
            {
                if(f.isDirectory()) 
                {
                    deleteSubs(f);
                } 
                else 
                {
                    f.delete();
                }
            }
        }
        op.delete();
}

}

现在我能够将整个pdf转换为html文件，即。我只提取文本而不是图像，但我想将pdf的每个页面都放到单个html中，所以任何解决方案都对我很有帮助.. THANKYOU

Answer 1

答案在你的问题中：只需设置

即可

    stripper.setStartPage( p );
    stripper.setEndPage( p );

相应。所以你会像这样循环：

int pageCount = document.getDocumentCatalog().getAllPages().size();
for (int p = 0; p < pageCount; ++p)
{
    //... your options
    stripper.setStartPage(p);
    stripper.setEndPage(p);
    FileOutputStream fos = new FileOutputStream(new File(f5+(p+1)+".html"));
    stripper.writeText(document, fos);
    fos.close();
}

如果你得到与排序比较器有关的异常，请使用setSortByPosition（false），或者等待修复此问题的版本1.8.8。

使用pdfbox库将pdf转换为html页面

1 个答案: