How to read pdf file and write it to outputStream

Question

I need to read a pdf file with filepath  C  file pdf  and write it to outputStream  What is the easiest way to do that    Controller public class ExportTlocrt     Autowired private PhoneBookService phoneBookSer   private void setResponseHeaderTlocrtPDF HttpServletResponse response        response setContentType  application pdf        response setHeader  content-disposition    attachment  filename Tlocrt pdf          RequestMapping value     exportTlocrt html   method   RequestMethod POST  public void exportTlocrt Model model  HttpServletResponse response  HttpServletRequest request        setResponseHeaderTlocrtPDF response       File f   new File  C   Tlocrt pdf         try           OutputStream os   response getOutputStream            byte   buf   new byte 8192           InputStream is   new FileInputStream f           int c   0          while   c   is read buf  0  buf length    gt  0                os write buf  0  c               os flush                      os close            is close          catch  IOException e            e printStackTrace

User · Answer

You can use PdfBox from Apache which is simple to use and has good performance.

Here is an example of extracting text from a PDF file (you can read more here) :

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

public class PDFTest {

 public static void main(String[] args){
 PDDocument pd;
 BufferedWriter wr;
 try {
         File input = new File("C:\\Invoice.pdf");  // The PDF file from where you would like to extract
         File output = new File("C:\\SampleText.txt"); // The text file where you are going to store the extracted data
         pd = PDDocument.load(input);
         System.out.println(pd.getNumberOfPages());
         System.out.println(pd.isEncrypted());
         pd.save("CopyOfInvoice.pdf"); // Creates a copy called "CopyOfInvoice.pdf"
         PDFTextStripper stripper = new PDFTextStripper();
         wr = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(output)));
         stripper.writeText(pd, wr);
         if (pd != null) {
             pd.close();
         }
        // I use close() to flush the stream.
        wr.close();
 } catch (Exception e){
         e.printStackTrace();
        } 
     }
}

UPDATE:

You can get the text using PDFTextStripper:

PDFTextStripper reader = new PDFTextStripper();
String pageText = reader.getText(pd); // PDDocument object created

User · Answer

import java io      public class FileRead         public static void main String   args  throws IOException             File f new File  C   Documents and Settings  abc  Desktop  abc pdf             OutputStream oos   new FileOutputStream  test pdf             byte   buf   new byte 8192            InputStream is   new FileInputStream f            int c   0           while   c   is read buf  0  buf length    gt  0                oos write buf  0  c               oos flush                       oos close            System out println  stop            is close                The easiest way so far  Hope this helps

[java] How to read pdf file and write it to outputStream

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