util.PdfUtil.java Source code

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Here is the source code for util.PdfUtil.java

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/**
* Copyright (c) 2001-2012 "Redbasin Networks, INC" [http://redbasin.org]
*
* This file is part of Redbasin OpenDocShare community project.
*
* Redbasin OpenDocShare is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/

package util;

import com.lowagie.text.pdf.*;
import com.lowagie.text.DocumentException;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import java.util.*;

/**
 *
 * @author tanisha
 */
public class PdfUtil {

    public String processText(String pdfFile) throws RedbasinException {
        try {
            PdfReader reader = new PdfReader(pdfFile);
            return processText(reader);
        } catch (Exception e) {
            throw new RedbasinException("Some PdfReader error occured", e);
        }
    }

    public String processText(byte[] pdfBytes) throws RedbasinException {
        try {
            PdfReader reader = new PdfReader(pdfBytes);
            return processText(reader);
        } catch (Exception e) {
            throw new RedbasinException("Come PdfReader bytes error", e);
        }
    }

    public String processText(PdfReader reader) throws RedbasinException {
        //Reads in the pdf Template
        StringBuffer sb = new StringBuffer();
        try {
            //System.out.println("Number of pages = " + reader.getNumberOfPages());
            int numPages = reader.getNumberOfPages();
            for (int i = 1; i <= numPages; i++) {
                byte[] b = reader.getPageContent(i);
                PRTokeniser token = new PRTokeniser(b);
                //System.out.println("Page " + i);
                while (token.nextToken()) {
                    if (token.getTokenType() == 2) {
                        sb.append(token.getStringValue());
                        //System.out.print(token.getStringValue() + " ");
                    }
                }
                //System.out.println();
            }
            /*
            PdfStamper stamp = new PdfStamper(reader, new FileOutputStream("aNewPDF.pdf"));
            AcroFields form = stamp.getAcroFields();
            */
            /*
            Map fields = reader.getAcroFields().getFields();
            Iterator iter = fields.keySet().iterator();
            System.out.println("Printing fields" + fields.size());
            while (iter.hasNext()) {
                Object fobj = iter.next();
                Object fval = fields.get(fobj);
                System.out.println("Field = " + fobj.toString() + "Value = " + fobj.toString());
            }
             */

            //set the field values in the pdf form
            /*
            form.setField("fieldName", "aValue");
            stamp.setFormFlattening(true);
            stamp.close();
             * */
        } catch (Exception e) {
            throw new RedbasinException("Some pdf error occurred", e);
        }
        return sb.toString();
    }

    public static void main(String[] args) {
        String s = new PdfUtil().processText("some.pdf");
        System.out.println(s);
    }
}