Generate Barcode in ADF 12C

Generating Bar code in ADF12c

In this tutorial I'll show you learn how to generate Bar code Image for any Number(Bar code) in ADF 12c.
we will create a fusion web application add one jar file barcode4j-2.1.jar  to project class path, which has Main class to generate bar code.

• Here I have generated a ImageServlet.Java class inside the barcode package and written a small code like.

package barcode;

import javax.servlet.ServletConfig;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.awt.image.BufferedImage;

import java.io.IOException;

import java.io.OutputStream;

import java.io.FileOutputStream;

import java.io.ByteArrayOutputStream;

import javax.imageio.ImageIO;

import javax.servlet.ServletException;

import org.krysalis.barcode4j.impl.code39.Code39Bean;

import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;

import org.krysalis.barcode4j.tools.UnitConv;

public class ImageServlet extends HttpServlet {

    private static final String CONTENT_TYPE = 

        "image/x-png; charset=utf-8";

    final int dpi = 150;

    /**

     * @param config

     * @throws ServletException

     */

    public void init(ServletConfig config) throws ServletException {

        super.init(config);

    }

    /**

     * @param request

     * @param response

     * @throws ServletException

     * @throws IOException

     */

    public void doGet(HttpServletRequest request, 

                      HttpServletResponse response) throws ServletException, 

          

                                                              IOException {

             try {

         response.setContentType(CONTENT_TYPE);

         String barcodeText = request.getParameter("barcodeText").trim();

         OutputStream os = response.getOutputStream();

          if (barcodeText.isEmpty()) 

              return;

          Code39Bean bean = new Code39Bean();

        

          bean.setModuleWidth(UnitConv.in2mm(1.0f / dpi)); 

          bean.setWideFactor(3);

          bean.doQuietZone(false);

            BitmapCanvasProvider canvas = new BitmapCanvasProvider(

                     null, "image/x-png", dpi, BufferedImage.TYPE_BYTE_BINARY, false, 0);

              bean.generateBarcode(canvas,barcodeText);

            canvas.finish();

                    ByteArrayOutputStream baos = new ByteArrayOutputStream();

                    ImageIO.write(  canvas.getBufferedImage(), "png", baos );

                    baos.flush();

                    byte[] imageInByte = baos.toByteArray();

                    baos.close();

                    for(int i=0;i<imageInByte.length;i++)

                    os.write((int)imageInByte[i]);   

                os.close();

          

        }  catch (Exception e) {

             System.out.println("calll1 "+e.toString());

         e.printStackTrace();          

         }

         

    }

}

• I have mapped sevlet class in web.xml 

                                            

• Here  I have to generated a bar code of Amit450.

                                           

• Download sample application that generate bar code with Oracle ADF 12c Download Sample ADF Application 
• Unzip and Run this application