利用barcode4j生成條形碼

 
package k.barcode;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import org.krysalis.barcode4j.impl.code39.Code39Bean;
import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
import org.krysalis.barcode4j.tools.UnitConv;
public class Barcode {

public static void main(String[] args) {
    try {
        //Create the barcode bean
        Code39Bean bean = new Code39Bean();

        final int dpi = 150;

        //Configure the barcode generator
        bean.setModuleWidth(UnitConv.in2mm(1.0f / dpi)); //makes the narrow bar 
                                                         //width exactly one pixel
        bean.setWideFactor(3);
        bean.doQuietZone(false);

        //Open output file
        File outputFile = new File("d:\\\\out.png");
        OutputStream out = new FileOutputStream(outputFile);
        try {
            //Set up the canvas provider for monochrome JPEG output 
            BitmapCanvasProvider canvas = new BitmapCanvasProvider(
                    out, "image/png", dpi, BufferedImage.TYPE_BYTE_BINARY, false, 0);

            //Generate the barcode
            bean.generateBarcode(canvas, "A123456");

            //Signal end of generation
            canvas.finish();
        } finally {
            out.close();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}


}
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