Java two-dimensional code, barcode, "zxing"

Zxing is an open source Java class Library used to parse barcodes and two-dimensional codes in multiple formats.

Official website: http://code.google.com/p/zxing/

Up to date, the latest version is 1.7, providing support for the following coding formats: Upc-a and UPC-E EAN-8 and EAN-13 code-code-code 128 QR code ITF codabar RSS-14 (all Vari Ants) Data Matrix PDF 417 (' alpha ' quality) Aztec (' alpha ' quality)

At the same time, the official website provides Android, CPP, C #, IPhone, J2ME, J2SE, JRuby, OBJC, RIM, Symbian and other applications of the class library, specific details can refer to the download of the source package.

The sample code needs to use the jar package Zxing-2.0.zip the Core.jar,javase.jar below.

Two-dimensional code coding, decoding

Import Java.io.File;

Import java.util.Hashtable;
Import Com.google.zxing.BarcodeFormat;
Import Com.google.zxing.EncodeHintType;
Import Com.google.zxing.MultiFormatWriter;
Import Com.google.zxing.client.j2se.MatrixToImageWriter;
Import Com.google.zxing.common.BitMatrix;

Import Com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;  /** * @blog http://sjsky.iteye.com * @author Michael/public class Zxingencoderhandler {/** * code * * @param Contents * @param Width * @param height * @param imgpath/public void encode (String contents, int width, int h
		Eight, String Imgpath) {hashtable<encodehinttype, object> hints = new Hashtable<encodehinttype, Object> ();
		Specifies the error correction level Hints.put (encodehinttype.error_correction, ERRORCORRECTIONLEVEL.L);
		Specifies the encoding format hints.put (encodehinttype.character_set, "GBK"); 

			try {Bitmatrix Bitmatrix = new Multiformatwriter (). Encode (contents, barcodeformat.qr_code, width, height, hints); Matrixtoimagewriter. WRItetofile (Bitmatrix, "PNG", New File (Imgpath));
		catch (Exception e) {e.printstacktrace ();
		}/** * @param args */public static void main (string[] args) {String Imgpath = "Zxing.png";
				String contents = "Hello Michael (Large), Welcome to zxing!"
		+ "\nmichael ' s blog [http://sjsky.iteye.com]" + "\nemail [sjsky007@gmail.com]" + "\ntwitter [@suncto]";
		int width = +, height = 300;
		Zxingencoderhandler handler = new Zxingencoderhandler ();

		Handler.encode (contents, width, height, imgpath);
	System.out.println ("Michael, you have finished zxing encode."); }
}

Import Java.awt.image.BufferedImage;  
Import Java.io.File;  
  
Import java.util.Hashtable;  
  
Import Javax.imageio.ImageIO;  
Import Com.google.zxing.BinaryBitmap;  
Import Com.google.zxing.DecodeHintType;  
Import Com.google.zxing.LuminanceSource;  
Import Com.google.zxing.MultiFormatReader;  
Import Com.google.zxing.Result;  
Import Com.google.zxing.client.j2se.BufferedImageLuminanceSource;  
  
Import Com.google.zxing.common.HybridBinarizer; /** * @blog http://sjsky.iteye.com * @author Michael */public class Zxingdecoderhandler {/** * @p Aram Imgpath * @return String */public string decode (string imgpath) {BufferedImage image =  
        Null  
        result result = NULL;  
            try {image = Imageio.read (new File (Imgpath));  
            if (image = = null) {SYSTEM.OUT.PRINTLN ("The decode image May is not exit."); } luminancesource Source = new BufferedimageluminancesOurce (image);  
  
            Binarybitmap bitmap = new Binarybitmap (new Hybridbinarizer (source));  
            Hashtable<decodehinttype, object> hints = new Hashtable<decodehinttype, object> ();  
  
            Hints.put (Decodehinttype.character_set, "GBK");  
            result = new Multiformatreader (). Decode (bitmap, hints);  
        return Result.gettext ();  
        catch (Exception e) {e.printstacktrace ();  
    return null; }/** * @param args */public static void main (string[] args) {String Imgpath = "Zxi  
        Ng.png ";  
        Zxingdecoderhandler handler = new Zxingdecoderhandler ();  
        String decodecontent = Handler.decode (Imgpath);  
        System.out.println ("Decode the contents as follows:");  
        System.out.println (decodecontent);  
  
    System.out.println ("Michael, you have finished zxing decode.");  }  
}

Barcode coding, decoding

Import Java.io.File;  
Import Com.google.zxing.BarcodeFormat;  
Import Com.google.zxing.MultiFormatWriter;  
Import Com.google.zxing.client.j2se.MatrixToImageWriter;  
  
Import Com.google.zxing.common.BitMatrix; 
     /** * @blog http://sjsky.iteye.com * @author Michael */public class Zxingean13encoderhandler {/**  * Code * @param contents * @param width * @param height * @param imgpath/public void  
                Encode (string contents, int width, int height, String imgpath) {int codewidth = 3 +//start Guard  
                (7 * 6) +//Left bars 5 +//middle Guard (7 * 6) +/Right bars 3;  
        End Guard Codewidth = Math.max (codewidth, width); try {Bitmatrix Bitmatrix = new Multiformatwriter (). Encode (contents, Barcodeformat.ean  
  
            _13, codewidth, height, null); Matrixtoimagewriter. WRitetofile (Bitmatrix, "PNG", New File (Imgpath));  
        catch (Exception e) {e.printstacktrace (); }/** * @param args */public static void main (string[] args) {String Imgpat  
        h = "Zxing_ean13.png";  
  
        Barcode String contents = "6923450657713" for sugar-free chewing gum;  
        int width = +, height = 50;  
        Zxingean13encoderhandler handler = new Zxingean13encoderhandler ();  
  
        Handler.encode (contents, width, height, imgpath);  
    System.out.println ("Michael, you have finished zxing EAN13 encode."); }  
}

Import Java.awt.image.BufferedImage;  
  
Import Java.io.File;  
  
Import Javax.imageio.ImageIO;  
Import Com.google.zxing.BinaryBitmap;  
Import Com.google.zxing.LuminanceSource;  
Import Com.google.zxing.MultiFormatReader;  
Import Com.google.zxing.Result;  
Import Com.google.zxing.client.j2se.BufferedImageLuminanceSource;  
  
Import Com.google.zxing.common.HybridBinarizer; 
     /** * @blog http://sjsky.iteye.com * @author Michael */public class Zxingean13decoderhandler {/** * @param imgpath * @return String */public string decode (string imgpath) {bufferedimage ima  
        GE = null;  
        result result = NULL;  
            try {image = Imageio.read (new File (Imgpath));  
            if (image = = null) {SYSTEM.OUT.PRINTLN ("The decode image May is not exit.");  
            } luminancesource Source = new Bufferedimageluminancesource (image); Binarybitmap bitmap = new Binarybitmap (New Hybridbinarizer (source));  
            result = new Multiformatreader (). Decode (bitmap, NULL);  
        return Result.gettext ();  
        catch (Exception e) {e.printstacktrace ();  
    return null; }/** * @param args */public static void main (string[] args) {String Imgpath = "Zxi  
        Ng_ean13.png ";  
        Zxingean13decoderhandler handler = new Zxingean13decoderhandler ();  
        String decodecontent = Handler.decode (Imgpath);  
        System.out.println ("Decode the contents as follows:");  
        System.out.println (decodecontent);  
  
    System.out.println ("Michael, you have finished zxing EAN-13 decode.");  }  
}