Google Open source project zxing (two-dimensional barcode codec) simple to use (Java version) __java

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

Zxing (pronounced "zebra crossing") is a open-source, multi-format 1d/2d barcode image processing library implemented in Java, with ports to the other languages. We are on using the built-in camera on mobile phones to scan and decode on the barcodes, device without G with a server. However the project can be used to encode and decode barcodes on desktops and servers as.

The zxing Project is an Open-source project on barcode codec provided by Google Code.

to develop this project two times, first you need to download the Zxing1.7.zip source code in the source download list .

unpack the files and you'll see a lot of folders inside, including J2se, Android, J2me,c#, and so on. Let's take j2se as an example.

you need to use the core and J2SE folders inside. Then import into the project you created in Eclipse, in the following form:

The J2SE package provides the encoding and decoding. Java files, but because the writing is too complex, still not clear the source code of this Open-source project, or not recommended.

you created two Java files Encoder and decoder in the J2SE package. The code is as follows:

Package com.google.zxing.client.j2se;
Import Java.io.File;
Import java.io.IOException;

Import java.util.Hashtable;
Import Com.google.zxing.BarcodeFormat;
Import Com.google.zxing.EncodeHintType;
Import Com.google.zxing.MultiFormatWriter;
Import com.google.zxing.WriterException;

Import Com.google.zxing.common.BitMatrix; public class Encoder {public static void main (string[] args) {String contents = "Today, let's talk a little bit about Google Open source project--zxing (two-dimensional barcode coding

		Code) ";

		Hashtable<encodehinttype, string> hints = new Hashtable<encodehinttype, string> ();

		Hints.put (Encodehinttype.character_set, "GBK");

		Bitmatrix matrix = null;

		try {matrix = new Multiformatwriter (). Encode (contents, Barcodeformat.qr_code, MB, hints);

		catch (Writerexception e) {e.printstacktrace ();

		The file File = new file ("D://qrcodeimage.png");

		try {matrixtoimagewriter.writetofile (Matrix, PNG, file);

		catch (IOException e) {e.printstacktrace (); }

	}
}

Package com.google.zxing.client.j2se;
Import Java.awt.image.BufferedImage;
Import Java.io.File;
Import java.io.IOException;

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.NotFoundException;
Import Com.google.zxing.Result;

Import Com.google.zxing.common.HybridBinarizer;

		public class Decoder {public static void main (string[] args) {File file = new File ("D://qrcodeimage.png");

		BufferedImage bufferedimage = null;

		try {bufferedimage = imageio.read (file);

		catch (IOException e) {e.printstacktrace ();

		} luminancesource Source = new Bufferedimageluminancesource (bufferedimage);

		Binarybitmap bitmap = new Binarybitmap (new Hybridbinarizer (source));

		Hashtable<decodehinttype, string> hints = new Hashtable<decodehinttype, string> (); Hints.put (DecodehInttype.character_set, "GBK");

		result result = NULL;

		try {result = new Multiformatreader (). Decode (bitmap, hints);

		catch (Notfoundexception e) {e.printstacktrace ();

	} System.out.println (Result.tostring ());
 }

}

then you can start to edit and identify the bar code. Here is the support of Chinese.