1 第一步下载 zxing 2.2jar包

第二部

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.FileOutputStream;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;

import com.google.zxing.BinaryBitmap;

import com.google.zxing.LuminanceSource;

import com.google.zxing.MultiFormatReader;

import com.google.zxing.MultiFormatWriter;

import com.google.zxing.Result;

import com.google.zxing.client.j2se.BufferedImageLuminanceSource;

import com.google.zxing.client.j2se.MatrixToImageWriter;

import com.google.zxing.common.BitMatrix;

import com.google.zxing.common.HybridBinarizer;

public class ZxingEAN13Handler {

/**

* 条形码编码

*

* @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.writeToStream(bitMatrix, "png",

new FileOutputStream(imgPath));

} catch (Exception e) {

e.printStackTrace();

}

}

/**

* 解析条形码

*

* @param imgPath

* @return

*/

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 be 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;

}

public static void main(String[] args) {

String imgPath = "c://zxing_EAN13.png";

// 益达无糖口香糖的条形码

// String contents = "6923450657713";

String contents="6901236341292";

int width = 105, height = 50;

ZxingEAN13Handler handler = new ZxingEAN13Handler();

handler.encode(contents, width, height, imgPath);

System.out.println("Michael ,you have finished zxing EAN13 encode.");

}

}