java条形码识别代码 js条形码识别

用java程序如何读取图书条形码

一个比较好的2d条形码解析条码的工具库

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从ZXING 中剥离出来的

测试了一下，还可以，基本上清晰图片都可以识别

import java.awt.Frame;

import java.awt.Graphics2D;

import java.awt.Image;

import java.awt.MediaTracker;

import java.awt.image.BufferedImage;

import com.google.zxing.MonochromeBitmapSource;

import com.google.zxing.MultiFormatReader;

import com.google.zxing.Reader;

import com.google.zxing.ReaderException;

import com.google.zxing.Result;

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

public class CodeReader {

/**

* @param args

* @throws ReaderException

* @throws InterruptedException

*/

public static void main(String[] args) throws ReaderException, InterruptedException {

Reader reader = new MultiFormatReader();

String imgPath =

"test.jpg";

Image image=java.awt.Toolkit.getDefaultToolkit().getImage(imgPath);

BufferedImage myImage = CodeReader.imageToBufImage(image);

MonochromeBitmapSource source = new BufferedImageMonochromeBitmapSource(myImage);

Result result = reader.decode(source);

System.out.println(result.getText());

}

public static BufferedImage imageToBufImage(Image image) throws InterruptedException{

MediaTracker mt=new MediaTracker(new Frame());

mt.addImage(image,0);

mt.waitForID(0);

BufferedImage bufImage=new BufferedImage(image.getWidth(null),image.getHeight(null),BufferedImage.TYPE_INT_BGR);

Graphics2D g2d=bufImage.createGraphics();

g2d.drawImage(image,0,0,null);

return bufImage;

}

}

条形码java代码问题 菜鸟级问题

localJBarcode.setPainter(WideRatioCodedPainter.getInstance()); 输出条码

localJBarcode.setTextPainter(BaseLineTextPainter.getInstance()); 输出文本

求Java大神给个代码！计算验证条形码

public class Ean13Barcode {

private String code;

public Ean13Barcode(String code) {

super();

this.code = code;

}

public String encode() {

if (null == code) {

return "";

}

char[] codes = code.toCharArray();

int sum = 0;

for (int i = 0; i codes.length; i++) {

int num = codes[i] - '0';

if (isEven(num)) {

sum += num;

} else {

sum += num * 3;

}

}

int x = sum % 10;

return code + (x == 0 ? 0 : 10 - x);

}

private boolean isEven(int x) {

return x % 2 == 0;

}

public static void main(String[] args) {

System.out.println(new Ean13Barcode("692223361219").encode());

}

}