java 生成条形码

package com.sun.erwei;

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.commons.lang3.StringUtils;
import org.krysalis.barcode4j.impl.code128.Code128Bean;
import org.krysalis.barcode4j.impl.code39.Code39Bean;
import org.krysalis.barcode4j.impl.upcean.EAN13Bean;
import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
import org.krysalis.barcode4j.tools.UnitConv;

/**
* 条形码工具类
*
* @author
* @createDate
*
*/
public class BarcodeUtil {

/**
* 生成文件
*
* @param msg
* @param path
* @return
*/
public static File generateFile(String msg, String path) {
File file = new File(path);
try {
generate(msg, new FileOutputStream(file));
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
}
return file;
}

/**
* 生成字节
*
* @param msg
* @return
*/
public static byte[] generate(String msg) {
ByteArrayOutputStream ous = new ByteArrayOutputStream();
generate(msg, ous);
return ous.toByteArray();
}

/**
* 生成到流
*
* @param msg
* @param ous
*/
public static void generate(String msg, OutputStream ous) {
if (StringUtils.isEmpty(msg) || ous == null) {
return;
}

EAN13Bean bean=new EAN13Bean();//条形码类型

// Code39Bean bean = new Code39Bean();

// 精细度
final int dpi = 150;
// module宽度
final double moduleWidth = UnitConv.in2mm(2.0f / dpi);

// 配置对象
bean.setModuleWidth(moduleWidth);
//bean.setWideFactor(3);
bean.doQuietZone(false);


String format = "image/png";
try {

// 输出到流
BitmapCanvasProvider canvas = new BitmapCanvasProvider(ous, format, dpi,
BufferedImage.TYPE_BYTE_BINARY, false, 0);

// 生成条形码
bean.generateBarcode(canvas, msg);

// 结束绘制
canvas.finish();
} catch (IOException e) {
throw new RuntimeException(e);
}
}

public static void main(String[] args) {
String msg = "123456789123";
String path = "C:/Users/xsp034/Desktop/barcode.png";
generateFile(msg, path);
}
}

需要用到barcode4j.jar barcode4j-light.jar common-lang3.jar