package com.busp.web.manager.util; import java.awt.image.BufferedImage; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import org.apache.commons.lang.StringUtils; import org.krysalis.barcode4j.impl.code39.Code39Bean; import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider; import org.krysalis.barcode4j.tools.UnitConv; /** * 条形码工具类*/ 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; } Code39Bean bean = new Code39Bean(); // 精细度 final int dpi = 150; // module宽度 final double moduleWidth = UnitConv.in2mm(1.0f / dpi); System.out.println(moduleWidth); // 配置对象 bean.setModuleWidth(moduleWidth );//设置窄模块宽度 bean.setWideFactor(3);//设置宽条比窄条宽的系数。 bean.doQuietZone(true);//设置是否应该包括或不包括空白区域 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 = "156464648"; String path = "D:\barcode.png"; File generateFile = generateFile(msg, path); System.out.println("=======完成========"); } }