一维条码，生成格式Code128码

Posted 2020-11-29 boke-ly

<dependency>

<groupId>net.sf.barcode4j</groupId>

<artifactId>barcode4j-light</artifactId>

<version>2.0</version>

</dependency>

 

package test;

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.krysalis.barcode4j.HumanReadablePlacement;
import org.krysalis.barcode4j.impl.code128.Code128Bean;
import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
import org.krysalis.barcode4j.tools.UnitConv;
public class Demo_01 {
		/**
	     * 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 (ous == null) {
	            return;
	        }
	 
	        Code128Bean bean = new Code128Bean();//128格式
	        // 精细度
	        final int dpi = 128;
	        // module宽度
	        final double moduleWidth = UnitConv.in2mm(2.0f / dpi);
	        // 配置对象
	        bean.setModuleWidth(moduleWidth);
	        //((Code39Bean) bean).setWideFactor(3);
	        bean.doQuietZone(true);//保留两边空白区
	        bean.setMsgPosition(HumanReadablePlacement.HRP_NONE);//不显示数值
	        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 = "1023888888888883";
	        String path = "D:/barcode.png";
	        generateFile(msg, path);
	        System.out.println("条形码生成=="+generateFile(msg, path));
	    }

}