Java 创建/识别条形码

项目刚好需要用到就记录一下

-- 依赖

<!-- 条形码生成 -->
<dependency>
    <groupId>net.sf.barcode4j</groupId>
    <artifactId>barcode4j</artifactId>
    <version>2.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.avalon.framework/avalon-framework-api -->
<dependency>
    <groupId>org.apache.avalon.framework</groupId>
    <artifactId>avalon-framework-api</artifactId>
    <version>4.3.1</version>
</dependency>

-- 工具类

package com.example.mybatis_plus;

import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.avalon.framework.configuration.DefaultConfiguration;
import org.apache.commons.io.FileUtils;
import org.krysalis.barcode4j.BarcodeException;
import org.krysalis.barcode4j.BarcodeGenerator;
import org.krysalis.barcode4j.BarcodeUtil;
import org.krysalis.barcode4j.HumanReadablePlacement;
import org.krysalis.barcode4j.impl.code128.Code128Bean;
import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;

import java.awt.image.BufferedImage;
import java.io.*;

/**
 * 条形码工具类
 */
public class BarCodeUtils {

/**************************** 条形码  ********************************/
    /**
     * 生成code128条形码
     *
     * @param message       要生成的文本
     * @param withQuietZone 是否两边留白
     * @param hideText      隐藏可读文本
     * @param filePath      文件生成的路径
     */
    public static void generateBarCode128(String message, boolean withQuietZone, boolean hideText, String filePath) {
        Code128Bean bean = new Code128Bean();
        // 分辨率
        int dpi = 512;
        // 设置两侧是否留白
        bean.doQuietZone(withQuietZone);

        // 设置条形码高度和宽度(不填就是默认的)
//        bean.setBarHeight((double) ObjectUtils.defaultIfNull(height, 9.0D));
//        if (width != null) {
//            bean.setModuleWidth(width);
//        }
        // 设置文本位置（包括是否显示）
        if (hideText) {
            bean.setMsgPosition(HumanReadablePlacement.HRP_NONE);
        }
        // 设置图片类型
        String format = "image/png";
        ByteArrayOutputStream ous = new ByteArrayOutputStream();
        BitmapCanvasProvider canvas = new BitmapCanvasProvider(ous, format, dpi,
                BufferedImage.TYPE_BYTE_BINARY, false, 0);

        // 生产条形码
        bean.generateBarcode(canvas, message);
        try {
            canvas.finish();
            //字节码
            byte[] bytes = ous.toByteArray();
            FileUtils.writeByteArrayToFile(new File(filePath), bytes);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**************************** 二维码  ********************************/
    /**
     * 生成二维码
     * @param message       要生成的文本
     * @param filePath      文件生成的路径
     */
    public static void genQRCode(String message, String filePath){

        try {
            BarcodeUtil util = BarcodeUtil.getInstance();
            DefaultConfiguration cfg = new DefaultConfiguration("barcode");
            // Bar code type
            DefaultConfiguration child = new DefaultConfiguration("datamatrix");
            cfg.addChild(child);

// Human readable text position
            DefaultConfiguration attr = new DefaultConfiguration("human-readable");
//        //设置高度(无效果)
//        attr = new DefaultConfiguration("height");
//        attr.setValue(50);
//        child.addChild(attr);
            //设置二维码宽度
            attr = new DefaultConfiguration("module-width");
            attr.setValue("2.0");
            child.addChild(attr);
            BarcodeGenerator gen = util.createBarcodeGenerator(cfg);
            //分辨率
            int resolution = 300;
            // 设置图片类型
            String format = "image/png";
            ByteArrayOutputStream ous = new ByteArrayOutputStream();
            BitmapCanvasProvider canvas = new BitmapCanvasProvider(ous, format, resolution,
                    BufferedImage.TYPE_BYTE_BINARY, false, 0);

            gen.generateBarcode(canvas, message);
            canvas.finish();
            //字节码
            byte[] bytes = ous.toByteArray();
            FileUtils.writeByteArrayToFile(new File(filePath), bytes);
        } catch (ConfigurationException e) {
            e.printStackTrace();
        } catch (BarcodeException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

-- 测试方法

package com.example.mybatis_plus;

public class demo1 {
    public static void main(String[] args) {

        BarCodeUtils.generateBarCode128("SP0012", true, false,"D:\\aaab.jpg");
    }
}

--文档
https://www.cnblogs.com/Yesi/p/11527369.html
官方地址:http://barcode4j.sourceforge.net/
嵌入到 Java 应用程序中（使用 JavaBean API） (sourceforge.net)
https://barcode4j.sourceforge.net/2.1/embedding-bean.html

Zxing 代码示例
pom.xml引入

<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.3.3</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.3.3</version>
</dependency>

package com.torey.javaAdvanced.mooc4.zxing;

import com.google.zxing.*;
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;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

/**
* @ClassName：BarCodeTest
* @Description：
* @author: Torey
*/
public class BarCodeTest {
/**
* 根据code生成相应的一维码
* @param file 一维码目标文件
* @param code 一维码内容
* @param width 图片宽度
* @param height 图片高度
*/
public static void generateCode(File file, String code,int width,int height){
//定义位图矩阵BitMatrix
BitMatrix matrix=null;
try{
//使用code_128格式进行表面生成100*25的条形码
MultiFormatWriter writer = new MultiFormatWriter();
matrix= writer.encode(code,BarcodeFormat.CODE_128,width,height,null);
// matrix= writer.encode(code,BarcodeFormat.EAN_13,width,height,null);
}catch (Exception ex){ex.printStackTrace();}
//将位图矩阵BitMatrix保存为图片
try(FileOutputStream outStream =new FileOutputStream(file)){
ImageIO.write(MatrixToImageWriter.toBufferedImage(matrix),"png",outStream);
outStream.flush();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args){
generateCode(new File("1dcode.png"),"123456789012",500,250);
readCode(new File("1dcode.png"));
}

/**
* 解析一维码
* @param file
*/
private static void readCode(File file) {
try{
BufferedImage read = ImageIO.read(file);
if (null==read) {
return;
}
BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(read);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
Map<DecodeHintType,Object> hints=new HashMap<>();
hints.put(DecodeHintType.CHARACTER_SET,"GBK");
hints.put(DecodeHintType.PURE_BARCODE,Boolean.TRUE);
hints.put(DecodeHintType.TRY_HARDER,Boolean.TRUE);

Result decode = new MultiFormatReader().decode(bitmap, hints);
System.out.println("条形码的内容是："+decode.getText());
}catch (Exception ex){}
}
}