条形码和二维码

Posted 2021-03-13 cstdio1

代码出处：https://www.icourse163.org/learn/ECNU-1003718005#/learn/content?type=detail&id=1211641386&cid=1214440862

Pom文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.zyb</groupId>
    <artifactId>BarcodeTest</artifactId>
    <version>1.0-SNAPSHOT</version>
<dependencies>
    <dependency>
        <groupId>com.google.zxing</groupId>
        <artifactId>core</artifactId>
        <version>3.3.3</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.google.zxing/javase -->
    <dependency>
        <groupId>com.google.zxing</groupId>
        <artifactId>javase</artifactId>
        <version>3.3.3</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/net.sf.barcode4j/barcode4j -->
    <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>
</dependencies>

</project>

条形码的解析和生成(Goole的第三方库)

package zxing;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
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.FileOutputStream;
import java.util.HashMap;
import java.util.Map;

public class BarCodeTest {
    /**
     * generateCode 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格式进行编码生成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 (WriterException e) {
            e.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 (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * readCode 读取一张一维码图片
     * @param file 一维码图片名字
     */
    public static void readCode(File file){
        try {
            BufferedImage image = ImageIO.read(file);
            if (image == null) {
                return;
            }
            LuminanceSource source = new BufferedImageLuminanceSource(image);
            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 result = new MultiFormatReader().decode(bitmap, hints);
            System.out.println("条形码内容: "+result.getText());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) throws Exception {
        //generateCode(new File("1dcode.png"), "you are a pig", 500, 250);
        readCode(new File("1dcode.png"));
    }
}

二维码生成和解析(Goole的第三方库)

package 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 com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.Map;

public class QRCodeTest {
    /*
     * 定义二维码的宽高
     */
    private static int WIDTH = 300;
    private static int HEIGHT = 300;
    private static String FORMAT = "png";//二维码格式

    //生成二维码
    public static void generateQRCode(File file, String content) {
        //定义二维码参数
        Map<EncodeHintType, Object> hints = new HashMap<>();

        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");//设置编码
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);//设置容错等级
        hints.put(EncodeHintType.MARGIN, 2);//设置边距默认是5

        try {
            BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, WIDTH, HEIGHT, hints);
            Path path = file.toPath();
            MatrixToImageWriter.writeToPath(bitMatrix, FORMAT, path);//写到指定路径下

        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    //读取二维码
    public static void readQrCode(File file) {
        MultiFormatReader reader = new MultiFormatReader();
        try {
            BufferedImage image = ImageIO.read(file);
            BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image)));
            Map<DecodeHintType, Object> hints = new HashMap<>();
            hints.put(DecodeHintType.CHARACTER_SET, "utf-8");//设置编码
            Result result = reader.decode(binaryBitmap, hints);
            System.out.println("解析结果:" + result.toString());
            System.out.println("二维码格式:" + result.getBarcodeFormat());
            System.out.println("二维码文本内容:" + result.getText());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        generateQRCode(new File("2dcode.png"), "https://www.baidu.com");
       // readQrCode(new File("2dcode.png"));
        //readQrCode(new File("2dcode.jpg"));
    }
}

条形码生成和解析(BarCode4j的第三方库)

package barcode4j;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;

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;


public class BarCodeTest {

    public static void main(String[] args) {
        String msg = "123456789012";
        String path = "1dcode.png";
        generateFile(msg, path);
    }

    public static void generateFile(String msg, String path) {
        File file = new File(path);
        try {
            Code39Bean bean = new Code39Bean();
            //EAN13Bean bean = new EAN13Bean();

            // dpi精度
            final int dpi = 150;
            // module宽度
            //bean.setModuleWidth(0.2);
            final double width = UnitConv.in2mm(2.0f / dpi);
            bean.setWideFactor(3);
            bean.setModuleWidth(width);
            bean.doQuietZone(false);

            String format = "image/png";
            // 输出到流
            BitmapCanvasProvider canvas = new BitmapCanvasProvider(new FileOutputStream(file), format, dpi,
                    BufferedImage.TYPE_BYTE_BINARY, false, 0);

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

            // 结束绘制
            canvas.finish();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

二维码生成和解析(BarCode4j的第三方库)

package barcode4j;

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.DefaultConfiguration;
import org.krysalis.barcode4j.BarcodeGenerator;
import org.krysalis.barcode4j.BarcodeUtil;
import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
import org.krysalis.barcode4j.tools.MimeTypes;

public class DataMatrixCodeTest {
    
    public static void main(String[] args) throws Exception {

        BarcodeUtil util = BarcodeUtil.getInstance();
        BarcodeGenerator gen = util.createBarcodeGenerator(buildCfg("datamatrix"));

        OutputStream fout = new FileOutputStream("2dcode.png");
        int resolution = 300;
        BitmapCanvasProvider canvas = new BitmapCanvasProvider(fout, "image/png", resolution,
                BufferedImage.TYPE_BYTE_BINARY, false, 0);

        gen.generateBarcode(canvas, "be the coder");
        canvas.finish();
    }

    private static Configuration buildCfg(String type) {
        DefaultConfiguration cfg = new DefaultConfiguration("barcode");

        // Bar code type
        DefaultConfiguration child = new DefaultConfiguration(type);
        cfg.addChild(child);

        // Human readable text position
        DefaultConfiguration attr = new DefaultConfiguration("human-readable");
//      DefaultConfiguration subAttr = new DefaultConfiguration("placement");
//      subAttr.setValue("bottom");
//      attr.addChild(subAttr);
//      child.addChild(attr);
//      datamatrix code has no human-readable part
//      see http://barcode4j.sourceforge.net/2.1/symbol-datamatrix.html
        
        attr = new DefaultConfiguration("height");
        attr.setValue(50);
        child.addChild(attr);
        attr = new DefaultConfiguration("module-width");
        attr.setValue("0.6");
        child.addChild(attr);
        return cfg;
    }
}