java生成二維碼圖片和條形碼圖片

1.生成和解析二維碼圖片

若是是maven工程 在pom文件中加入依賴以下：

        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>javase</artifactId>
            <version>3.2.0</version>
        </dependency>

若非maven工程將對應jar包放到工程lib下面（javase-3.2.0.jar）

代碼以下：

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.util.Hashtable;
import java.util.Map;
 

import javax.imageio.ImageIO;
 

import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.EncodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Result;
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;
 
//二維碼生成器
public class ZxingHandler {
 
    //二維碼生成
    public void encode(String contents, int width, int height, String imgPath) {
        Map<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
        // 指定糾錯等級
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
        // 指定編碼格式
        hints.put(EncodeHintType.CHARACTER_SET, "GBK");
        try {
            BitMatrix bitMatrix = new MultiFormatWriter().encode(contents,
                    BarcodeFormat.QR_CODE, width, height, hints);
 
            MatrixToImageWriter.writeToStream(bitMatrix, "png",
                    new FileOutputStream(imgPath));
 
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    //二維碼解析
    public String decode(String imgPath) {
        BufferedImage image = null;
        Result result = null;
        try {
            image = ImageIO.read(new File(imgPath));
            if (image == null) {
                System.out.println("the decode image may be not exit.");
            }
            LuminanceSource source = new BufferedImageLuminanceSource(image);
            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
 
            Map<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
            hints.put(DecodeHintType.CHARACTER_SET, "GBK");
 
            result = new MultiFormatReader().decode(bitmap, hints);
            return result.getText();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
    //測試代碼
    public static void main( String[] args )
    {
        new ZxingHandler().encode("www.baidu.com", 500, 500, "img/123.png");
        System.out.println(new ZxingHandler().decode("img/123.png"));
    }
 
}

 

 

2.生成和解析條形碼

若是是maven工程 在pom文件中加入依賴以下：

        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>core</artifactId>
            <version>3.2.0</version>
        </dependency>

若非maven工程將對應jar包放到工程lib下面（core-3.2.0.jar）

代碼以下：

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
 
import javax.imageio.ImageIO;
 
import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Result;
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;
 
public class ZxingEAN13Handler {
    //條形碼生成
    public void encode(String contents, int width, int height, String imgPath) {
        int codeWidth = 3 + // start guard
                (7 * 6) + // left bars
                5 + // middle guard
                (7 * 6) + // right bars
                3; // end guard
        codeWidth = Math.max(codeWidth, width);
        try {
            BitMatrix bitMatrix = new MultiFormatWriter().encode(contents,
                    BarcodeFormat.EAN_13, codeWidth, height, null);
 
            MatrixToImageWriter.writeToStream(bitMatrix, "png",
                    new FileOutputStream(imgPath));
 
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
    //條形碼解析
    public String decode(String imgPath) {
        BufferedImage image = null;
        Result result = null;
        try {
            image = ImageIO.read(new File(imgPath));
            if (image == null) {
                System.out.println("the decode image may be not exit.");
            }
            LuminanceSource source = new BufferedImageLuminanceSource(image);
            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
 
            result = new MultiFormatReader().decode(bitmap, null);
            return result.getText();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
    //測試代碼
    public static void main(String[] args) {  
        String imgPath = "img/123.png";  
        String contents = "1234567890";  
        new ZxingEAN13Handler().encode(contents, 500, 500, imgPath);  
  
    }  
}