Java二维码生成与解码工具Zxing使用

 
 1 package com.csii.zxing.test;

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

import javax.imageio.ImageIO; 

import org.junit.Test;  
import com.google.zxing.BarcodeFormat;
import com.google.zxing.Binarizer;
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.NotFoundException;
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;

public class ZxingTest {
    @SuppressWarnings("deprecation")
    @Test
    public void testEncoder()
    {
            //二维码内容
            String text = "http://blog.csdn.net/rongbo_j";   
            int width = 200;   //二维码图片宽度
            int height = 200;   //高度
            String format = "gif";  //图片格式

            Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();  
            hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
            BitMatrix bitMatrix = null;
            try {
                //编码
                bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints);
            } catch (WriterException e1) { 
                e1.printStackTrace();
            }    
            File outputFile = new File("src/1.gif");  
            try {
                //输出二维码图片
                MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile);
            } catch (IOException e) { 
                e.printStackTrace();
            }

    }
    @Test
    public void testDecoder() throws NotFoundException
    { 
            //二维码图片路径
            String path = this.getClass().getClassLoader().getResource("1.gif").getPath();
            File imageFile = new File(path);
            BufferedImage image = null;
            try {
                image = ImageIO.read(imageFile);
                 LuminanceSource source = new BufferedImageLuminanceSource(image);  
                 Binarizer binarizer = new HybridBinarizer(source);  
                 BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
                 Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>();
                 hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");  
                 //解码获取二维码中信息
                 Result result = new MultiFormatReader().decode(binaryBitmap, hints);  
                 System.out.println(result.getText());
            } catch (IOException e) { 
                e.printStackTrace();
            } 
    }
}

package com.csii.zxing.test; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.HashMap; import java.util.Hashtable; import java.util.Map; import javax.imageio.ImageIO; import org.junit.Test; import com.google.zxing.BarcodeFormat; import com.google.zxing.Binarizer; 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.NotFoundException; 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; public class ZxingTest { @SuppressWarnings("deprecation") @Test public void testEncoder() { //二维码内容 String text = "http://blog.csdn.net/rongbo_j"; int width = 200; //二维码图片宽度 int height = 200; //高度 String format = "gif"; //图片格式 Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>(); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); BitMatrix bitMatrix = null; try { //编码 bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints); } catch (WriterException e1) { e1.printStackTrace(); } File outputFile = new File("src/1.gif"); try { //输出二维码图片 MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile); } catch (IOException e) { e.printStackTrace(); } } @Test public void testDecoder() throws NotFoundException { //二维码图片路径 String path = this.getClass().getClassLoader().getResource("1.gif").getPath(); File imageFile = new File(path); BufferedImage image = null; try { image = ImageIO.read(imageFile); LuminanceSource source = new BufferedImageLuminanceSource(image); Binarizer binarizer = new HybridBinarizer(source); BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer); Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>(); hints.put(DecodeHintType.CHARACTER_SET, "UTF-8"); //解码获取二维码中信息 Result result = new MultiFormatReader().decode(binaryBitmap, hints); System.out.println(result.getText()); } catch (IOException e) { e.printStackTrace(); } } }