生成二维码

package com.wangku.was.qe;

import java.awt.image.BufferedImage;  
import java.io.File;  
import java.io.IOException;  
import java.nio.file.FileSystems;  
import java.nio.file.Path;  
import java.util.HashMap;  
import java.util.Map;  
  
import javax.imageio.ImageIO;  
  
import org.junit.Test;  
  
import com.alibaba.fastjson.JSONObject;  
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;
/**
 * @ClassName: QRCodeTest  
 * @author zhangmeijie 
 * @date 2015-6-19 下午1:43:05
 * @exception
 * @since 1.0
 */
public class QRCodeTest {
	/** 
     * 生成图像 
     *  
     * @throws WriterException 
     * @throws IOException 
     */  
    @Test  
    public void testEncode() throws WriterException, IOException {  
        String filePath = "F://";  
        String fileName = "zxing.png";  
        JSONObject json = new JSONObject();  
//        json.put(  
//                "zxing",  
//                "http://kesun-shy.iteye.com/blog/2154169");  
//        json.put("author", "shihy");  
//        String content = json.toJSONString();// 内容  
        String content = "http://kesun-shy.iteye.com/blog/2154169";
        int width = 200; // 图像宽度  
        int height = 200; // 图像高度  
        String format = "png";// 图像类型  
        Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();  
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");  
        BitMatrix bitMatrix = new MultiFormatWriter().encode(content,  
                BarcodeFormat.QR_CODE, width, height, hints);// 生成矩阵  
        Path path = FileSystems.getDefault().getPath(filePath, fileName);  
        MatrixToImageWriter.writeToPath(bitMatrix, format, path);// 输出图像  
        System.out.println("输出成功.");  
    }  
  
    /** 
     * 解析图像 
     */  
    @Test  
    public void testDecode() {  
        String filePath = "F://zxing.png";  
        BufferedImage image;  
        try {  
            image = ImageIO.read(new File(filePath));  
            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");  
            Result result = new MultiFormatReader().decode(binaryBitmap, hints);// 对图像进行解码  
            System.out.println(result.getText());
//            JSONObject content = JSONObject.parseObject(result.getText());  
//            System.out.println("图片中内容：  ");  
//            System.out.println("author： " + content.getString("author"));  
//            System.out.println("zxing：  " + content.getString("zxing"));  
//            System.out.println("图片中格式：  ");  
//            System.out.println("encode： " + result.getBarcodeFormat());  
        } catch (IOException e) {  
            e.printStackTrace();  
        } catch (NotFoundException e) {  
            e.printStackTrace();  
        }  
    }  
}