zxing二维码的生成和解码 j2se

本文转自：

http://andilyliao.iteye.com/blog/1102546

适用于j2se的方法
例子:

package snippet;



import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import java.util.Hashtable;



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.Reader;

import com.google.zxing.ReaderException;

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 TestEnDeCode {  

  

    /** 

     *  

     */  

    public TestEnDeCode() {  

        // TODO Auto-generated constructor stub  

    }  

  

    /** 

     * @param args 

     */  

    public static void main(String[] args) {  

        TestEnDeCode t=new TestEnDeCode();  

        t.encode();  

        t.decode();

    }  

  

    // 编码  

    public void encode() {  

        try {  

            String str = "小猪";// 二维码内容  

            String path = "hwy.png";  

            BitMatrix byteMatrix;  

            Hashtable hints = new Hashtable();  

            hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");  

            byteMatrix = new MultiFormatWriter().encode(str,  

                    BarcodeFormat.QR_CODE, 200, 200,hints);  

            File file = new File(path);  

              

            MatrixToImageWriter.writeToFile(byteMatrix, "png", file);  

        } catch (Exception e) {  

            e.printStackTrace();  

        }  

    }  

  

    // 解码  

    public void decode() {  

        try {  

            Reader reader = new MultiFormatReader();  

            String imgPath = "hwy.png";  

            File file = new File(imgPath);  

            BufferedImage image;  

            try {  

                image = ImageIO.read(file);  

                if (image == null) {  

                    System.out.println("Could not decode image");  

                }  

                LuminanceSource source = new BufferedImageLuminanceSource(image);  

                BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(  

                        source));  

                Result result;  

                Hashtable hints = new Hashtable();  

                hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");  

                result = new MultiFormatReader().decode(bitmap, hints);  

                String resultStr = result.getText();  

                System.out.println(resultStr);  

  

            } catch (IOException ioe) {  

                System.out.println(ioe.toString());  

            } catch (ReaderException re) {  

                System.out.println(re.toString());  

            }  

  

        } catch (Exception ex) {  

  

        }  

    }  

  

} 

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