用com.google.zxing生成、解析二维码

 在http://code.google.com/p/zxing/downloads/list下载zxing压缩包（我用的Zxing-1.5），解压后将core/src和javase/src中的com文件夹整体复制到你的java工程中，这两个包里面包含java所用的java源码，

代码如下：

 

package com.easyoa.test;

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.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.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.ByteMatrix;
import com.google.zxing.common.HybridBinarizer;

public class Test {
   private static final int BLACK = 0xff000000;
   private static final int WHITE = 0xFFFFFFFF;
 /**
  * @param args
  */
 public static void main(String[] args) {
  Test test=new Test();
  test.encode();
 test.decode();
 }
 //编码
 /**
  * 在编码时需要将com.google.zxing.qrcode.encoder.Encoder.java中的
  *  static final String DEFAULT_BYTE_MODE_ENCODING = "ISO8859-1";修改为UTF-8，否则中文编译后解析不了
  */
 public void encode(){
  try { 
   String str = "姓名：张三，性别：男，年龄：25，籍贯：中国北京，";// 二维码内容 
   String path = "D://test.png"; 
   ByteMatrix byteMatrix; 
   byteMatrix= new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, 200, 200);
   File file = new File(path); 
      writeToFile(byteMatrix, "png", file); 
  } catch (Exception e) { 
   e.printStackTrace(); 
  }
 }
 public static void writeToFile(ByteMatrix matrix, String format, File file)
 throws IOException {
BufferedImage image = toBufferedImage(matrix);
ImageIO.write(image, format, file);
}
 public static BufferedImage toBufferedImage(ByteMatrix matrix) {
     int width = matrix.getWidth();
     int height = matrix.getHeight();
     BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
     for (int x = 0; x < width; x++) {
       for (int y = 0; y < height; y++) {
         image.setRGB(x, y, matrix.get(x, y) == 0 ? BLACK:WHITE);
       }
     }
     return image;
   }
 //解码
 public void decode(){
  try{
   Reader reader = new MultiFormatReader(); 
   String imgPath = "D://test.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"); 
    //解码设置编码方式为：utf-8，
    result = new MultiFormatReader().decode(bitmap,hints); 
    String resultStr = result.getText(); 
    System.out.println("解析后内容："+resultStr);

   } catch (IOException ioe) { 
    System.out.println(ioe.toString()); 
   } catch (ReaderException re) { 
    System.out.println(re.toString()); 
   }

  }catch(Exception ex){
   System.out.println(ex.toString());
  }
 }

}

好了，运行一下是不是很简单？

生成后的二维码：

解码后：

解析后内容：姓名：张三，性别：男，年龄：25，籍贯：中国北京，

欢迎朋友留言交流；