windows8运行zxing源码 生成与解码二维码 详解（含注释与图解可直接运行）

1 下载zxing2.1

2 本代码配置环境：eclipse、java1.6、windows8、zxing2.1

3 解压后将文件夹里面core/src下面的com文件夹导入到eclipse工程（工程可以自己建，如QrCode）中，图示如下：

注意：在源码中需要修改其编码配置为UTF-8，否则后面解码后面的文件中中文会乱码，修改图示如下：

4 TestEnDeCode.java源代码

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package test;     import java.awt.image.BufferedImage;       import java.io.File;       import java.io.IOException;       import java.util.Hashtable;       import java.util.Scanner;     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.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();               Scanner in = new Scanner(System.in);             System.out.println("编码内容：");             String str = in.next(); //            String str = "http://www.baidu.com";             String path = "D:/Qr_pics/test7.png";             t.encode(str, path);               t.decode(path);           }                  /*          * 编码：          * 1 将内容转换成二维矩阵          * 2 将该二维矩阵转换成图片          * */         public void encode(String str, String path) {               try {   //                String str = "http://www.baidu.com百度看看";// 二维码内容   //                String path = "D:/Qr_pics/test7.png"; //二维码图片生成 路径及名称                 BitMatrix byteMatrix;                   byteMatrix = new MultiFormatWriter().encode(new String(str.getBytes("UTF-8"),"UTF-8"), BarcodeFormat.QR_CODE, 800, 800); //将文字转换成二维矩阵，并设置矩阵大小，这里的矩阵大小就是后面生成的图片像素大小                  File file = new File(path);//新建矩阵文件                   MatrixToImageWriter.writeToFile(byteMatrix, "gif", file);//将矩阵文件转换成图片文件               } catch (Exception e) {                   e.printStackTrace();               }           }                  /*          * 解码：          * 1 将图片反解码为二维矩阵          * 2 将该二维矩阵解码为内容          * */         public void decode(String imgPath) {               try {                   Reader reader = new MultiFormatReader();   //                String imgPath = "D:/Qr_pics/test7.png";//获取即将被解码图片的路径                   File file = new File(imgPath);//获取该图片文件                   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();//将图片反解码为二维矩阵                       hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");                       result = new MultiFormatReader().decode(bitmap, hints);//将该二维矩阵解码成内容                       String resultStr = result.getText();                       System.out.println("\n解码结果：\n"+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());             }           }              }

5 运行结果：