java 二維碼

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在http://www.ostools.net/qr看到了一個產生二維碼的工具，於是就產生了一個想法：

為什麼自己不做一個二維碼的產生和解析工具呢？花了一個多鐘的時間，嘿嘿，就做出來啦...

先來看看吧：

CODE_QR:                                            

 CODE_128:        

PDF_417:

二維碼的意思是：

下面是操作步驟：

一：下載zxing的壓縮包：

可以到這裡下載：http://code.google.com/p/zxing/downloads/list

ZXing-2.1.zip：http://code.google.com/p/zxing/downloads/detail?name=ZXing-2.1.zip&can=2&q=

得到：

zxing-2.1\core\core.jar

zxing-2.1\javase\javase.jar

二：把他添加進入你的項目的裡面：

/QRCodes/src/com/b510/qrcode/QRCode.java

 

  1 /**  2  *   3  */  4 package com.b510.qrcode;  5   6 import java.awt.image.BufferedImage;  7 import java.io.File;  8 import java.io.IOException;  9 import java.util.Hashtable; 10 import java.util.Map; 11  12 import javax.imageio.ImageIO; 13  14 import com.google.zxing.BarcodeFormat; 15 import com.google.zxing.BinaryBitmap; 16 import com.google.zxing.DecodeHintType; 17 import com.google.zxing.EncodeHintType; 18 import com.google.zxing.LuminanceSource; 19 import com.google.zxing.MultiFormatReader; 20 import com.google.zxing.MultiFormatWriter; 21 import com.google.zxing.ReaderException; 22 import com.google.zxing.Result; 23 import com.google.zxing.Writer; 24 import com.google.zxing.WriterException; 25 import com.google.zxing.client.j2se.BufferedImageLuminanceSource; 26 import com.google.zxing.common.BitMatrix; 27 import com.google.zxing.common.HybridBinarizer; 28 import com.google.zxing.oned.CodaBarWriter; 29 import com.google.zxing.oned.Code128Writer; 30 import com.google.zxing.oned.Code39Writer; 31 import com.google.zxing.oned.EAN13Writer; 32 import com.google.zxing.oned.EAN8Writer; 33 import com.google.zxing.oned.ITFWriter; 34 import com.google.zxing.oned.UPCAWriter; 35 import com.google.zxing.pdf417.encoder.PDF417Writer; 36 import com.google.zxing.qrcode.QRCodeWriter; 37  38 /** 39  * 利用zxing開源工具產生二維碼QRCode 40  *  41  * @date 2012-10-26 42  * @author xhw 43  *  44  */ 45 public class QRCode { 46     private static final int BLACK = 0xff000000; 47     private static final int WHITE = 0xFFFFFFFF; 48  49     /** 50      * @param args 51      */ 52     public static void main(String[] args) { 53         QRCode test = new QRCode(); 54         File file = new File("C://test.png"); 55         /** 56          * 在com.google.zxing.MultiFormatWriter類中，定義了一些我們不知道的碼,二維碼只是其中的一種<br> 57          * public BitMatrix encode(String contents, 58                           BarcodeFormat format, 59                           int width, int height, 60                           Map<EncodeHintType,?> hints) throws WriterException { 61             Writer writer; 62             switch (format) { 63               case EAN_8: 64                 writer = new EAN8Writer(); 65                 break; 66               case EAN_13: 67                 writer = new EAN13Writer(); 68                 break; 69               case UPC_A: 70                 writer = new UPCAWriter(); 71                 break; 72               case QR_CODE:  //這裡是二維碼 73                 writer = new QRCodeWriter(); 74                 break; 75               case CODE_39: 76                 writer = new Code39Writer(); 77                 break; 78               case CODE_128:  //這個可以產生 79                 writer = new Code128Writer(); 80                 break; 81               case ITF: 82                 writer = new ITFWriter(); 83                 break; 84               case PDF_417:  //這個可以產生 85                 writer = new PDF417Writer(); 86                 break; 87               case CODABAR: 88                 writer = new CodaBarWriter(); 89                 break; 90               default: 91                 throw new IllegalArgumentException("No encoder available for format " + format); 92             } 93             return writer.encode(contents, format, width, height, hints); 94           } 95  96          */ 97         test.encode("helloworld,I‘m Hongten.welcome to my zone:http://www.cnblogs.com/hongten", file, BarcodeFormat.QR_CODE, 200, 200, null); 98         test.decode(file); 99     }100 101     /**102      * 產生QRCode二維碼<br> 103      * 在編碼時需要將com.google.zxing.qrcode.encoder.Encoder.java中的<br>104      *  static final String DEFAULT_BYTE_MODE_ENCODING = "ISO8859-1";<br>105      *  修改為UTF-8，否則中文編譯後解析不了<br>106      */107     public void encode(String contents, File file, BarcodeFormat format, int width, int height, Map<EncodeHintType, ?> hints) {108         try {
                 //消除亂碼
　　　　　　　　　 contents = new String(contents.getBytes("UTF-8"), "ISO-8859-1"); 109             BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, format, width, height);110             writeToFile(bitMatrix, "png", file);111         } catch (Exception e) {112             e.printStackTrace();113         }114     }115 116     /**117      * 產生二維碼圖片<br>118      * 119      * @param matrix120      * @param format121      *            圖片格式122      * @param file123      *            產生二維碼圖片位置124      * @throws IOException125      */126     public static void writeToFile(BitMatrix matrix, String format, File file) throws IOException {127         BufferedImage image = toBufferedImage(matrix);128         ImageIO.write(image, format, file);129     }130 131     /**132      * 產生二維碼內容<br>133      * 134      * @param matrix135      * @return136      */137     public static BufferedImage toBufferedImage(BitMatrix matrix) {138         int width = matrix.getWidth();139         int height = matrix.getHeight();140         BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);141         for (int x = 0; x < width; x++) {142             for (int y = 0; y < height; y++) {143                 image.setRGB(x, y, matrix.get(x, y) == true ? BLACK : WHITE);144             }145         }146         return image;147     }148 149     /**150      * 解析QRCode二維碼151      */152     @SuppressWarnings("unchecked")153     public void decode(File file) {154         try {155             BufferedImage image;156             try {157                 image = ImageIO.read(file);158                 if (image == null) {159                     System.out.println("Could not decode image");160                 }161                 LuminanceSource source = new BufferedImageLuminanceSource(image);162                 BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));163                 Result result;164                 @SuppressWarnings("rawtypes")165                 Hashtable hints = new Hashtable();166                 //解碼設定編碼方式為：utf-8167                 hints.put(DecodeHintType.CHARACTER_SET, "utf-8");168                 result = new MultiFormatReader().decode(bitmap, hints);169                 String resultStr = result.getText();170                 System.out.println("解析後內容：" + resultStr);171             } catch (IOException ioe) {172                 System.out.println(ioe.toString());173             } catch (ReaderException re) {174                 System.out.println(re.toString());175             }176         } catch (Exception ex) {177             System.out.println(ex.toString());178         }179     }180 }

是不是很簡單.....

源碼下載：http://files.cnblogs.com/hongten/QRCodes.rar

java 二維碼