java生成/解析二维码

在http://www.ostools.net/qr看到了一个生成二维码的工具，于是就产生了一个想法：

为什么自己不做一个二维码的生成和解析工具呢？花了一个多钟的时间，嘿嘿，就做出来啦...

先来看看效果图吧：

CODE_QR:                                            


 CODE_128:        


PDF_417:



二维码的意思是：



下面是操作步骤：

一：下载zxing的压缩包：

可以到这里下载：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：把他添加进入你的项目的里面：



/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开源工具生成二维码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类中，定义了一些我们不知道的码,二维码只是其中的一种<br>
57          * public BitMatrix encode(String contents,
58                           BarcodeFormat format,
59                           int width, int height,
60
d6d2
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:  //这里是二维码
73                 writer = new QRCodeWriter();
74                 break;
75               case CODE_39:
76                 writer = new Code39Writer();
77                 break;
78               case CODE_128:  //这个可以生成
79                 writer = new Code128Writer();
80                 break;
81               case ITF:
82                 writer = new ITFWriter();
83                 break;
84               case PDF_417:  //这个可以生成
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      * 生成QRCode二维码<br>
103      * 在编码时需要将com.google.zxing.qrcode.encoder.Encoder.java中的<br>
104      *  static final String DEFAULT_BYTE_MODE_ENCODING = "ISO8859-1";<br>
105      *  修改为UTF-8，否则中文编译后解析不了<br>
106      */
107     public void encode(String contents, File file, BarcodeFormat format, int width, int height, Map<EncodeHintType, ?> hints) {
108         try {
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      * 生成二维码图片<br>
118      *
119      * @param matrix
120      * @param format
121      *            图片格式
122      * @param file
123      *            生成二维码图片位置
124      * @throws IOException
125      */
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      * 生成二维码内容<br>
133      *
134      * @param matrix
135      * @return
136      */
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二维码
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                 //解码设置编码方式为：utf-8
167                 hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
168                 result = new MultiFormatReader().decode(bitmap, hints);
169                 String resultStr = result.getText();
170                 System.out.println("解析后内容：" + 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 }

是不是很简单.....

源码下载：http://files.cnblogs.com/hongten/QRCodes.rar