1 import java.awt.image.BufferedImage;
  2 import java.io.File;
  3 import java.util.Hashtable;
  4
  5 import javax.imageio.ImageIO;
  6
  7 import com.google.zxing.BarcodeFormat;
  8 import com.google.zxing.BinaryBitmap;
  9 import com.google.zxing.DecodeHintType;
 10 import com.google.zxing.EncodeHintType;
 11 import com.google.zxing.LuminanceSource;
 12 import com.google.zxing.MultiFormatReader;
 13 import com.google.zxing.MultiFormatWriter;
 14 import com.google.zxing.Result;
 15 import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
 16 import com.google.zxing.client.j2se.MatrixToImageWriter;
 17 import com.google.zxing.common.BitMatrix;
 18 import com.google.zxing.common.HybridBinarizer;
 19 import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
 20
 21 /**
 22  * 条形码和二维码编码解码
 23  */
 24 public class ZxingHandler {
 25
 26     /**
 27      * 条形码编码
 28      *
 29      * @param contents
 30      * @param width
 31      * @param height
 32      * @param imgPath
 33      */
 34     public static void encode(String contents, int width, int height, String imgPath) {
 35         int codeWidth = 3 + // start guard
 36                 (7 * 6) + // left bars
 37                 5 + // middle guard
 38                 (7 * 6) + // right bars
 39                 3; // end guard
 40         codeWidth = Math.max(codeWidth, width);
 41         try {
 42             BitMatrix bitMatrix = new MultiFormatWriter().encode(contents,
 43                     BarcodeFormat.EAN_13, codeWidth, height, null);
 44
 45             MatrixToImageWriter
 46                     .writeToFile(bitMatrix, "png", new File(imgPath));
 47
 48         } catch (Exception e) {
 49             e.printStackTrace();
 50         }
 51     }
 52
 53     /**
 54      * 条形码解码
 55      *
 56      * @param imgPath
 57      * @return String
 58      */
 59     public static String decode(String imgPath) {
 60         BufferedImage image = null;
 61         Result result = null;
 62         try {
 63             image = ImageIO.read(new File(imgPath));
 64             if (image == null) {
 65                 System.out.println("the decode image may be not exit.");
 66             }
 67             LuminanceSource source = new BufferedImageLuminanceSource(image);
 68             BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
 69
 70             result = new MultiFormatReader().decode(bitmap, null);
 71             return result.getText();
 72         } catch (Exception e) {
 73             e.printStackTrace();
 74         }
 75         return null;
 76     }
 77
 78     /**
 79      * 二维码编码
 80      *
 81      * @param contents
 82      * @param width
 83      * @param height
 84      * @param imgPath
 85      */
 86     public static void encode2(String contents, int width, int height, String imgPath) {
 87         Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
 88         // 指定纠错等级
 89         hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
 90         // 指定编码格式
 91         hints.put(EncodeHintType.CHARACTER_SET, "GBK");
 92         try {
 93             BitMatrix bitMatrix = new MultiFormatWriter().encode(contents,
 94                     BarcodeFormat.QR_CODE, width, height, hints);
 95
 96             MatrixToImageWriter
 97                     .writeToFile(bitMatrix, "png", new File(imgPath));
 98
 99         } catch (Exception e) {
100             e.printStackTrace();
101         }
102     }
103
104     /**
105      * 二维码解码
106      *
107      * @param imgPath
108      * @return String
109      */
110     public static String decode2(String imgPath) {
111         BufferedImage image = null;
112         Result result = null;
113         try {
114             image = ImageIO.read(new File(imgPath));
115             if (image == null) {
116                 System.out.println("the decode image may be not exit.");
117             }
118             LuminanceSource source = new BufferedImageLuminanceSource(image);
119             BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
120
121             Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
122             hints.put(DecodeHintType.CHARACTER_SET, "GBK");
123
124             result = new MultiFormatReader().decode(bitmap, hints);
125             return result.getText();
126         } catch (Exception e) {
127             e.printStackTrace();
128         }
129         return null;
130     }
131
132     /**
133      * @param args
134      */
135     public static void main(String[] args) {
136
137         // 条形码
138         String imgPath = "target\\zxing_EAN13.png";
139         String contents = "6923450657713";
140         int width = 105, height = 50;
141
142         ZxingHandler.encode(contents, width, height, imgPath);
143         System.out.println("finished zxing EAN-13 encode.");
144
145         String decodeContent = ZxingHandler.decode(imgPath);
146         System.out.println("解码内容如下：" + decodeContent);
147         System.out.println("finished zxing EAN-13 decode.");
148
149         // 二维码
150         String imgPath2 = "target\\zxing.png";
151         String contents2 = "Hello Gem, welcome to Zxing!"
152                 + "\nBlog [ http://jeeplus.iteye.com ]"
153                 + "\nEMail [ jeeplus@163.com ]";
154         int width2 = 300, height2 = 300;
155
156         ZxingHandler.encode2(contents2, width2, height2, imgPath2);
157         System.out.println("finished zxing encode.");
158
159         String decodeContent2 = ZxingHandler.decode2(imgPath2);
160         System.out.println("解码内容如下：" + decodeContent2);
161         System.out.println("finished zxing decode.");
162
163     }
164
165 }