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Xml代码
| 1 2 3 4 5 6 7 8 9 10 | < dependency > < groupId >com.google.zxing</ groupId > < artifactId >core</ artifactId > < version >1.7</ version > </ dependency > < dependency > < groupId >com.google.zxing</ groupId > < artifactId >javase</ artifactId > < version >1.7</ version > </ dependency > |
java
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 | package util.qrcode; import java.awt.image.BufferedImage; import java.io.Closeable; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.URL; import java.util.Hashtable; import java.util.List; import javax.imageio.ImageIO; import com.google.zxing.BarcodeFormat; import com.google.zxing.BinaryBitmap; import com.google.zxing.EncodeHintType; import com.google.zxing.LuminanceSource; import com.google.zxing.MultiFormatReader; import com.google.zxing.MultiFormatWriter; import com.google.zxing.NotFoundException; import com.google.zxing.Result; import com.google.zxing.WriterException; 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; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; public class QRCodeUtils { /** 私有构造方法 */ private QRCodeUtils() { super (); } private static final Hashtable<EncodeHintType, Object> ZXING_HINTS; static { ZXING_HINTS = new Hashtable<EncodeHintType, Object>(); ZXING_HINTS.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); ZXING_HINTS.put(EncodeHintType.CHARACTER_SET, "UTF-8" ); } public void encode(String contents, File file,String filePostfix, BarcodeFormat format, int width, int height, Map<EncodeHintType, ?> hints) { Hashtable hintsw = new Hashtable(); // 指定纠错等级 hintsw.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L); // 指定编码格式 hintsw.put(EncodeHintType.CHARACTER_SET, "UTF-8" ); //要使用utf8 才能编码，并解码中文！ try { BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, width, height, ZXING_HINTS); MatrixToImageWriter.writeToFile(bitMatrix, "png" , file); } catch (Exception e) { e.printStackTrace(); } } /** * 将二维码写入数据流 * * @param out 数据流 * @param lines 数据 * @param width 二维码宽度 * @param height 二维码高度 */ public static void writeToOutputStream(OutputStream out, List<String> lines, int width, int height) { StringBuilder sb = new StringBuilder(); for ( int i = 0 ; i < lines.size(); i ++) { sb.append(lines.get(i)); if (i != lines.size() - 1 ) { sb.append( "\n" ); } } writeToOutputStream(out, sb.toString(), width, height); } /** * 将二维码写入数据流 * * @param out 数据流 * @param contents 数据 * @param width 二维码宽度 * @param height 二维码高度 */ public static void writeToOutputStream(OutputStream out, String contents, int width, int height) { try { BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, width, height, ZXING_HINTS); MatrixToImageWriter.writeToStream(bitMatrix, "png" , out); } catch (WriterException e) { throw new RuntimeException(e.getMessage(), e); } catch (IOException e) { throw new RuntimeException(e.getMessage(), e); } } /** * 将二维码写入文件 * * @param file 文件 * @param lines 数据 * @param width 二维码宽度 * @param height 二维码高度 */ public static void writeToFile(File file, List<String> lines, int width, int height) { StringBuilder sb = new StringBuilder(); for ( int i = 0 ; i < lines.size(); i ++) { sb.append(lines.get(i)); if (i != lines.size() - 1 ) { sb.append( "\n" ); } } writeToFile(file, sb.toString(), width, height); } /** * 将二维码写入文件 * * @param file 文件 * @param contents 数据 * @param width 二维码宽度 * @param height 二维码高度 */ public static void writeToFile(File file, String contents, int width, int height) { try { BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, width, height, ZXING_HINTS); MatrixToImageWriter.writeToFile(bitMatrix, "png" , file); } catch (WriterException e) { throw new RuntimeException(e.getMessage(), e); } catch (IOException e) { throw new RuntimeException(e.getMessage(), e); } } /** * 解析二维码 * * @param image 图片 * @return 信息 */ public static String decode(BufferedImage image) { Result result = null ; LuminanceSource source = new BufferedImageLuminanceSource(image); BinaryBitmap bitmap = new BinaryBitmap( new HybridBinarizer(source)); try { result = new MultiFormatReader().decode(bitmap, ZXING_HINTS); } catch (NotFoundException e) { throw new RuntimeException(e.getMessage(), e); } return result.getText(); } /** * 解析二维码 * * @param file 图片 * @return 信息 */ public static String decode(File file) { BufferedImage image = null ; try { image = ImageIO.read(file); } catch (IOException e) { throw new RuntimeException(e.getMessage(), e); } return decode(image); } /** * 解析二维码 * * @param input 图片 * @return 信息 */ public static String decode(InputStream input) { BufferedImage image = null ; try { image = ImageIO.read(input); } catch (IOException e) { throw new RuntimeException(e.getMessage(), e); } return decode(image); } /** * 解析二维码 * * @param url 图片 * @return 信息 */ public static String decode(URL url) { BufferedImage image = null ; try { image = ImageIO.read(url); } catch (IOException e) { throw new RuntimeException(e.getMessage(), e); } return decode(image); } /** * 关闭 * * @param closeable 关闭对象 */ public static void closeQuietly(Closeable closeable) { if (closeable == null ) return ; try { closeable.close(); } catch (Exception e) {} } 本文转自yunlielai51CTO博客，原文链接： http://blog.51cto.com/4925054/1354838 ，如需转载请自行联系原作者 |