Java开发_生成/解析自己的QRCode二维码

ゝ一纸荒年。 2022-09-25 07:20 83阅读 0赞

# [java开发\_生成/解析自己的QRCode二维码][java_QRCode] #

在[http://www.ostools.net/qr][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:

![r_test.png][] CODE\_128:        ![r_test_CODE_128.png][]

PDF\_417:

![r_test_PDF_417.png][]

二维码的意思是：

![r_encode.png][]

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][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=][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：

![r_QQ_e6_88_aa_e5_9b_be20121026220846.png][]

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

![复制代码][copycode.gif]

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 
 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: //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 
 103 * 在编码时需要将com.google.zxing.qrcode.encoder.Encoder.java中的 
 104 * static final String DEFAULT_BYTE_MODE_ENCODING = "ISO8859-1"; 
 105 * 修改为UTF-8，否则中文编译后解析不了 
 106 */
 107 public void encode(String contents, File file, BarcodeFormat format, int width, int height, Map<EncodeHintType, ?> hints) {
 108 try {
 
 //消除乱码
 　　　　　　　　　 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 * 生成二维码图片 
 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 
 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 }

![复制代码][copycode.gif]

是不是很简单.....

源码下载：[http://files.cnblogs.com/hongten/QRCodes.rar][http_files.cnblogs.com_hongten_QRCodes.rar]

[java_QRCode]: http://www.cnblogs.com/hongten/archive/2012/10/26/java_qrcode.html
[http_www.ostools.net_qr]: http://www.ostools.net/qr
[r_test.png]: http://images.cnblogs.com/cnblogs_com/hongten/423214/r_test.png
[r_test_CODE_128.png]: /images/20220718/5bd2ed3b690940dabc96dcf88ca1ad96.png
[r_test_PDF_417.png]: /images/20220718/5d5ce75f209b4325aed857b20cea2216.png
[r_encode.png]: /images/20220718/260daa917b22484089e68d0680e247e1.png
[http_code.google.com_p_zxing_downloads_list]: http://code.google.com/p/zxing/downloads/list
[http_code.google.com_p_zxing_downloads_detail_name_ZXing-2.1.zip_can_2_q]: http://code.google.com/p/zxing/downloads/detail?name=ZXing-2.1.zip&can=2&q=
[r_QQ_e6_88_aa_e5_9b_be20121026220846.png]: /images/20220718/7ec246ffb38b43adad59bc3c9c432ace.png
[copycode.gif]: /images/20220718/2ac63aba8ebf4efca50a333cf913ad26.png
[http_files.cnblogs.com_hongten_QRCodes.rar]: http://files.cnblogs.com/hongten/QRCodes.rar