java和js生成二维码

1. java生成二维码

1.1 依赖jar包配置（使用maven依赖）

         <dependency>
             <groupId>com.google.zxing</groupId>
             <artifactId>core</artifactId>
             <version>3.0.0</version>
         </dependency>
         <dependency>
             <groupId>com.google.zxing</groupId>
             <artifactId>javase</artifactId>
             <version>3.0.0</version>
         </dependency>

1.2 生成二维码——Zxing

     public static void createQrCode() {
         try {
             String content = "120605181003;http://www.cnblogs.com/jtmjx";
             String path = "D:/temp";

             MultiFormatWriter multiFormatWriter = new MultiFormatWriter();

             Map hints = new HashMap();
             hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
             BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, 400, 400, hints);
             File file1 = new File(path, "qrCode.jpg");
             MatrixToImageWriter.writeToFile(bitMatrix, "jpg", file1);

             System.out.println("成功生成二维码");
         } catch (Exception e) {
             e.printStackTrace();
         }
     }

 1.3 解析二维码——Zxing

     public static void parseQrCode() {
         try {
             MultiFormatReader formatReader = new MultiFormatReader();
             String filePath = "D:/temp/qrCode.jpg";
             File file = new File(filePath);
             BufferedImage image = ImageIO.read(file);
             ;
             LuminanceSource source = new BufferedImageLuminanceSource(image);
             Binarizer binarizer = new HybridBinarizer(source);
             BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
             Map hints = new HashMap();
             hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
             Result result = formatReader.decode(binaryBitmap, hints);

             System.out.println("result = " + result.toString());
             System.out.println("resultFormat = " + result.getBarcodeFormat());
             System.out.println("resultText = " + result.getText());

         } catch (Exception e) {
             e.printStackTrace();
         }
     }

2. js生成二维码

2.1 使用jquery-qrcode

　　jquery-qrcode特点：操作简单，体积小，压缩之后只有14k，但是不支持中文编码。　　

　　jquery.qrcode.min.js文件下载路径：http://files.cnblogs.com/files/qdwyg2013/jquery.qrcode.min.js

     <script type="text/javascript" src="http://cdn.staticfile.org/jquery/2.0.0/jquery.min.js"></script>
     <script type="text/javascript" src="../js/jquery.qrcode.min.js"></script>
     <script>
         // 方式一
         //$('#qrcode').qrcode("http://www.cnblogs.com/xiyangbaixue");
         // 方式二
         $("#qrcode").qrcode({
             render: "table", //table方式
             width: 200, //宽度
             height:200, //高度
             text: "www.baidu.com" //任意内容
         });
     </script>

2.2 使用qrcode

　　qrcode特点：中文生成的二维码扫描不会出现乱码，且可以选择使用哪种元素来画二维码。

　　qrcode.js文件下载路径：http://files.cnblogs.com/files/qdwyg2013/qrcode.js

     <script type="text/javascript" src="http://cdn.staticfile.org/jquery/2.0.0/jquery.min.js"></script>
     <script type="text/javascript" src="../js/qrcode.js"></script>
     <script>
         // 方式一
         //new QRCode(document.getElementById("qrcode"), "http://www.cnblogs.com/xiyangbaixue");
         // 方式二
         new QRCode(document.getElementById("qrcode"), {
             text: "http://www.cnblogs.com/xiyangbaixue",
             width: 50,
             height: 50,
             background: "#ccc",
             foreground: "red"
         });
     </script>