java和js生成二维码

Posted 2020-07-31 刚子2013

1. java生成二维码

1.1 依赖jar包配置（使用maven依赖）

 1         <dependency>
 2             <groupId>com.google.zxing</groupId>
 3             <artifactId>core</artifactId>
 4             <version>3.0.0</version>
 5         </dependency>
 6         <dependency>
 7             <groupId>com.google.zxing</groupId>
 8             <artifactId>javase</artifactId>
 9             <version>3.0.0</version>
10         </dependency>

 

1.2 生成二维码——Zxing

 1     public static void createQrCode() {
 2         try {
 3             String content = "120605181003;http://www.cnblogs.com/jtmjx";
 4             String path = "D:/temp";
 5 
 6             MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
 7 
 8             Map hints = new HashMap();
 9             hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
10             BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, 400, 400, hints);
11             File file1 = new File(path, "qrCode.jpg");
12             MatrixToImageWriter.writeToFile(bitMatrix, "jpg", file1);
13 
14             System.out.println("成功生成二维码");
15         } catch (Exception e) {
16             e.printStackTrace();
17         }
18     }

 

 1.3 解析二维码——Zxing

 1     public static void parseQrCode() {
 2         try {
 3             MultiFormatReader formatReader = new MultiFormatReader();
 4             String filePath = "D:/temp/qrCode.jpg";
 5             File file = new File(filePath);
 6             BufferedImage image = ImageIO.read(file);
 7             ;
 8             LuminanceSource source = new BufferedImageLuminanceSource(image);
 9             Binarizer binarizer = new HybridBinarizer(source);
10             BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
11             Map hints = new HashMap();
12             hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
13             Result result = formatReader.decode(binaryBitmap, hints);
14 
15             System.out.println("result = " + result.toString());
16             System.out.println("resultFormat = " + result.getBarcodeFormat());
17             System.out.println("resultText = " + result.getText());
18 
19         } catch (Exception e) {
20             e.printStackTrace();
21         }
22     }

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

 1     <script type="text/javascript" src="http://cdn.staticfile.org/jquery/2.0.0/jquery.min.js"></script>
 2     <script type="text/javascript" src="../js/jquery.qrcode.min.js"></script>
 3     <script>
 4         // 方式一
 5         //$(\'#qrcode\').qrcode("http://www.cnblogs.com/xiyangbaixue");
 6         // 方式二
 7         $("#qrcode").qrcode({ 
 8             render: "table", //table方式 
 9             width: 200, //宽度 
10             height:200, //高度 
11             text: "www.baidu.com" //任意内容 
12         });
13     </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

 1     <script type="text/javascript" src="http://cdn.staticfile.org/jquery/2.0.0/jquery.min.js"></script>
 2     <script type="text/javascript" src="../js/qrcode.js"></script>
 3     <script>
 4         // 方式一
 5         //new QRCode(document.getElementById("qrcode"), "http://www.cnblogs.com/xiyangbaixue");
 6         // 方式二
 7         new QRCode(document.getElementById("qrcode"), {
 8             text: "http://www.cnblogs.com/xiyangbaixue",
 9             width: 50,
10             height: 50,
11             background: "#ccc",
12             foreground: "red"
13         });
14     </script>