本文實例為大家分享了Java二維碼生成與解碼的具體代碼,供大家參考,具體內容如下
一、添加Maven依賴(解碼時需要上傳二維碼圖片,所以需要依賴文件上傳包)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
<!-- google二維碼工具 --> <dependency> <groupId>com.google.zxing</groupId> <artifactId>javase</artifactId> <version> 3.1 . 0 </version> </dependency> <!-- 文件上傳 --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version> 1.3 . 1 </version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version> 2.4 </version> </dependency> |
二、創建生成二維碼接口(接口參數為二維碼內容,通常是URL)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
/** * 生成二維碼 * google zxing 實現 * @param text * @return */ @RequestMapping (value = "/qrcode/encode" , method = RequestMethod.POST) public void encodeQrCode(String text, HttpServletResponse response) { try { // 設置二維碼參數 Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>(); hints.put(EncodeHintType.CHARACTER_SET, "UTF-8" ); BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, 150 , 150 , hints); //返回二維碼 MatrixToImageWriter.writeToStream(bitMatrix, "jpg" , response.getOutputStream()); } catch (Exception e) { e.printStackTrace(); } } |
三、創建二維碼解碼接口(直接返回解碼后的二維碼內容)
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
|
/** * 二維碼圖片解碼 * google zxing 實現 * @param qrImg * @return */ @RequestMapping (value = "/qrcode/decode" , method = RequestMethod.POST) public String decodeQrCode(MultipartFile qrImg) { if (!qrImg.isEmpty()) { try { BufferedImage image = ImageIO.read(qrImg.getInputStream()); BinaryBitmap binaryBitmap = new BinaryBitmap( new HybridBinarizer( new BufferedImageLuminanceSource(image))); // 定義二維碼的參數: HashMap<DecodeHintType, Object> hints = new HashMap<>(); // 定義字符集 hints.put(DecodeHintType.CHARACTER_SET, "utf-8" ); Result result = new MultiFormatReader().decode(binaryBitmap, hints); return result.getText(); } catch (Exception e) { e.printStackTrace(); } } return null ; } |
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持服務器之家。