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How to do redirect when reading QR in java?
Good afternoon! I have a method that generates a QR code.
How can I make it so that when reading, it automatically redirects to the specified path in the QR?
CODE:
@Override
public List<QrCodeResponse> getQrCode(String inn) {
List<Users> users = usersRepository.findByInnEquals(inn);
List<QrCodeResponse> responseList = new ArrayList<>();
try {
users.forEach(user -> {
byte[] image = qrCodeGenerator.generate("http://localhost:6677/credit-qr/get-info-by-userID?userId=" + user.getId().toString());
String qrImage = Base64.getEncoder().encodeToString(image);
QrCodeResponse response = QrCodeResponse.builder().qrImage(qrImage)
.name(user.getBrand()).build();
responseList.add(response);
});
return responseList;
} catch (Exception ex) {
log.error("Error on getting QR code : {}", ex.getMessage());
return null;
}
}
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select goodsid, count(1) cnt
from goods
where user_id = userid
group by goodsid
order by cnt desc
limit 1
No way.
A QR code is just encrypted text. Nothing more.
Any processing, starting with the conversion from image to text, is performed on the end device.
In some phones, the QR recognizer is built into the standard camera application, in others it is not even there.
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