Google's QR API is dead

[echometerain]

Use https://api.qrserver.com/v1/create-qr-code/?size=200x200&data= + generateOtpAuthUrl() instead of qrImageUrl()

[javaDev1214]

For generating QR code is not such a problem.

How to get: String generatedCode = TimeBasedOneTimePasswordUtil.generateCurrentNumberString(key) from URL above?

Thanks

[echometerain]

Assuming url is in the form of https://api.qrserver.com/v1/create-qr-code/?size=200x200&data=otpauth://totp/LoginSystem%3Fsecret%3DQYX6DXSBCNHGE5RV%26digits%3D6 then do something like generateCurrentNumberString(url.substring(100, 117))

note: the first D after secret is actually a part of %3D which is the url encoding for =

[javaDev1214]

Assuming url is in the form of https://api.qrserver.com/v1/create-qr-code/?size=200x200&data=otpauth://totp/LoginSystem%3Fsecret%3DQYX6DXSBCNHGE5RV%26digits%3D6 then do something like generateCurrentNumberString(url.substring(100, 117))

note: the first D after secret is actually a part of %3D which is the url encoding for =

Thank you! :)

[dpastov]

@echometerain can't we also generate image without using external service?

[echometerain]

yeah you definitely could

[dpastov]

@echometerain Can it be done with any QR java library? like https://github.com/nayuki/QR-Code-generator or it requires something more?

[echometerain]

probably, never tried it though

[dpastov]

I have used: https://github.com/nayuki/QR-Code-generator to generate QR code (based on value from generateOtpAuthUrl).

You will however need to update the method little bit and replace %3F and %26 on ? and & respectively.

[CupidStar]

For example, I no longer generate the two-dimensional code locally, I want to pass this string to the front end, and the front end will generate the two-dimensional code. In addition, I want to ask, does the authenticator App support

[CupidStar]

I don't quite understand where to use as the data source to generate the two-dimensional code, can you further help realize it

[echometerain]

I don't quite understand where to use as the data source to generate the two-dimensional code, can you further help realize it

if you're generating your own QR code (or using your "frontend" to do it), you should make the QR code encode the output of generateOtpAuthUrl()