Grails spring security rest inject tokenGenerator - grails

Question

I have a similar requirement like this post mentioned. :REST spring security - Manually authenticating a new user and getting access token
According to the accepted answer, the codes will be like:
class RegisterController {
def springSecurityService
def tokenGenerator
def tokenStorageService
def register() {
//do stuff
springSecurityService.reauthenticate(username)
String tokenValue = tokenGenerator.generateToken()
tokenStorageService.storeToken(tokenValue, springSecurityService.principal)
redirect url: "http://example.org/?access_token=${tokenValue}"
}
}
I tried but it didn't work for me. It seems the TokenGenerator implementation class is not injected right. I understand the default implementation in grails-spring-security-rest TokenGenerator will be the JWT but wonder where should I register or config it.

Answer 1

Well if you want to use the "tokenGenerator" then you need to register it under the "resources.groovy" like below
// creating the bean of token generator
tokenGenerator(SecureRandomTokenGenerator)
and then inject it into your controller or service like below
class RegisterController {
def springSecurityService
def tokenGenerator
def tokenStorageService
def register() {
//do stuff
springSecurityService.reauthenticate(username)
String tokenValue = tokenGenerator.generateToken()
tokenStorageService.storeToken(tokenValue, springSecurityService.principal)
redirect url: "http://example.org/?access_token=${tokenValue}"
}
}
I have followed the same example (with slight modification) and its working as expected.
I have used the "userDetailsService" for generating user instance instead of "springSecurityService.reauthenticate(username)"
So my function looks like below.
/**
* For generating the access token for the user
*
* #param userName : Holds the username of the user
*
* #return : access token
*/
String generateAccessToken(String userName){
String tokenValue
try{
//load user details
def userDetails = userDetailsService.loadUserByUsername(userName)
//generate access token
tokenValue = tokenGenerator.generateAccessToken(userDetails).accessToken
//store access token
tokenStorageService.storeToken(tokenValue, userDetails)
} catch (Exception e){
//Exception handling code
}
return tokenValue
}