How to secure Spring boot REST API endpoints with Amazon Cognito

Hi Hari,

Glad you read the post. The auth URL is :<< <clientid>.auth.<aws-region>.amazonco… >>, don't forget ".amazoncognito.com" before /login , not << <clientid>.auth.<aws-region>/login >>.

Hope this will help you.

Wilson KOMLAN Hi Wilson, Just to give an update, I used the auth URL in the format you mentioned: << <clientid>.auth.<aws-region>.amazonco… >>

but I still couldn't get it to work. I was able to sign in, was redirected to the callback URI with an auth code on browser but postman kept complaining invalid_client and was never able to fetch a token.

So I created a new app client with a client secret, used that to signin and get an auth code from the /login endpoint.

I then manually called the oauth2/token endpoint in a new tab via postman using this auth code and bunch of other attributes as mentioned in the below guide: medium.com/vedity/aws-cognito-token-generation-fo… and managed to generate the token. I was then able to use the token to call my spring boot API.

So instead of doing it in 1 step, I ended up doing 2 steps but I am mighty pleased that my API is secure with AWS cognito, all thanks to you.

I am now planning to try out your Spring boot API + AWS Fargate guide.

Thanks a lot mate! God bless you!