oauth2-client | Java OAuth2 client for the Resource Owner Password Grant | OAuth library

I am trying to build a Spring Boot application that combines Webflux, OAuth2 and HATEOAS. Building a minimal application with Webflux and OAuth2 works OK, but as soon as I add HATEOAS, my minimal test fails.

build.gradle:

I am reading from an external API with hypermedia links and OAuth2 authentication using Spring's WebClient. When accessing the API the JSON data is correctly converted to model objects but the supplied HAL links are either omitted if the model object extends Spring HATEOAS RepresentationModel or give a NullPointerException when the model object extends EntityModel. I suspect a problem with the hypermediaWebClientCustomizer but was not able to solve it as of now.

I tried reading the JSON with a Traverson client in a testcase. That was basically working, if i replaced relative URIs with absolute URIs and the application/json header with a application/hal+json header. I would go on with Traverson but besides these two problems Traverson requires a RestTemplate (OAuth2RestTemplate in this case), which is no longer available in our Spring version.

Any ideas if there is a problem with the configuration or what else could go wrong?

This is my configuration:

dependencies (in part)

I'd like to start with a Google Service Account credential (either opaque access token or ID JWT) and end with an Azure B2C credential. Is something like this possible with Azure? I'm not seeing any APIs for doing it: https://docs.microsoft.com/en-us/azure/active-directory-b2c/openid-connect

Note: this is conceptually similar (but different in terms of target identity) from another question I asked earlier: Impersonate Azure Service Principal from a Google Service Account

EDIT: Our use case for this is exchanging Google Service Account credentials that represent an untrusted client (e.g. a user in the system), for a user token in Azure B2C. Unfortunately, this eliminates the client credentials flow, as mentioned in the comments.

I've been trying to follow the direction here and applying it to nodejs.

I'm getting the following error:

I receive the following error:

I've searched Stack and google looking for an answer to no luck. So I'm hoping someone can help me here.

I have a Spring Boot API which is currently using Tomcat, now I've read about some of the performance improvements in Undertow so I wanted to give it a go and see for myself.

Now, I've removed my spring-boot-web-starter dependancy and added undertow however I'm getting the following errors in a few classes and I can't seem to find how to resolve them:

I'm developing a spring boot app and I have an authantication step.I'm using spring security and also spring-boot-starter-oauth2-client. I want my users can login with google.

I've read a lot of articles about social login with oauth2, they are making siple configurations and its working.Whenever I tried the same steps it did not work for me. I thing I'm missing little point.

He is all have done;

1 - In application.yml I put below conf.

I am trying to get information from Azure ARM about a specific resource. Currently I was able to get the access token from oAuth2 using the following article https://docs.microsoft.com/en-us/azure/active-directory/develop/v2-oauth2-client-creds-grant-flow, however when I try to use it I get the following error:

Invoke-RestMethod : {"error":{"code":"InvalidAuthenticationTokenAudience","message":"The access token has been obtained for wrong audience or resource '00000002-0000-0000-c000-000000000000'. It should exactly match with one of the allowed audiences 'https://management.core.windows.net/','https://management.core.windows.net','https://management.azure.com/','https://management.azure.com'."}}

Below is the code that I am attempting to run:

I have successfully tried performing authentication using the Shared key and then make REST calls to Azure Blob. Now I am trying to Authenticate using AzureAD OAuth 2.0, to receive a Bearer token and pass that for Authentication to make REST calls. I am successfully getting the Bearer token but unable to perform authentication.

Here's the code: