Workaround for RestTemplate circular reference error with Spring Data Rest and Azure B2C authentication on Spring Boot 3.X

application.yaml

spring:
  cloud:
    azure:
      active-directory:
        b2c:
          enabled: false
          fix-enabled: true

FixAadB2cOAuth2ClientConfiguration.java

package com.azure.spring.cloud.autoconfigure.implementation.aadb2c.configuration;

import com.azure.spring.cloud.autoconfigure.implementation.aadb2c.configuration.conditions.AadB2cConditions;
import com.azure.spring.cloud.autoconfigure.implementation.aadb2c.configuration.properties.AadB2cProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.*;
import org.springframework.security.oauth2.client.web.OAuth2LoginAuthenticationFilter;

// Workaround because higher versions are not compatible with spring-data-rest: https://github.com/Azure/azure-sdk-for-java/issues/31497
@Configuration(
        proxyBeanMethods = false
)
@ConditionalOnProperty(
        value = {"spring.cloud.azure.active-directory.b2c.fix-enabled"},
        havingValue = "true"
)
@Conditional({AadB2cConditions.ClientRegistrationCondition.class})
@Import({AadB2cPropertiesConfiguration.class})
@ConditionalOnClass({OAuth2LoginAuthenticationFilter.class})
public class FixAadB2cOAuth2ClientConfiguration {
    private RestTemplateBuilder restTemplateBuilder;

    @Autowired
    public void setRestTemplateBuilder(RestTemplateBuilder restTemplateBuilder) {
        this.restTemplateBuilder = restTemplateBuilder;
    }

    @Bean
    public AadB2cOAuth2ClientConfiguration getAadB2cOAuth2ClientConfiguration(AadB2cProperties properties) throws Exception {
        return new AadB2cOAuth2ClientConfiguration(properties, restTemplateBuilder);
    }
}