This the gist to demo how to use spring-cloud-azure-core module. The spring-cloud-azure-core module is the core module of all Spring Cloud Azure libraries. It tries to unify the build process of Azure Service client builders.

SpringCoreUsages.java

// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.

/**
 * The spring-cloud-azure-core module is the core module of all Spring Cloud Azure libraries. It tries to unify the
 * build process of Azure Service client builders.
 */
public class SpringCoreUsages {

    //============================
    // Deomo how to use AzureStorageBlobProtocolResolver.java 
    @Service("BlobStorage")
    public class BlobStorage implements Storage {

        private static final String RESOURCE_SEARCH_PATTERN_PREFIX = "azure-blob://file-uploader/";

        @Autowired
        private AzureStorageBlobProtocolResolver storageResourcePatternResolver;

        @Override
        public List<String> listFiles() throws IOException {
            Resource[] resources = storageResourcePatternResolver.getResources(RESOURCE_SEARCH_PATTERN_PREFIX + "*");
            return Stream.of(resources)
                         .map(Resource::getFilename)
                         .collect(Collectors.toList());
        }
    }

    
    
    //============================
    // Deomo how to use the AzureServiceClientBuilderCustomizer.java
    /**
     * In the autoconfiguration module, we'll configure the builder factory according to the configuration properties
     * user configured. But there are cases when users want to customize the builder factory, perhaps to set the credential
     * to a user built one.
     */
    // This bean will be picked up by the autoconfiguration for a `SecretClientBuilderFactory` 
    // https://github.com/Azure/azure-sdk-for-java/blob/f6f4d8263ae88e8896eac60a38fe600edbd53b79/sdk/spring/spring-cloud-azure-autoconfigure/src/main/java/com/azure/spring/cloud/autoconfigure/keyvault/secrets/AzureKeyVaultSecretAutoConfiguration.java#L70
    @Bean
    CredentialCustomizer userDefinedCredentialCustomizer() {
        AzureCliCredential cliCredential = new AzureCliCredentialBuilder().build();
        CredentialCustomizer credentialCustomizer = new CredentialCustomizer(cliCredential);
        return credentialCustomizer;
    }

    static class CredentialCustomizer implements AzureServiceClientBuilderCustomizer<SecretClientBuilder> {

        private final TokenCredential credential;

        CredentialCustomizer(TokenCredential tokenCredential) {
            this.credential = tokenCredential;
        }

        @Override
        public void customize(SecretClientBuilder builder) {
            builder.credential(this.credential);
        }
    }
    
    //============================
    // Deomo how to use the StaticConnectionStringProvider.java
     /**
     * If the connection string are not convenient to pass via the application.properties, users can define a bean in the Spring context to provide it instead.
     */
    // This StaticConnectionStringProvider will be picked up by the autoconfiguration of a `EventHubClientBuilderFactory`
    // https://github.com/Azure/azure-sdk-for-java/blob/92af61521f76ea60e95cd5cec521ab1cf1c4d246/sdk/spring/spring-cloud-azure-autoconfigure/src/main/java/com/azure/spring/cloud/autoconfigure/eventhubs/AzureEventHubsClientBuilderConfiguration.java#L43
    @Bean
    StaticConnectionStringProvider<EventHubs> userDefinedEventHubsConnectionString() {
        String connectionString = someMethodToGetConnectionString();
        return new StaticConnectionStringProvider(new EventHubs(), connecionString);
    }
    
    
    
}