SpringBoot bean not loading as expected

I expect my controller to be loaded when the ElasticsearchDataAutoConfiguration bean exists, but my ElasticSearchController.java has not been loaded as a bean.

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>3.2.1</version>
    <relativePath/>
</parent>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
    </dependency>
</dependencies>

@SpringBootApplication
public class Boot3Application {

    public static void main(String[] args) {
        ConfigurableApplicationContext run = SpringApplication.run(Boot3Application.class, args);
        boolean containsBean = run.containsBean("org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchDataAutoConfiguration");
        // true
        log.info("containsBean: {}", containsBean);
        ElasticsearchDataAutoConfiguration bean = run.getBean(ElasticsearchDataAutoConfiguration.class);
    }

}

package com.example.boot3.controller;

@RestController
@RequestMapping("/es")
@DependsOn("org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchDataAutoConfiguration")
@ConditionalOnBean(ElasticsearchDataAutoConfiguration.class)
public class ElasticSearchController {
}

package com.example.boot3.repository;

@ConditionalOnBean(ElasticsearchDataAutoConfiguration.class)
public interface IProductRepository extends ElasticsearchRepository<Product, String> {
}

 IProductRepository matched:
      - @ConditionalOnBean (types: org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchDataAutoConfiguration; SearchStrategy: all) found bean 'org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchDataAutoConfiguration' (OnBeanCondition)

 ElasticSearchController:
      Did not match:
         - @ConditionalOnBean (types: org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchDataAutoConfiguration; SearchStrategy: all) did not find any beans of type org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchDataAutoConfiguration (OnBeanCondition)

Project directory structure

Comment From: wilkinsona

This won't work as application configuration is processed before auto-configuration. This means that ElasticsearchDataAutoConfiguration won't have ben processed and defined as a bean when your ElasticSearchController is being processed. @DependsOn does not help with that as it does not affect the order in which configuration classes are processed.

As described in the javadoc of @ConditionalOnBean, it is only intended for use on auto-configuration. You should not use it on a @Controller that's found through component scanning.

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