Non-static method is being referenced from a static context in generate __BeanDefinitions.java while processing AOT

[woderchen]

Hi, I encountered an issue with Spring AOT. Please help me confirm if this is a bug. Thanks.
【what to do】
generate native file based on Springboot and GraalVM
【issue】:
Once running "mvn -Pnative native:compile",the message appears:
Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:3.4.3:process-aot (process-aot) ...
non-static method getMqMap() cannot be referenced from a static context MqConfig__BeanDefinitions.java

open MqConfig__BeanDefinitions.java in target/spring-aot:

@Generated
public class MqConfig__BeanDefinitions {
  @SuppressWarnings({"rawtypes", "unchecked"})
  Map getMqMap() {
    Map map = new LinkedHashMap(1);
    map.put("topic", "topic1");
    return map;
  }

  public static BeanDefinition getMqBeanDefinition() {
    RootBeanDefinition beanDefinition = new RootBeanDefinition(MqConfig.class);
    beanDefinition.getPropertyValues().addPropertyValue("namespace", "mq1");
    beanDefinition.getPropertyValues().addPropertyValue("servers", "1.1.1.1");
    beanDefinition.getPropertyValues().addPropertyValue("config", getMqMap());
    beanDefinition.setInstanceSupplier(MqConfig::new);
    return beanDefinition;
  }
}

------------refre to my codes and environment as below-------------
env: macos 14.1, springboot(spring-boot-maven-plugin) 3.4.3,Liberica-NIK-23.1.6-1,maven 3.6.3

1. The relevant content of application.yml is as follows:

akso:
  mq:
    configs:
      - namespace: "mq1"
        servers: "1.1.1.1"
        config:
          topic: "topic1"

2. MqConfig.java:

public class MqConfig {
    private String namespace;
    private String servers;
    private Map<String, String> config;
    ...setter and getter for above parameters...
}

3.AksoMqConfiguration.java

@Configuration
@ConfigurationProperties(prefix = "akso.mq")
@Import(ImportMqConfig.class)
public class AksoMqConfiguration {
    private List<MqConfig> configs;
    ...setter and getter for above parameters...
}

4. ImportMqConfig.java

public class ImportMqConfig implements ImportBeanDefinitionRegistrar, EnvironmentAware {
    private AksoMqConfiguration configuration;
    @Override
    public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata, BeanDefinitionRegistry registry) {
        for (MqConfig config : configuration.getConfigs()) {
            RootBeanDefinition beanDefinition = new RootBeanDefinition();
            beanDefinition.setBeanClass(MqConfig.class);
            MutablePropertyValues values = new MutablePropertyValues();
            values.addPropertyValue("namespace", config.getNamespace());
            values.addPropertyValue("servers", config.getServers());
            values.addPropertyValue("config", config.getConfig()); //=>if i remove this line of code,everything is working.
            beanDefinition.setPropertyValues(values);
            registry.registerBeanDefinition(config.getNamespace(), beanDefinition);
        }
    }
    @Override
    public void setEnvironment(Environment environment) {
        String propertiesName = Objects.requireNonNull(AnnotationUtils.getAnnotation(AksoMqConfiguration.class, ConfigurationProperties.class)).prefix();
        configuration = Binder.get(environment).bind(propertiesName, AksoMqConfiguration.class).get();
    }
}

[snicoll]

The method must be static, yet and Whoever is generating that code should take that into account. Considering we're not the ones generating this code, I am going to close this. Please report that to them.

[woderchen]

Thanks for your comments. I noticed that the code was generated by spring-boot-maven-plugin. Could you please tell me which team I should report this to?

[snicoll]

I noticed that the code was generated by spring-boot-maven-plugin.

It does not. The plugin invokes Spring AOT and components are contributing code. As I've mentioned before, we're not contributing that code. I don't know what AksoMq is but it very much looks like they have a broken AOT integration.

[woderchen]

AksoMqConfiguration is a configuration class used to read parameters from application.yml. It is the only class of its kind in my project. The nested class MqConfig within AksoMqConfiguration is also defined to handle specific parameters from application.yml. The map property in MqConfig is populated with actual values from the YML file. However, when Spring AOT starts, the getMqMap() method is generated as a non-static method.

[snicoll]

@woderchen I don't know how else to tell you we do not generate that code. Please get in touch with AskoMQ, whatever that is.

[snicoll]

Ugh. I just saw something that Spring Framework does that could be related only if the map is a LinkedHashMap which explains why this could have been left unnoticed. I'll create an issue there to investigate.

@woderchen sorry about that and please subscribe to spring-projects/spring-framework#34659

[woderchen]

No worries, thanks for looking into it!