How do I specify a BeanNamingStrategy with Spring Boot?

You can also use @ComponentScan(nameGenerator = ...) annotation on your main Spring Boot application class:

@SpringBootApplication
@ComponentScan(nameGenerator = FullyQualifiedAnnotationBeanNameGenerator.class)
public class MyApplication {

    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }
}

The SpringApplicationBuilder has a method beanNameGenerator() that lets you pass in a custom generator.

See 22.3 Fluent builder API in the Spring Boot reference for how to work with the fluent API.

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Unfortunately this doesn't help you, as this only applies to @Component-style class annotations and not to @Bean methods, for which the names are hard coded using this method.