Creating Bean inside Spring boot application using command line runner

Question

@SpringBootApplication
public class ReactiveCouchbaseExample1Application  {
     
    @Bean
    CommandLineRunner employees(ApplicationContext context) {
        EmployeeRepository repository = context.getBean(EmployeeRepository.class);
        return args -> {
            repository
                .deleteAll()
                .subscribe(null,null,()->{
                    Stream.of(new Employees(UUID.randomUUID().toString(), "Nikhil", 23, 3000L),
                            new Employees(UUID.randomUUID().toString(), "Shubham", 23, 3000L),
                            new Employees(UUID.randomUUID().toString(), "Anshul", 23, 3000L))
                    .forEach(employee->{
                        repository.save(employee)
                        .subscribe(System.out::println);
                    });
                });
        };
    }
     
    public static void main(String[] args) {
        SpringApplication.run(ReactiveCouchbaseExample1Application.class, args);
    }

I wants to run this piece of logic as soon my application context get loaded but when i started my app it shows this error.

Method employees in com.reactive.reactivecouchbaseexample1.ReactiveCouchbaseExample1Application required a bean of type 'com.reactive.repository.EmployeeRepository' that could not be found.

Can someone tell me how can I create a repository bean inside CommandLineRunner. I also googled it but could'nt find any answers.

This is my repository

@Repository
public interface EmployeeRepository extends 
ReactiveCouchbaseRepository<Employees, String>{ 
}

Does this answer your question? ['Field required a bean of type that could not be found.' error spring restful API using mongodb](https://stackoverflow.com/questions/42907553/field-required-a-bean-of-type-that-could-not-be-found-error-spring-restful-ap) — Abhijit Sarkar, Jul 02 '23 at 02:41
@Manuel Jordan 'asked Nov 6, 2018'. Pls do not edit dead posts :) — Artem Lisun, Jul 02 '23 at 02:44

score 1 · Answer 1 · answered Dec 18 '18 at 20:06

1

Scanned component must be in the same package as @SpringBootApplication annotated class, or its subpackage. I can only assume it is ReactiveCouchbaseExample1Application.class.

Maybe your repo is in different package, or you didn't enable component scan with @SpringBootApplication or @ComponentScan.

answered Dec 18 '18 at 20:06

Antoniossss

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It’d be much better to ask clarifying questions than make assumptions, no matter how logical, as to what the problem might be. – Abhijit Sarkar Jul 02 '23 at 02:40
@AbhijitSarkar it's not an assumption - you could tell this is true by looking at his error – Artem Lisun Jul 02 '23 at 02:42
@ArtemLisun Not really. It is just as likely that the target class exists on the component scan path but isn’t a bean at all. That is, it doesn’t extend `Repository` or use one of bean markers. – Abhijit Sarkar Jul 02 '23 at 02:44
@AbhijitSarkar Low chance of that, but yea, you're right, it could be. – Artem Lisun Jul 02 '23 at 02:47
@ArtemLisun We aren’t here to play Bingo, thus my earlier comment. It’s unwise to answer a question using a bunch of assumptions as basis. – Abhijit Sarkar Jul 02 '23 at 02:50

Creating Bean inside Spring boot application using command line runner

1 Answers1