I need to use the beans created in a jar file to be used in my main application. I tried auto-wiring it but I am getting null object

Question

I have a ID Generator application which will be packaged as a Jar, I have some beans created which needs to be used in my Main application. I am not able to inject the beans from my Jar into my main application. Can anyone please point me in the right direction on how to achieve this?

Answer 1

The easiest way would be to declare the bean in your Main application in a configuration class.

@Configuration
public class MyConfig {

   @Bean
   public MyBean myBean {
        return new MyBean();
   }

}

or

@SpringBootApplication
public class MyApplication {

   @Bean
   public MyBean myBean {
        return new MyBean();
   }

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

}

Now MyBean can be autowired in as a dependency.

@Service
public class MyService {

   @Autowired
   MyBean myBean;

}