@Autowired in ServletContextListener

Question

i hava aclass InitApp

@Component
public class InitApp implements ServletContextListener {

@Autowired
ConfigrationService weatherConfService;

/** Creates a new          


        

Answer 1

As others have said this listener observes by the web servlet(tomcat) context (Not the Spring Container) and is notified of servlet startup/shutdown.

Since it is created by the servlet outside of the Spring container it is not managed by Spring hence @Autowire members is not possible.

If you setup your bean as a managed @Component then Spring will create the instance and the listener wont register with the external servlet.

You cannot have it both ways..

One solution is the remove the Spring annotations and manually retrieve your member from the Spring Application context and set your members that way.

ie

    public class InitApp implements ServletContextListener {

        private ConfigrationService weatherConfService;

        private static ApplicationContext   applicationContext  = new ClassPathXmlApplicationContext("classpath:web-context.xml");

        @Override
        public void contextInitialized(ServletContextEvent servletContextEvent) {
            weatherConfService = applicationContext.getBean(ConfigrationService.class);
            System.out.println(weatherConfService);
        }

        @Override
        public void contextDestroyed(ServletContextEvent servletContextEvent) {
        }
    }