Autowired bean is null in thread location

Question

how can I access to exampleService from the thread ? In new thread is null. ExampleService is an annotated @Service class. SessionFactory I set from dao and it is no null.

public class ExampleInterceptor extends EmptyInterceptor {

    private Logger logger = Logger.getLogger(getClass());

    private static final long serialVersionUID = 1L;

    @Autowired
    SessionFactory sessionFactory;

    @Autowired
    ExampleService exampleService;

    public void setExampleService(ExampleService exampleService) {
        this.exampleService = exampleService;
    }

    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    public void afterTransactionCompletion(Transaction tx) {
        new Thread(new SimpleThread(exampleService)).start();
    }

    protected class SimpleThread implements Runnable {
    protected ExampleService exampleService;

        public SimpleThread() {
        };
        public SimpleThread(ExampleService exampleService) {
      this.exampleService = exampleService;
        }
        @Override
        public void run() {
                    exampleService.method(); // is null at this location                        
        }

    }

}

Is `ExampleInterceptor ` also anotated as Controler or Service? Do youhave the `context:scan` activated in your config? — Jens, Sep 01 '14 at 12:23
yes, class is in context scan path, exampleInterceptor is not annotated — kxyz, Sep 01 '14 at 12:25
It is empty to begin with in the first place. The `EmptyInterceptor` isn't a Spring managed bean but managed by Hibernate. This results in `@Autowired` not being processed. — M. Deinum, Sep 01 '14 at 12:54

score 1 · Accepted Answer · edited May 23 '17 at 12:05

1

You need to Annotate the Service Class with @Service, And for using that object you need to Autowire it. If i am not wrong, In your "SimpleThread" class, you are using not autowiring the property "protected ExampleService exampleService", which is a not having @Autowired annotation. @Service, @Controller, @Repository & @Component

edited May 23 '17 at 12:05

Community

1
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answered Sep 01 '14 at 17:33

Benoy Prakash

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Autowired bean is null in thread location

1 Answers1