如何从线程访问exampleService?在新线程中为null。 ExampleService是带注释的@Service类。我从dao设置的SessionFactory,它不是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
}
}
}
最佳答案
您需要使用@Service注释服务类,并且要使用该对象,需要对其进行自动装配。
如果我没看错,在您的“ SimpleThread”类中,您正在使用不自动装配属性
“受保护的ExampleService exampleService”,它没有@Autowired批注。
@Service, @Controller, @Repository & @Component