How to autowire a member variable inside a class which is not maintained by spring container?

Question

In my jsp, I have a custom tag

 <ex:SelfService />

which intrun calls the java class

public class SelfServiceClass extends SimpleTagSupport{

@Autowired
 private ReloadablePropertyManagerImpl reloadableProperty;


public ReloadablePropertyManagerImpl getReloadableProperty() {
    return reloadableProperty;
}

public void setReloadableProperty(
        ReloadablePropertyManagerImpl reloadableProperty) {
    this.reloadableProperty = reloadableProperty;
}

public void doTag() throws IOException {
    JspWriter out = getJspContext().getOut();
    out.println(getReloadableProperty().getPropertyValue("print.service"));
  }
}

And in my spring.xml I have configured the bean,

 <bean id="reloadableProperty" class="com.testing.portal.util.ReloadablePropertyManagerImpl" />

But I am getting null pointer exception when I call getPropertyValue() on reloadableProperty object. Any help will be much appreciated.

Answer 1

Since your class is not managed by Spring you have to load the ReloadablePropertyManagerImpl from the application context by yourself. In order to do so you should create a class which implements ApplicationContextAware with a static getter for the context.

See more in this sample .

Answer 2

Is Spring aware of SelfServiceClass class? It has to be. You either annotate it with @Component or it is returned by a @Configuration as a @Bean or include it as you did with reloadebleProperty in the xml, ie: make it a spring managed bean