spring bean programmatically register to web applicaton context

제목 그대로 빈을 등록합니다.

2번의 경우 Object만 property setting이 가능하므로, 3번 구현 예가 실제 상황에선 더 적합합니다.

Spring 3.1.1에서 테스트되었으며, cglib dependancy가 필요합니다.

 

1. controller 예 
   

   @Controller
   public class TestController {
   
   	private static final Logger LOG = LoggerFactory.getLogger(TestController.class);
   
   	@RequestMapping(value="/test.action")
   	public void dummyMethod(HttpServletRequest request) throws Exception {
   		LOG.debug("{} ----------------------------> {}",getClass(),request);
   	}
   }

2. 구현 예 1
   

   @Configuration
   public class beanRegister implements BeanDefinitionRegistryPostProcessor {
   
   	public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {}
   
   	public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
   
   		BeanDefinition beanDefinition = new RootBeanDefinition(TestController.class, Autowire.BY_TYPE.value(), true);
   		beanDefinition.setAttribute("propertyName", ref-object);
   		registry.registerBeanDefinition("testController", beanDefinition);
   	}
   }

3. 구현 예 2

   @Configuration
   public class beanRegister implements BeanDefinitionRegistryPostProcessor {
   
   	public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {}
   
   	public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
   
   		GenericBeanDefinition beanDefinition = new GenericBeanDefinition();
   		beanDefinition.setBeanClass(TestController.class);
   		beanDefinition.setAutowireMode(Autowire.BY_TYPE.value());
   		beanDefinition.setDependencyCheck(1);
   		beanDefinition.setAutowireCandidate(false);
   
   		MutablePropertyValues values = new MutablePropertyValues();
   
   		values.addPropertyValue(new PropertyValue("propertyName", ref-object));
   		values.addPropertyValue(new PropertyValue("propertyName2", "value"));
   
   		beanDefinition.setPropertyValues(values);
   		registry.registerBeanDefinition("testController", beanDefinition);
   	}
   }

4. mvc dispatcher에 bean을 설정합니다.