Spring MVC: Designing Real-World Web Applications

Hooking to bean life cycles

Often, in enterprise application development, developers will want to plug in some extra functionality to be executed just after the construction and before the destruction of a business service. Spring provides multiple methods for interacting with such stages in the life cycle of a bean.

Implementing InitializingBean and DisposableBean

The Spring IoC container invokes the callback methods afterPropertiesSet() of org.springframework.beans.factory.InitializingBean and destroy() of org.springframework.beans.factory.DisposableBean on any Spring bean and implements them:

public class UserServiceImpl implements UserService, InitializingBean, DisposableBean { ... @Override public void afterPropertiesSet() throws Exception { ...