java 定义spring bean的init和destroy方法（1.使用PostConstruct和PreDestroy注释2.在web.xml中定义3.实现In

Posted 2021-05-08

<bean id="foo" class="com.wiley.beginningspring.ch2.Foo" init-method="init" destroy-method="destroy"/>

public class Baz implements InitializingBean, DisposableBean {  @Override  public void afterPropertiesSet() throws Exception {    System.out.println("init method invoked");   }    @Override  public void destroy() throws Exception {    System.out.println("destroy method invoked");   }}

// Need to have <context:annotation-config/> in the web.xml

public class Bar { 
  @PostConstruct
  public void init() throws Exception { 
    System.out.println("init method is called");
  }
  
  @PreDestroy
  public void destroy() throws RuntimeException {
    System.out.println("destroy method is called"); 
  }
}