spring中ApplicationListener的用法

1、實現ApplicationListener接口，並重寫onApplicationEvent方法

@Component
public class RSAKeyInitListener implements ApplicationListener<ContextRefreshedEvent> {
	
	@Autowired
	BaseAppConfigDao baseAppConfigDao;

	@Override
	public void onApplicationEvent(ContextRefreshedEvent event) {
		//具體操作
        }  
}

2、創建spring的應用上下文（ApplicationContext.xml），並配置注解掃描

<context:component-scan base-package="com.xxx.xxx.facex.listener" />

3、配置web.xml

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

<!-- 也可以與context-param標簽一起使用 -->

　　 <context-param> <param-name>contextConfigLocation</param-name> <param-value> classpath:spring.xml </param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener>