当spring 容器初始化完成后执行某个方法

package com.yk.test.executor.processor;

import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;

public class InstantiationTracingBeanPostProcessor implements ApplicationListener<ContextRefreshedEvent> {

	public void onApplicationEvent(ContextRefreshedEvent event) {
		if (event.getApplicationContext().getParent() == null) {// root
			System.out.println("=====================================");
			System.out.println("============spring 初始化完成===========");
			System.out.println("============spring 初始化完成===========");
			System.out.println("=====================================");
		}
	}

}

application.xml配置（spring3.1）

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

	<!-- 自动扫描的包名 -->
	<context:component-scan base-package="com.techbirds.controller"></context:component-scan>
	<!-- spirng 初始化完成执行-->
	<bean class="com.yk.test.executor.processor.InstantiationTracingBeanPostProcessor"/>  
	<!-- 默认的注解映射的支持 -->
	<mvc:annotation-driven />
	<!-- 视图解释类 -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/" />
		<!--可为空,方便实现自已的依据扩展名来选择视图解释类的逻辑 -->
		<property name="suffix" value=".jsp" />
	</bean>


</beans>

注解方式

import org.apache.log4j.Logger;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.impl.StdSchedulerFactory;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.stereotype.Component;

@Component
public class InstantiationTracingBeanPostProcessor implements ApplicationListener<ContextRefreshedEvent> {

	private static Logger logger =Logger.getLogger(InstantiationTracingBeanPostProcessor.class);
	@Override
	public void onApplicationEvent(ContextRefreshedEvent event) {
		//if (event.getApplicationContext().getParent() == null) {// root
			try {
				logger.info("★★★★★★★★★★★★★★★★★★★★★★★★★★★");
				logger.info("============quartz 初始化完成===========");
				logger.info("★★★★★★★★★★★★★★★★★★★★★★★★★★★");
				Scheduler scheduler = new StdSchedulerFactory().getScheduler();
				scheduler.start();
			} catch (SchedulerException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}			
		//}

	}

}

单元测试时，初始化spring容器，阻塞进程结束，测试定时任务

@Test
public void initSpirng(){
	int num = -1;
	System.out.print("Please input a number:");
	Scanner sc = new Scanner((System.in));  //键盘输入
	num = sc.nextInt();
	System.err.println(num);
}

定时任务

@Scheduled(cron="0/5 * *  * * ? ")   //每5秒执行一次
public void myTest(){
	System.out.println("...spring容器不关闭，这样子就可以看定时任务效果...");
}