监听器Listener中使用Spring创建的bean

package com.dxcollector.spider;

import java.util.Timer;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
/**
 * 任务监听器
 * 
 * @author 忧里修斯
 *
 */
public class TaskListener implements ServletContextListener {
	
	
	public void contextDestroyed(ServletContextEvent context) {
	}

	public void contextInitialized(ServletContextEvent context) {
		
		ServletContext servletContext = context.getServletContext();
		WebApplicationContext wac = WebApplicationContextUtils.getRequiredWebApplicationContext(servletContext);
		SheduleTask sheduleTask = (SheduleTask) wac.getBean("sheduleTask");
		Timer timer = new Timer();
		//每隔30分钟执行一次
//		timer.schedule(new SheduleTask(), 0,1000*60*30);
		timer.schedule(sheduleTask, 0,1000*60*30);
	}

}