spring 事件机制demo

理论知识不多讲，自行度娘。直接上代码，如下。

package com.xx.service.event;

import org.springframework.context.ApplicationEvent;

/**
 * @author xuyw
 * @version V1.0
 * @Description:
 * @date 2017-09-11 下午 2:01
 */
public class DmpEvent extends ApplicationEvent {
	private static final long serialVersionUID = 1L;
	/**
	 * 发送事件类型
	 */
	private EventEnum eventType;
	/**
	 * 发送的消息可发送json字符串
	 */
	private String msg;

	public DmpEvent(Object source, EventEnum eventType, String msg) {
		super(source);
		this.eventType = eventType;
		this.msg = msg;
	}

	public EventEnum getEventType() {
		return eventType;
	}

	public void setEventType(EventEnum eventType) {
		this.eventType = eventType;
	}

	public String getMsg() {
		return msg;
	}

	public void setMsg(String msg) {
		this.msg = msg;
	}

	public static enum EventEnum {
		BIND_EQU("绑定设备"), UNBIND_EQU("解绑设备");

		EventEnum(String desc) {
			this.desc = desc;
		}

		private String desc;

		public String getDesc() {
			return desc;
		}

		public void setDesc(String desc) {
			this.desc = desc;
		}
	}
}

package com.xx.service.event;

import java.util.List;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationListener;
import org.springframework.stereotype.Component;

import com.xx.CollectionUtil;
import com.xx.dao.mapper.bo.TEquUserRel;
import com.xx.service.atom.interfaces.ITEquUserRelAtomSV;
import com.xx.service.atom.interfaces.ITEquipmentAtomSV;

/**

@author xuyw

@version V1.0

@Description:

@date 2017-09-11 下午 2:09
*/
@Component
public class DmpListener implements ApplicationListener {
private static final Logger LOG = LogManager.getLogger(DmpListener.class);
@Autowired
ITEquipmentAtomSV iTEquipmentAtomSV;
@Autowired
ITEquUserRelAtomSV iTEquUserRelAtomSV;

@Override
//@Async
public void onApplicationEvent(DmpEvent event) {
DmpEvent.EventEnum eventType = event.getEventType();
String msg = event.getMsg();
LOG.info(“DmpListener收到事件监听：–>”);
LOG.info(“事件类型：” + eventType.getDesc());
LOG.info(“事件内容：” + msg);
switch (eventType) {
case BIND_EQU:
iTEquipmentAtomSV.updateEquBindStatus(msg, “1”);
break;
case UNBIND_EQU:
List list = iTEquUserRelAtomSV
.queryEquUserRelByImei(msg);
if (CollectionUtil.isEmpty(list)) {
// 没有绑定的设备
iTEquipmentAtomSV.updateEquBindStatus(msg, “0”);
}
break;
}
}
}

package com.xx.service.event;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Component;

/**
 * @author xuyw
 * @version V1.0
 * @Description:
 * @date 2017-09-11 下午 1:56
 */
@Component
public class DmpPublisher {
    @Autowired
    ApplicationContext applicationContext;

    public void publishDmpEvent(DmpEvent.EventEnum eventType, String msg){
        applicationContext.publishEvent(new DmpEvent(this,eventType,msg));
    }
}