jfinal中ActiveMQ的简单使用

参考官网分享文档：http://www.jfinal.com/share/77

本次MQ主要是用于接口调用的同时，异步发送邮件，因此直接使用点对点方式，具体实现如下：
依赖：

<dependency>
    <groupId>org.apache.activemq</groupId>
    <artifactId>activemq-all</artifactId>
    <version>5.13.4</version>
</dependency>
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-pool2</artifactId>
    <version>2.7.0</version>
</dependency>

工具类：

package com.solomo.controller.activemq;

import java.util.concurrent.ConcurrentHashMap;
import org.apache.activemq.pool.PooledConnection;

public class ActiveMQ {

	public static final ConcurrentHashMap<String, PooledConnection> pooledConnectionMap = new ConcurrentHashMap<>();

	public static void addConnection(String connectionName, PooledConnection connection) {
		pooledConnectionMap.put(connectionName, connection);
	}

	public static PooledConnection getConnection(String connectionName) {
		return pooledConnectionMap.get(connectionName);
	}
}

ActiveMQ插件：

package com.solomo.controller.activemq;

import javax.jms.JMSException;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.pool.PooledConnection;
import org.apache.activemq.pool.PooledConnectionFactory;

import com.jfinal.plugin.IPlugin;

public class ActiveMQPlugin implements IPlugin {

	public static final String BROKER_URL = "tcp://***.**.***.***:61616";
	public static final String QUEUE_NAME = "sendMail";

	@Override
	public boolean start() {
		ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory();
		activeMQConnectionFactory.setUserName(ActiveMQConnection.DEFAULT_USER);
		activeMQConnectionFactory.setPassword(ActiveMQConnection.DEFAULT_PASSWORD);
		activeMQConnectionFactory.setBrokerURL(BROKER_URL);
		activeMQConnectionFactory.setDispatchAsync(true);// 异步发送消息
		
		PooledConnectionFactory pooledConnectionFactory = new PooledConnectionFactory(activeMQConnectionFactory);
		pooledConnectionFactory.setMaximumActiveSessionPerConnection(200);
		pooledConnectionFactory.setIdleTimeout(120);
		pooledConnectionFactory.setMaxConnections(5);
		pooledConnectionFactory.setBlockIfSessionPoolIsFull(true);
		try {
			PooledConnection connection = (PooledConnection) pooledConnectionFactory.createConnection();
			connection.start();
			ActiveMQ.pooledConnectionMap.put(QUEUE_NAME, connection);
			new JmsReceiver(connection, QUEUE_NAME);
		} catch (JMSException e) {
			e.printStackTrace();
		}
		return true;
	}

	@Override
	public boolean stop() {
		return true;
	}
}

生产者：

package com.solomo.controller.activemq;

import javax.jms.*;

import org.apache.activemq.pool.PooledConnection;

public class JmsSender {

	private Session session;
	private MessageProducer producer;

	public JmsSender(PooledConnection connection, String subject) throws JMSException {
		// 事务性会话，自动确认消息
		session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
		// 消息的目的地
		Queue queue = session.createQueue(subject);
		producer = session.createProducer(queue);
	}

	public Session getSession() {
		return session;
	}

	public void sendMessage(Message message) throws JMSException {
		producer.send(message);
	}
}

消费者：

package com.solomo.controller.activemq;

import java.util.Arrays;
import javax.jms.*;
import org.apache.activemq.pool.PooledConnection;
import com.jfplugin.mail.MailKit;

public class JmsReceiver implements MessageListener {

	public JmsReceiver(PooledConnection connection, String subject) throws JMSException {
		// 事务性会话，自动确认消息
		Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
		// 消息的目的地
		Queue queue = session.createQueue(subject);
		MessageConsumer consumer = session.createConsumer(queue);
		consumer.setMessageListener(this);
	}

	@Override
	public void onMessage(Message message) {
		if (message != null && message instanceof MapMessage) {
			MapMessage msg = (MapMessage) message;
			String nickName = null;
			String opinions = null;
			try {
				nickName = msg.getString("nickName");
				opinions = msg.getString("opinions");
			} catch (Exception e) {
				e.printStackTrace();
			}
			if (nickName != null && opinions != null) {
				MailKit.send("*********@qq.com", Arrays.asList("*********@qq.com"), "意见反馈_"+nickName, opinions);
			}
		}
	}
}

配置文件中配置插件：

// 配置消息中间件
ActiveMQPlugin activeMQPlugin = new ActiveMQPlugin();
me.add(activeMQPlugin);

使用：

JmsSender sender = new JmsSender(ActiveMQ.getConnection("sendMail"), ActiveMQPlugin.QUEUE_NAME);
MapMessage mapMessage = sender.getSession().createMapMessage();
mapMessage.setString("nickName", user.getStr("nickName"));
mapMessage.setString("opinions", opinions);
sender.sendMessage(mapMessage);