AMQ结合spring
Spring提供了对JMS的支持,需要添加Spring支持jms的包,如下:
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>4.1.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-pool</artifactId>
<version>5.11.1</version>
</dependency>
然后需要在Spring的配置文件中,配置jmsTemplate,示例如下:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="jmsFactory" class="org.apache.activemq.pool.PooledConnectionFactory"
destroy-method="stop">
<property name="connectionFactory">
<bean class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL">
<value>tcp://192.168.1.55:61616</value>
</property>
</bean>
</property>
<property name="maxConnections" value="100"></property>
</bean>
<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
<property name="connectionFactory" ref="jmsFactory" />
<property name="defaultDestination" ref="destination" />
<property name="messageConverter">
<bean class="org.springframework.jms.support.converter.SimpleMessageConverter" />
</property>
</bean>
<bean id="destination" class="org.apache.activemq.command.ActiveMQQueue">
<constructor-arg index="0" value="spring-queue" />
</bean>
</beans>
queue消息发送
package com.qiuxm.myweb.service.jms;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.jms.core.MessageCreator;
import org.springframework.stereotype.Service;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;
import javax.jms.TextMessage;
/**
* Created by Administrator on 2015/6/2.
*/
@Service
public class QueueSender {
@Autowired
private JmsTemplate jt = null;
public static void main(String[] args) throws Exception{
ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
QueueSender ct = (QueueSender)ctx.getBean("queueSender");
ct.jt.send(new MessageCreator() {
public Message createMessage(Session s) throws JMSException {
TextMessage msg = s.createTextMessage("Spring msg===");
return msg;
}
});
}
}
queue消息接收
package com.qiuxm.myweb.service.jms;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.stereotype.Service;
/**
* Created by Administrator on 2015/6/2.
*/
@Service
public class QueueReceive {
@Autowired
private JmsTemplate jt = null;
public static void main(String[] args) throws Exception {
ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
QueueReceive ct = (QueueReceive)ctx.getBean("queueReceive");
String msg = (String)ct.jt.receiveAndConvert();
System.out.println("msg==="+msg);
}
}
如果topic的话,首先需要修改spring的配置:
先添加topic的配置,当然,需要修改jmsTemplate配置里面的defaultDestination,如果不想修改这个配置,那么直接把Destination注入程序,在程序里面选择发送的Destination也可以配置其他的客户端发送和接收跟队列基本是一样的。
如果想要在Spring中配置消费者的话,就不需要再启动接收的客户端了
当然,需要写一个类来实现消息监听
这样测试的时候,只需要启动消息生产者就好了
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="jmsFactory" class="org.apache.activemq.pool.PooledConnectionFactory"
destroy-method="stop">
<property name="connectionFactory">
<bean class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL">
<value>tcp://192.168.1.55:61616</value>
</property>
</bean>
</property>
<property name="maxConnections" value="100"></property>
</bean>
<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
<property name="connectionFactory" ref="jmsFactory" />
<property name="defaultDestination" ref="destinationTopic" />
<property name="messageConverter">
<bean class="org.springframework.jms.support.converter.SimpleMessageConverter" />
</property>
</bean>
<bean id="destination" class="org.apache.activemq.command.ActiveMQQueue">
<constructor-arg index="0" value="spring-queue" />
</bean>
<bean id="destinationTopic" class="org.apache.activemq.command.ActiveMQTopic">
<constructor-arg index="0" value="spring-topic" />
</bean>
<bean id="jmsContainer" class="org.springframework.jms.listener.DefaultMessageListenerContainer">
<property name="connectionFactory" ref="jmsFactory" />
<property name="destination" ref="destinationTopic" />
<property name="messageListener" ref="messageListener" />
</bean>
<bean id="messageListener"
class="com.qiuxm.myweb.web.controller.lister.MyMessageListener">
</bean>
</beans>
package com.qiuxm.myweb.web.controller.lister;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;
/**
* Created by Administrator on 2015/6/2.
*/
public class MyMessageListener implements MessageListener {
public void onMessage(Message arg0) {
TextMessage msg = (TextMessage)arg0;
try {
System.out.println("receive txt msg==="+msg.getText());
} catch (JMSException e) {
e.printStackTrace();
}
}
}
ActiveMQ结合Spring开发最佳实践和建议
1:Camel框架支持大量的企业集成模式,可以大大简化集成组件间的大量服务和复杂的消息流。而Spring框架更注重简单性,仅仅支持基本的最佳实践。
2:Spring消息发送的核心架构是JmsTemplate,隔离了像打开、关闭Session和Producer的繁琐操作,因此应用开发人员仅仅需要关注实际的业务逻辑。但是
JmsTemplate损害了ActiveMQ的PooledConnectionFactory对session和消息producer的缓存机制而带来的性能提升。
3:新的Spring里面,可以设置org.springframework.jms.connection.CachingConnectionFactory的sessionCacheSize ,或者干脆使用ActiveMQ的PooledConnectionFactory
4:不建议使用JmsTemplate的receive()调用,因为在JmsTemplate上的所有调用都是同步的,这意味着调用线程需要被阻塞,直到方法返回,这对性能影响很大
5:请使用DefaultMessageListenerContainer,它允许异步接收消息并缓存session和消息consumer,而且还可以根据消息数量动态的增加或缩减监听器的数量