Hello Activemq

0. 如果永远是localhost 可能一直low下去

1.下载安装 activemq

1.1 从官网下载activemq.tar.gz 并上传(rz)到linux系统 并解压 tar zxvf /*/activemq.tar.gz , activemq依赖jdk maven

1.2 进入activemq_home\bin 目录 ./activemq start 启动activemq, 验证ps -ef|grep activemq

http://localhost:8161/admin admin/admin 进入配置页

1.3 todo:  jdk  activemq 怎么直接在linux下载, wget curl之类命令对应的url不知道

2. 创建maven工程

2.1 pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.rocky.demo</groupId>
  <artifactId>activemaStar</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>activemaStar</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <spring-version>4.3.10.RELEASE</spring-version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jms</artifactId>
            <version>${spring-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring-version}</version>
        </dependency>
        <dependency>
            <groupId>javax.annotation</groupId>
            <artifactId>jsr250-api</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.activemq</groupId>
            <artifactId>activemq-core</artifactId>
            <version>5.7.0</version>
        </dependency>
  </dependencies>
</project>

2.2 spring配置文件(applicationContext.xml)

<?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:jms="http://www.springframework.org/schema/jms"
    xsi:schemaLocation="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
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/jms http://www.springframework.org/schema/jms/spring-jms-3.0.xsd">  

    <context:component-scan base-package="com.rocky" />  

   <bean id="jndiTemplate" class="org.springframework.jndi.JndiTemplate">
        <property name="environment">
            <props>
                <prop key="java.naming.factory.initial">
                    org.apache.activemq.jndi.ActiveMQInitialContextFactory
                </prop>
                <prop key="brokerURL">tcp://192.168.*.*:61616</prop>
                <prop key="connectionFactoryNames">ConnectionFactory</prop>
            </props>
        </property>
    </bean>
    <bean id="connectionFactory" class="org.springframework.jndi.JndiObjectFactoryBean">
        <property name="jndiName" value="ConnectionFactory" />
        <property name="jndiTemplate" ref="jndiTemplate" />
    </bean>
    <!-- Spring提供的JMS工具类，它可以进行消息发送、接收等 -->
    <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
        <!-- 这个connectionFactory对应的是我们定义的Spring提供的那个ConnectionFactory对象 -->
        <property name="connectionFactory" ref="connectionFactory"/>
    </bean>  

    <!-- 真正可以产生Connection的ConnectionFactory，由对应的 JMS服务厂商提供-->
<!--     <bean id="targetConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
        <property name="brokerURL" value="tcp://192.168.*.8:61616"/>
    </bean>   -->

    <!-- Spring用于管理真正的ConnectionFactory的ConnectionFactory -->
<!--     <bean id="connectionFactory" class="org.springframework.jms.connection.SingleConnectionFactory">
        目标ConnectionFactory对应真实的可以产生JMS Connection的ConnectionFactory
        <property name="targetConnectionFactory" ref="targetConnectionFactory"/>
    </bean>  --> 

    <!--这个是队列目的地-->
    <bean id="queueDestination" class="org.apache.activemq.command.ActiveMQQueue">
        <constructor-arg>
            <value>queue</value>
        </constructor-arg>
    </bean>
    <!-- 消息监听器 -->
    <bean id="consumerMessageListener" class="com.rocky.demo.activemaStar.ConsumerMessageListener"/>
    <!-- 消息监听容器 -->
    <bean id="jmsContainer"
        class="org.springframework.jms.listener.DefaultMessageListenerContainer">
        <property name="connectionFactory" ref="connectionFactory" />
        <property name="destination" ref="queueDestination" />
        <property name="messageListener" ref="consumerMessageListener" />
    </bean>
</beans>  

2.3 生产者接口(ProducerService)

package com.rocky.demo.activemaStar;

import javax.jms.Destination;

public interface ProducerService {

    public void sendMessage(Destination destination, final String message);
}

及实现类(ProducerServiceImpl)

package com.rocky.demo.activemaStar;

import javax.annotation.Resource;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;

import org.springframework.jms.core.JmsTemplate;
import org.springframework.jms.core.MessageCreator;
import org.springframework.stereotype.Component;

@Component
public class ProducerServiceImpl implements ProducerService {  

    private JmsTemplate jmsTemplate;  

    public void sendMessage(Destination destination, final String message) {
        System.out.println("---------------生产者发送消息-----------------");
        System.out.println("---------------生产者发了一个消息：" + message);
        jmsTemplate.send(destination, new MessageCreator() {
            public Message createMessage(Session session) throws JMSException {
                return session.createTextMessage(message);
            }
        });
    }   

    public JmsTemplate getJmsTemplate() {
        return jmsTemplate;
    }   

    @Resource
    public void setJmsTemplate(JmsTemplate jmsTemplate) {
        this.jmsTemplate = jmsTemplate;
    }  

} 

2.4 消费者监听

package com.rocky.demo.activemaStar;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;

public class ConsumerMessageListener implements MessageListener {

    public void onMessage(Message message) {
        //这里我们知道生产者发送的就是一个纯文本消息，所以这里可以直接进行强制转换
        TextMessage textMsg = (TextMessage) message;
        System.out.println("接收到一个纯文本消息。");
        try {
            System.out.println("消息内容是：" + textMsg.getText());
        } catch (JMSException e) {
            e.printStackTrace();
        }
    }

}

2.5 junit测试类

package com.rocky.demo.activemaStar;

import javax.jms.Destination;  

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import com.rocky.demo.activemaStar.ProducerService;  

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/applicationContext.xml")
public class ProducerConsumerTest {  

    @Autowired
    private ProducerService producerService;
    @Autowired
    @Qualifier("queueDestination")
    private Destination destination;  

    @Test
    public void testSend() {
        for (int i=0; i<2; i++) {
            producerService.sendMessage(destination, "你好，生产者！这是消息：" + (i+1));
        }
    }  

}  

2.6 运行控制台

---------------生产者发送消息-----------------
---------------生产者发了一个消息：你好，生产者！这是消息：1
接收到一个纯文本消息。
消息内容是：你好，生产者！这是消息：1
---------------生产者发送消息-----------------
---------------生产者发了一个消息：你好，生产者！这是消息：2
接收到一个纯文本消息。
消息内容是：你好，生产者！这是消息：2

2.7 回头看 localhost怎么了

上面的程序在localhost环境下是ok的 把activemq部署到另外一台机器 控制台没反应 ?

最后反应过来 是防火墙！！！

firewall-cmd --add-port=8161/tcp

firewall-cmd --add-port=61616/tcp 这是临时生效

firewall-cmd --permanent --add-port=61616/tcp写入配置文件

firewall-cmd --reload 重启防火墙

这样子 hello activemq才好了。