基于ActiveMQ的Topic的数据同步——初步实现

一、背景介绍

公司自成立以来，一直以做项目为主，算是经累经验吧，自去年以来，我们部门准备将以前的项目做成产品，大概细分了几个小的产品，部们下面又分了几个团队，分别负责产品的研发，而我们属于平台团队，负责公用组件、开发平台的研发。

前期各个项目组使用的技术、框架等都不一样，想把技术、框架统一起来比较困难，并且在早期项目研发的时，各自为战，没有形成合力，有些共性的东西，都是各自做自己的，现在转将项目做成产品时，首先就是要将共性的东西，抽取出来，做成组件，通过SOA架构，将组件的服务和能力暴露出来，提高组件的重用性，例如邮件服务，任务一个产品或者系统通过标准的接口，即可发送邮件，不需要重新编写邮件的代码，短信服务、权限服务等

由于几个项目之间有些数据是共有的，例如人员、组织，HR系统已经有人员、组织的功能，在做其它项目时，人员、组织也需要，例如4A平台，这就需要将人员、组织的数据同步，将来的目标，是由ESB同步，由于时间紧，暂时选择了ActiveMQ的方式，HR系统中的人员、组织的数据项很多，而其它系统需要的很少，可能只需要人员和组织的名称及其标识列，并且数据量不大，不会一次性发送上百个人员或者组织的信息，基于这个考虑，通过将人员、组织信息的数据放在消息内放到消息中件上，各个系统通过订阅的方式获取消息中的数据。

二、实现

1、安装ActiveMQ

到ActiveMQ的官方网站下载ActiveMQ，我下载的5.7.0版，解压，例如D盘，打开bin目录，执行acticemq.bat，启动ActiveMQ。

我是基于spring编写的，新建两个Java工程，将Spring和ActiveMQ的包导入工程中，以下是pom文件:

<dependencies>
    <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>3.8.1</version>
    <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jms</artifactId>
        <version>4.0.5.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/javax.jms/jms -->
    <dependency>
        <groupId>javax.jms</groupId>
        <artifactId>jms</artifactId>
        <version>1.1</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/log4j/log4j -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.16</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.apache.activemq/activemq-core -->

    <dependency>
        <groupId>org.apache.activemq</groupId>
        <artifactId>activemq-pool</artifactId>
        <version>5.13.0</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.activemq/activemq-all -->
    <dependency>
        <groupId>org.apache.activemq</groupId>
        <artifactId>activemq-all</artifactId>
        <version>5.13.0</version>
    </dependency>
    
  </dependencies>

2、发送接收的前提

为发送和接收方式，把将要发送的信息封装成对象，分别为用户和组织的对象，包括了用户和组织的信息，我们来看看这两个对象

用户对象，BaseModel是一个基类，封装的用ID，创建人，创建时，最后更新人，最后更新时间，这个对象不再单独列出来

package model;

import java.io.Serializable;
import java.util.Date;


/**
 * 用户对象
 * 
 * 
 * @author Administrator
 * @version $Id$
 */
public class JmsFaUser  extends BaseModel implements Serializable {
    private static final long serialVersionUID = 1L;
    private Long id;
    private String userNo;
    private String userName;
    private String userType;
    private String identity;
    private String region;
    private String userStatus;
    private String officeEmail;
    private String employeeWorkNo;
    private Long orgId;
    private String description;
    private String attribute1;
    private String attribute2;
    private String attribute3;
    private Long OId;
    private String userSex;
    private String mobileTel;
    private String officeTel;
    private String selfEmail;
    private  Date  lastUpdatedDate;
    // Constructors

    /** default constructor */
    public JmsFaUser() {
    }

    public String getUserNo() {
        return this.userNo;
    }

    public void setUserNo(String userNo) {
        this.userNo = userNo;
    }

    public String getUserName() {
        return this.userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUserType() {
        return this.userType;
    }

    public void setUserType(String userType) {
        this.userType = userType;
    }

    public String getIdentity() {
        return this.identity;
    }

    public void setIdentity(String identity) {
        this.identity = identity;
    }

    public String getRegion() {
        return this.region;
    }

    public void setRegion(String region) {
        this.region = region;
    }

    public String getUserStatus() {
        return this.userStatus;
    }

    public void setUserStatus(String userStatus) {
        this.userStatus = userStatus;
    }

    public String getOfficeEmail() {
        return this.officeEmail;
    }

    public void setOfficeEmail(String officeEmail) {
        this.officeEmail = officeEmail;
    }

    public String getEmployeeWorkNo() {
        return this.employeeWorkNo;
    }

    public void setEmployeeWorkNo(String employeeWorkNo) {
        this.employeeWorkNo = employeeWorkNo;
    }

    public String getDescription() {
        return this.description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getAttribute1() {
        return this.attribute1;
    }

    public void setAttribute1(String attribute1) {
        this.attribute1 = attribute1;
    }

    public String getAttribute2() {
        return this.attribute2;
    }

    public void setAttribute2(String attribute2) {
        this.attribute2 = attribute2;
    }

    public String getAttribute3() {
        return this.attribute3;
    }

    public void setAttribute3(String attribute3) {
        this.attribute3 = attribute3;
    }

    public String getUserSex() {
        return this.userSex;
    }

    public void setUserSex(String userSex) {
        this.userSex = userSex;
    }

    /**
     * @return the oId
     */
    public Long getOId() {
        return OId;
    }

    /**
     * @param oId
     *            the oId to set
     */
    public void setOId(Long oId) {
        OId = oId;
    }

    public String getSelfEmail() {
        return this.selfEmail;
    }

    public void setSelfEmail(String selfEmail) {
        this.selfEmail = selfEmail;
    }

    /**
     * @param orgId
     *            the orgId to set
     */
    public void setOrgId(Long orgId) {
        this.orgId = orgId;
    }

    /**
     * @return the orgId
     */
    public Long getOrgId() {
        return orgId;
    }

    /**
     * @param officeTel
     *            the officeTel to set
     */
    public void setOfficeTel(String officeTel) {
        this.officeTel = officeTel;
    }

    /**
     * @return the officeTel
     */
    public String getOfficeTel() {
        return officeTel;
    }

    /**
     * @param mobileTel
     *            the mobileTel to set
     */
    public void setMobileTel(String mobileTel) {
        this.mobileTel = mobileTel;
    }

    /**
     * @return the mobileTel
     */
    public String getMobileTel() {
        return mobileTel;
    }

    /**
     * @param id
     *            the id to set
     */
    public void setId(Long id) {
        this.id = id;
    }

    /**
     * @return the id
     */
    public Long getId() {
        return id;
    }

    public Date getLastUpdatedDate() {
        return lastUpdatedDate;
    }

    public void setLastUpdatedDate(Date lastUpdatedDate) {
        this.lastUpdatedDate = lastUpdatedDate;
    }

}

组织对象

package model;

import java.io.Serializable;
import java.util.Date;


/**
 * 组织对象
 * 
 * 
 * @author Administrator
 * @version $Id$
 */
public class JmsOrganize extends  BaseModel  implements Serializable{
    private static final long serialVersionUID = 1L;  
    private Long id;  
    private String orgName; //中文名  
    private String orgFullName;  
    private String orgEngName;//英文名  
    private Long orgTypeNo;  
    private String orgLevel;  
    private Long parentOrgId;  
    private String orgCode;  
    private String orgDesc;  
    private String isbranch;
    private  Date lastUpdatedDate;
      
      
    // Constructors  
  
    /** default constructor */  
    public JmsOrganize() {  
    }  
     
    /** default constructor */  
    public JmsOrganize(Long id, String orgName) {  
        this.setId(id);  
        this.orgName = orgName;  
          
    }  
      
    public JmsOrganize(Long id, Long parendId) {  
        this.setId(id);  
        this.parentOrgId = parendId;  
          
    }  
      
      
    /** minimal constructor */  
    public JmsOrganize(String orgName) {  
        this.orgName = orgName;  
    }  
  
  
    public String getOrgName() {  
        return this.orgName;  
    }  
  
    public void setOrgName(String orgName) {  
        this.orgName = orgName;  
    }  
  
    public String getOrgFullName() {  
        return this.orgFullName;  
    }  
  
    public void setOrgFullName(String orgFullName) {  
        this.orgFullName = orgFullName;  
    }  
  
    public Long getOrgTypeNo() {  
        return this.orgTypeNo;  
    }  
  
    public void setOrgTypeNo(Long orgTypeNo) {  
        this.orgTypeNo = orgTypeNo;  
    }  
  
    public String getOrgLevel() {  
        return this.orgLevel;  
    }  
  
    public void setOrgLevel(String orgLevel) {  
        this.orgLevel = orgLevel;  
    }  
  
    public String getOrgDesc() {  
        return this.orgDesc;  
    }  
  
    public void setOrgDesc(String orgDesc) {  
        this.orgDesc = orgDesc;  
    }  
  
  
    public String getIsbranch() {  
        return this.isbranch;  
    }  
  
    public void setIsbranch(String isbranch) {  
        this.isbranch = isbranch;  
    }  
  
    /** 
     * @param parentOrgId the parentOrgId to set 
     */  
    public void setParentOrgId(Long parentOrgId) {  
        this.parentOrgId = parentOrgId;  
    }  
  
    /** 
     * @return the parentOrgId 
     */  
    public Long getParentOrgId() {  
        return parentOrgId;  
    }  
  
    /** 
     * @param orgCode the orgCode to set 
     */  
    public void setOrgCode(String orgCode) {  
        this.orgCode = orgCode;  
    }  
  
    /** 
     * @return the orgCode 
     */  
    public String getOrgCode() {  
        return orgCode;  
    }  
  
    /** 
     * @param orgEngName the orgEngName to set 
     */  
    public void setOrgEngName(String orgEngName) {  
        this.orgEngName = orgEngName;  
    }  
  
    /** 
     * @return the orgEngName 
     */  
    public String getOrgEngName() {  
        return orgEngName;  
    }  
  
    /** 
     * @param id the id to set 
     */  
    public void setId(Long id) {  
        this.id = id;  
    }  
  
    /** 
     * @return the id 
     */  
    public Long getId() {  
        return id;  
    }

    public Date getLastUpdatedDate() {
        return lastUpdatedDate;
    }

    public void setLastUpdatedDate(Date lastUpdatedDate) {
        this.lastUpdatedDate = lastUpdatedDate;
    } 
}

由于发送的是对象，所以提供一个转换器，Convertor，该类要继承Spring的MessageConvertor

package com.wc82.util;


import java.text.DateFormat;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.ObjectMessage;
import javax.jms.Session;

import model.JmsFaUser;
import model.JmsOrganize;

import org.apache.log4j.Logger;
import org.springframework.jms.support.converter.MessageConversionException;
import org.springframework.jms.support.converter.MessageConverter;


public class FaJmsConverter    implements  MessageConverter {
    
    
    private static final Logger logger =Logger.getLogger(FaJmsConverter.class);
    
    public Message toMessage(Object obj, Session session)
            throws JMSException, MessageConversionException {
         ObjectMessage objMsg=session.createObjectMessage();      
            if(obj instanceof JmsFaUser){  
                JmsFaUser user = (JmsFaUser)obj;
                logger.info("The user message's userId is " + user.getId());  
                objMsg.setStringProperty("dataFlag", "FaUser");  
                objMsg.setStringProperty("userName", user.getUserName());  
                objMsg.setLongProperty("userId", user.getId());  
                objMsg.setStringProperty("officeEmail", user.getOfficeEmail());  
                objMsg.setStringProperty("selfEmail", user.getSelfEmail());  
                if(user.getOfficeTel() != null){  
                    objMsg.setStringProperty("officeTel", user.getOfficeTel());  
                }else{  
                    objMsg.setLongProperty("officeTel", new Long(0));  
                }  
                if(user.getMobileTel() != null){  
                    objMsg.setStringProperty("mobileTel", user.getMobileTel());  
                }else{  
                    objMsg.setLongProperty("mobileTel", new Long(0));  
                }  
                if(user.getLastUpdatedDate() != null){  
                    objMsg.setStringProperty("lastUpdatedDate", DateFormat.getDateTimeInstance().format(user.getLastUpdatedDate()));  
                }  
                  
            }else if(obj instanceof JmsOrganize){  
                JmsOrganize org = (JmsOrganize)obj;  
                logger.info("The org message's userId is " + org.getId());  
                objMsg.setStringProperty("dataFlag", "Organize");  
                objMsg.setLongProperty("orgId", org.getId());  
                objMsg.setStringProperty("orgName", org.getOrgName());  
                if(org.getLastUpdatedDate() != null){  
                    objMsg.setStringProperty("lastUpdatedDate", DateFormat.getDateTimeInstance().format(org.getLastUpdatedDate()));  
                }  
            }  
            return objMsg;  
    }

    public Object fromMessage(Message message) throws JMSException,
            MessageConversionException {
        logger.info("from message");
        ObjectMessage objMessage = (ObjectMessage)message;  
        String dataFlag = objMessage.getStringProperty("dataFlag");  
        if("FaUser".equals(dataFlag)){  
            JmsFaUser user = new JmsFaUser();  
            user.setId(objMessage.getLongProperty("userId"));  
            user.setUserName(objMessage.getStringProperty("userName"));  
            user.setOfficeEmail(objMessage.getStringProperty("officeEmail"));  
            user.setSelfEmail(objMessage.getStringProperty("selfEmail"));  
            user.setOfficeTel(objMessage.getStringProperty("officeTel"));  
            user.setMobileTel(objMessage.getStringProperty("mobileTel"));  
            String lastDate = objMessage.getStringProperty("lastUpdatedDate");  
            try {  
                if(lastDate != null){  
                    user.setLastUpdatedDate(DateFormat.getDateTimeInstance().parse(lastDate));  
                }  
            } catch (Exception e) {  
                e.printStackTrace();  
            }  
            return user;  
        }else if("Organize".equals(dataFlag)){  
            Long orgId = objMessage.getLongProperty("orgId");  
            String orgName = objMessage.getStringProperty("orgName");  
            JmsOrganize organize = new JmsOrganize(orgId, orgName);  
            String lastDate = objMessage.getStringProperty("lastUpdatedDate");  
            try {  
                organize.setLastUpdatedDate(DateFormat.getDateTimeInstance().parse(lastDate));  
            } catch (Exception e) {  
                e.printStackTrace();  
            }  
            return organize;  
        }  
        return null;
    }


}

3、发送

Sprng为我们提供了JMSTemplate，基于这个发送消息，我们先来看看Spring配置文件

<?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/jms http://www.springframework.org/schema/jms/spring-jms-4.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
    <!-- 外部属性文件的定义  -->  
    <bean id="propertyConfigurer"  
            class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="locations">   
            <list>   
                <value>classpath:sender.properties</value>   
            </list>  
        </property>  
    </bean>  
  
    <!-- 配置connectionFactory -->  
    <bean id="jmsSenderFactory" class="org.apache.activemq.pool.PooledConnectionFactory"  
        destroy-method="stop">  
        <property name="connectionFactory">  
            <bean class="org.apache.activemq.ActiveMQConnectionFactory">  
                <property name="brokerURL" value="${jms.sendBrokerURL}">  
                </property>  
                <property name="useAsyncSend" value="true"></property>  
                <property name="userName" value="admin"></property>  
                <property name="password" value="admin"></property> 
            </bean>  
        </property>  
        <property name="maxConnections" value="100"></property>  
    </bean>  
  
    <bean id="jmsConverter" class="com.wc82.util.FaJmsConverter" />  
  
    <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">  
        <property name="connectionFactory" ref="jmsSenderFactory"></property>  
        <property name="defaultDestination" ref="destination" />  
        <!-- 区别它采用的模式为false是p2p为true是订阅 -->  
        <property name="pubSubDomain" value="true" />  
        <property name="messageConverter" ref="jmsConverter"></property>  
    </bean>  
  
    <!-- 发送消息的目的地（一个队列） -->  
    <bean id="destination" class="org.apache.activemq.command.ActiveMQTopic">  
        <!-- 设置消息队列的名字 -->  
        <constructor-arg index="0" value="${jms.sendDestinationName}" />  
    </bean>  
  
    <bean id="messageProducer" class="message.MessageProducer">  
        <property name="jmsTemplate" ref="jmsTemplate"></property>  
    </bean>  
    
</beans>

根据上面的配置，只需要获得messageProducer这个Bean，便可以发送，下面我来看看MessageProducer这个类及其接口

package message.face;

public interface IJMSMessageProducer {
     public abstract void converAndSendObjectMessage(Object obj);
}

实现类

package message;

import message.face.IJMSMessageProducer;

import org.apache.log4j.Logger;
import org.springframework.jms.core.JmsTemplate;

public class MessageProducer implements IJMSMessageProducer {
    
    private static final Logger logger =Logger.getLogger(MessageProducer.class);
    
    private JmsTemplate jmsTemplate;

    /**
     * @param jmsTemplate
     *            the jmsTemplate to set
     */
    public void setJmsTemplate(JmsTemplate jmsTemplate) {
        this.jmsTemplate = jmsTemplate;
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * com.vispractice.faf.jms.IJMSMessageProducer#converAndSendObjectMessage
     * (java.lang.Object)
     * 
     * @date 2012-10-25
     * 
     * @user
     */
    public void converAndSendObjectMessage(Object obj) {
        jmsTemplate.convertAndSend(obj);
        logger.info("The message pub success, the Object is " + obj);
    }

}

发送测试类

package com.wc82.ActivemqTransData;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import message.face.IJMSMessageProducer;
import model.JmsFaUser;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class SendTest {
        public static void main(String[] args) {
            
            
            Properties pro=new Properties();
            try {
                InputStream input=SendTest.class.getResourceAsStream("/sender.properties");
                pro.load(input);
            } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                pro.setProperty("count", new Integer(0).toString());
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            Object obj=pro.get("jms.jmsSendConverterClass");
            ApplicationContext ac = new ClassPathXmlApplicationContext(  
                    "jms-sender.xml");  
            IJMSMessageProducer messageProducer = (IJMSMessageProducer) ac.getBean("messageProducer");  
            JmsFaUser user = new JmsFaUser();  
            user.setUserName("ssss");  
            user.setId(new Long(111));  
            messageProducer.converAndSendObjectMessage(user);
        }
}

那发送到神马位置呢？在发送消息的Spring配置文件里面，有一个jms.sendBrokerURL，这个值是在sender.properties文件中配置的，方便修改，我们来看一下关于发送消息时所以配置的参数信息

jms.sendBrokerURL=tcp\://localhost\:61616
jms.sendDestinationName=faJMS

第一个指地址，因为ActiveMQ部署的是我本机，所以使用localhost，端口号在部署的时候，就是默认的

第二个JMS的名称，这个可以自取

如果发送，可以通过localhost:8161的控制台，看到你所发送的消息，这个地址是ActiveMQ的Web控制台，接下为我们看看接收

4、接收

MQ给我提供一种方式，当接收到消息的时候，自动去执行我们业务代码，

<?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/jms http://www.springframework.org/schema/jms/spring-jms-4.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
    <description>jms receiver configuration</description>  
      
      <!-- 外部属性文件的定义  -->  
    <bean id="propertyConfigurer"  
            class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="locations">   
            <list>   
                <value>classpath:receiver.properties</value>   
            </list>  
        </property>  
    </bean> 
    
    <!-- 配置connectionFactory -->  
    <bean id="jmsReceiverFactory" class="org.apache.activemq.pool.PooledConnectionFactory"  
        destroy-method="stop">  
        <property name="connectionFactory">  
            <bean class="org.apache.activemq.ActiveMQConnectionFactory">  
                <property name="brokerURL" value="${jms.receiveBrokerURL}" />  
<!--                 <property name="userName" value="reader"></property> -->  
<!--                 <property name="password" value="readeryxtech"></property> -->  
            </bean>  
        </property>  
        <property name="maxConnections" value="100"></property>  
    </bean>  
  
    <bean id="destination" class="org.apache.activemq.command.ActiveMQTopic">  
        <!-- 设置消息队列的名字 -->  
        <constructor-arg index="0" value="${jms.receiveDestinationName}" />  
    </bean>  
  
    <bean id="jmsConverter" class="com.wc82.util.FaJmsConverter" />  
      
      
    <!--异步调用消息 -->  
    <bean id="receive"  
        class="org.springframework.jms.listener.DefaultMessageListenerContainer">  
        <property name="connectionFactory" ref="jmsReceiverFactory"></property>  
        <property name="destination" ref="destination"></property>  
        <property name="messageListener" ref="messageListener"></property>
    </bean>  
      
      <bean id="delegate" class="message.MessageConsumer"></bean>
      
    <bean id="messageListener"  
        class="org.springframework.jms.listener.adapter.MessageListenerAdapter">  
        <property name="delegate" ref="delegate"></property>  
        <property name="defaultListenerMethod" value="onMessage"></property>  
        <property name="messageConverter" ref="jmsConverter" />  
    </bean>
    
</beans>

先看一下messageListener，这个监听，是自己写的，其中delegate是当你接收消息之后所执行的业务代码的bean，我这里将这个bean做成配置，方便修改，而defaultListenerMethod是指定执行的方法，这里设置定了，执行omMessage方法，也就是说类你可以指定，但是onMessage方法必须要有，而convertor也是可配的，与发送的convertor是一样的，这个转换器发送与接收都必须要使用

注意：这里为神马要将执行的类的bean做成可配呢？因为我在做这一块的工作时，我不知道是由那个bean，但是类中的方法我可设置，这样做的目地就是在消息的消费者不在去关心这个消息，而只需要写一个类，里面有onMessage方法，在这个方法里做自己的业务逻辑即可，将其关注点放到业务处理上，那肿么样来设计这个方法的名字呢，我们可以设计了一个接口，如果消费者想消费这个消息，就必须实现这上接口，下面我们来看看这个接口

package message.face;

public interface FaJmsReceiveListener {
    public void onMessage(Object baseModel);
}

这个接口中只有一个方法就是onMessage，而实现类则交由具体的消费者，因为消费可能在实现的时候可能引用别的bean，进而处理别的业务，例如入库，所以我们在做接收消息的配置上，只设计处理消息的bean的名字，不设置具体的class，只要消费者配置了这个bean的名字即可，当然这个名字也是可配的，配置在了init.propertis中，我们来看看这个接口的实现类

package message;

import org.apache.log4j.Logger;

import message.face.FaJmsReceiveListener;
import model.JmsFaUser;
import model.JmsOrganize;

public class MessageConsumer   implements  FaJmsReceiveListener{
    
    private  static  final  Logger logger=Logger.getLogger(MessageConsumer.class);
    
    public void onMessage(Object baseModel) {
        if(baseModel instanceof JmsFaUser){  
            JmsFaUser user = (JmsFaUser)baseModel;  
            logger.info(user.getId());
        }else if (baseModel instanceof JmsOrganize){  
            JmsOrganize org = (JmsOrganize)baseModel;  
            logger.info(org.getId());
        }  
    }

}

上述的代码可以共用，当发送的类变更时，只需要编写Convertor，并在init.properties中配置上即可，而消息的消费者只需要实现该接口即可

测试类

package com.wc82.ActivemqTransData;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class ReceiveTest {
    public static void main(String[] args) {  
        ApplicationContext a2c = new ClassPathXmlApplicationContext("jms-receiver.xml");  
        System.out.println("receiver");  
    }  
}

接下来，看看接收的receiver.properties

jms.receiveBrokerURL=tcp\://localhost\:61616
jms.receiveDestinationName=faJMS

第一个、第二个、第三个参数不再详细述说，第四就是执行业务逻辑的bean的名字，这个参数可以设定死也可以设定灵活

上述只是初步的能发送和接收消息，后续是考虑安全、性能的问题。

注意测试时:要先打开消息接收程序，然后再打开消息发送程序。activemq是实时性的，不会将消息保存下来，发送消息的程序在发送消息时，如果接收程序没有启动，那么这个接收程序就接收不到这个消息。下一节，就是用来解决这个持久订阅的问题。

posted on 2017-02-21 09:50 nickTimer 阅读(3676) 评论(0) 编辑收藏举报

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