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ActiveMQ_点对点队列(二)

2024-08-16 22:47:47   221人阅读


一、本文章包含的内容
1、列举了ActiveMQ中通过Queue方式发送、消费队列的代码（普通文本、json/xml字符串、对象数据）
2、spring+activemq方式

二、配置信息
1、activemq的pom.xml信息
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<!--activemq  Begin-->
       <dependency>
           <groupId>org.springframework</groupId>
           <artifactId>spring-jms</artifactId>
           <version>${spring.version}</version>
       </dependency>
       <!-- <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-messaging</artifactId>
            <version>${spring.version}</version>
        </dependency>-->
       <dependency>
           <groupId>org.apache.activemq</groupId>
           <artifactId>activemq-all</artifactId>
           <version>5.14.0</version>
       </dependency>
       <!--activemq  End-->

2、activemq的配置文件：spring-jms.xml

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<!-- 启用spring mvc 注解 -->
   <context:component-scan base-package="org.soa.test.activemq"/>
 
   <!-- 配置JMS连接工厂 -->
   <bean id="connectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
       <property name="brokerURL" value="failover:(tcp://192.168.146.129:61616)" />
       <!--解决接收消息抛出异常：javax.jms.JMSException: Failed to build body from content. Serializable class not available to broke-->
       <property name="trustAllPackages" value="true"/>
       <!-- 是否异步发送 -->
       <property name="useAsyncSend" value="true" />
   </bean>
 
   <!--   Queue模式 Begin -->
 
   <!-- 定义消息队列（Queue） -->
   <bean id="queueDestination" class="org.apache.activemq.command.ActiveMQQueue">
       <!-- 设置消息队列的名字 -->
       <constructor-arg>
           <value>defaultQueueName</value>
       </constructor-arg>
   </bean>
 
   <!-- 配置JMS模板，Spring提供的JMS工具类，它发送、接收消息。（Queue） -->
   <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
       <property name="connectionFactory" ref="connectionFactory" />
       <property name="defaultDestination" ref="queueDestination" />
       <property name="pubSubDomain" value="false"/>
       <!--接收超时时间-->
       <!--<property name="receiveTimeout" value="http://www.mamicode.com/10000" />-->
   </bean>
   <!--   Queue模式 End -->


三、队列发送端及测试程序

1、发送代码

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package org.soa.test.activemq.queues;
 
import org.soa.test.activemq.StudentInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.jms.core.MessageCreator;
import org.springframework.stereotype.Component;
 
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;
import java.util.List;
 
/**
 * Created by JamesC on 16-9-22.
 */
@Component
public class ProduceMsg {
 
    @Autowired
    private JmsTemplate jmsTemplate;
 
    /**
     * 向指定队列发送消息
     */
    public void sendMessage(Destination destination, final String msg) {
        System.out.println("向队列" + destination.toString() + "发送了消息------------" + msg);
        jmsTemplate.send(destination, new MessageCreator() {
            public Message createMessage(Session session) throws JMSException {
                return session.createTextMessage(msg);
            }
        });
    }
 
    /**
     * 向默认队列发送消息(默认队列名称在bean：queueDestination配置）
     */
    public void sendMessage(final String msg) {
        //queue://queue1
        String destination = jmsTemplate.getDefaultDestination().toString();
        System.out.println("向队列" + destination + "发送了消息------------" + msg);
        jmsTemplate.send(new MessageCreator() {
            public Message createMessage(Session session) throws JMSException {
                return session.createTextMessage(msg);
            }
        });
    }
 
    /**
     * 向默认队列发送消息
     */
    public void sendMessageConvertAndSend(final Object msg) {
 
        String destination = jmsTemplate.getDefaultDestination().toString();
        System.out.println("向队列" + destination + "发送了消息------------" + msg);
        //使用内嵌的MessageConverter进行数据类型转换，包括xml(JAXB)、json(Jackson)、普通文本、字节数组
        jmsTemplate.convertAndSend(destination, msg);
    }
 
    /**
     * 向指定队列发送消息
     */
    public void sendStudentInfo(Destination destination, final StudentInfo msg) {
        System.out.println("向队列" + destination.toString() + "发送了消息------------" + msg);
        jmsTemplate.send(destination, new MessageCreator() {
            public Message createMessage(Session session) throws JMSException {
                return session.createObjectMessage(msg);
            }
        });
    }
}


2、测试程序

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package org.soa.test.activemq.queues;
 
import com.alibaba.fastjson.JSON;
import org.apache.activemq.command.ActiveMQQueue;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.soa.test.activemq.StudentInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 
import javax.jms.Destination;
import java.util.Date;
 
//http://www.coderli.com/junit-spring-test-applicationcontext/
 
/**
 * Created by JamesC on 16-9-22.
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/spring-jms.xml")
public class ProduceMsgTest extends AbstractJUnit4SpringContextTests {
 
    @Autowired
    protected ApplicationContext ctx;
 
    /**
     * 队列名queue1  这里使用jms配置文件中的数据
     */
    @Autowired
    private Destination queueDestination;
 
    /**
     * 队列消息生产者
     */
    @Autowired
    private ProduceMsg produceMessage;
 
 
    //向默认队列发消息（文本）
    @Test
    public void produceMsg_DefaultQueue() {
        String msg = "这里是向默认队列发送的消息" + new Date().toString();
        produceMessage.sendMessage(msg);
    }
 
    //向默认队列发消息(Json字符串)
    @Test
    public void produceMsg_Json() {
        StudentInfo info = new StudentInfo();
        info.setId(1);
        info.setStdName("李磊");
        info.setStdNo("001");
        info.setEnterDate(new Date());  //队列存放的是时间戳
 
        String alibabaJson = JSON.toJSONString(info);
        produceMessage.sendMessage(alibabaJson);
    }
 
    //向默认队列发消息(使用convertAndSend发送对象）
    @Test
    public void produceMsg_ConvertAndSend() {
        StudentInfo info = new StudentInfo();
        info.setId(1);
        info.setStdName("李磊");
        info.setStdNo("001");
        info.setEnterDate(new Date());
 
        produceMessage.sendMessageConvertAndSend(info);
    }
 
    //向指定队列发消息(文本)
    @Test
    public void produceMsg_CustomQueue() {
        for (int i = 0; i < 20; i++) {
            ActiveMQQueue myDestination = new ActiveMQQueue("queueCustom");
            produceMessage.sendMessage(myDestination, "----发送消息给queueCustom");
        }
    }
 
    //向指定队列发消息(队列名称从XML读取)
    @Test
    public void produceMsg_XmlQueue() {
        for (int i = 0; i < 20; i++) {
            ActiveMQQueue destinationQueue = (ActiveMQQueue) applicationContext.getBean("queueDestination");
            produceMessage.sendMessage(destinationQueue, "----send my msg to queueXml");
        }
    }
 
    //向指定队列发消息(发送对象)
    @Test
    public void produceMsg_StudentInfo() {
 
        StudentInfo info = new StudentInfo();
        info.setId(1);
        info.setStdName("李磊");
        info.setStdNo("001");
        info.setEnterDate(new Date());
 
        ActiveMQQueue destination = new ActiveMQQueue("StudentInfo");
        produceMessage.sendStudentInfo(destination, info);
    }
}


四、队列消费端及测试程序

1、消费代码

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package org.soa.test.activemq.queues;
 
import org.soa.test.activemq.StudentInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.jms.support.JmsUtils;
import org.springframework.stereotype.Component;
 
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.ObjectMessage;
import javax.jms.TextMessage;
 
/**
 * Created by JamesC on 16-9-22.
 */
@Component
public class ConsumeMsg {
    @Autowired
    private JmsTemplate jmsTemplate;
 
    /**
     * 接受消息
     */
    public String receive(Destination destination) {
        TextMessage tm = (TextMessage) jmsTemplate.receive(destination);
        String msg = "";
        try {
            msg = tm.getText();
            System.out.println("从队列" + destination.toString() + "收到了消息：\t" + msg);
 
        } catch (JMSException e) {
            e.printStackTrace();
            return "";
        }
        return msg;
    }
 
    /**
     * 接受消息
     */
    public StudentInfo receiveStudentInfo() {
        try {
            String destination = jmsTemplate.getDefaultDestination().toString();
            ObjectMessage msg=(ObjectMessage)jmsTemplate.receive(destination);
            return (StudentInfo)msg.getObject();
 
        } catch (JMSException e) {
            //检查性异常转换为非检查性异常
            throw JmsUtils.convertJmsAccessException(e);
        }
    }
 
    /**
     * 接受消息
     */
    public Object receiveConvertAndReceive() {
        String destination = jmsTemplate.getDefaultDestination().toString();
        Object msg = jmsTemplate.receiveAndConvert(destination);
        return msg;
    }
}


2、测试程序

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package org.soa.test.activemq.queues;
 
import org.apache.activemq.command.ActiveMQQueue;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.soa.test.activemq.StudentInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 
/**
 * Created by JamesC on 16-9-22.
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/spring-jms.xml")
public class ConsumeMsgTest {
 
    @Autowired
    private ConsumeMsg consumeMsg;
 
    //从指定队列接收消息（文本)
    @Test
    public void receiveMsg() {
        //没有消息阻塞一段时间后会抛异常
        //java.lang.NullPointerException
        ActiveMQQueue destination = new ActiveMQQueue("defaultQueueName");
        consumeMsg.receive(destination);
    }
 
    //从指定队列接收消息（StudentInfo对象消息)
    @Test
    public void receiveStudentInfo() {
        StudentInfo msg = consumeMsg.receiveStudentInfo();
        System.out.println(msg.getStdName());
    }
 
    //从指定队列接收消息（Json对象)
    @Test
    public void receiveConvertAndReceive() {
 
        StudentInfo msg =(StudentInfo) consumeMsg.receiveConvertAndReceive();
        System.out.println(msg.getStdName());
    }
}









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ActiveMQ_点对点队列(二)


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