• ActiveMQ实例1--简单的发送和接收消息


    一、环境准备

    1,官网http://activemq.apache.org/下载最新版本的ActiveMQ,并解压

    2,打开对应的目录,在Mac环境下,一般可以运行命令:

      cd /Users/***/Downloads/apache-activemq-***/bin/macosx  

      ./activemq start

    3,启动成功后,登录http://localhose:8161/admin/,登陆账号和密码都为admin,创建一个queue名为jyQueue。

    二、创建Eclipse项目

    1,新建项目,并导入对应的jar文件如下图所示

     

    2,Sender.java和Receiver.java

     1 package com.simple.activemq;
     2 
     3 import javax.jms.Connection;
     4 import javax.jms.ConnectionFactory;
     5 import javax.jms.DeliveryMode;
     6 import javax.jms.Destination;
     7 import javax.jms.MessageProducer;
     8 import javax.jms.Session;
     9 import javax.jms.TextMessage;
    10 import org.apache.activemq.ActiveMQConnection;
    11 import org.apache.activemq.ActiveMQConnectionFactory;
    12 
    13 public class Sender {
    14     private static final int SEND_NUMBER = 5;
    15 
    16     public static void main(String[] args) {
    17         // ConnectionFactory :连接工厂,JMS 用它创建连接
    18         ConnectionFactory connectionFactory;
    19         // Connection :JMS 客户端到JMS Provider 的连接
    20         Connection connection = null;
    21         // Session: 一个发送或接收消息的线程
    22         Session session;
    23         // Destination :消息的目的地;消息发送给谁.
    24         Destination destination;
    25         // MessageProducer:消息发送者
    26         MessageProducer producer;
    27         // TextMessage message;
    28         // 构造ConnectionFactory实例对象,此处采用ActiveMq的实现jar
    29         connectionFactory = new ActiveMQConnectionFactory(
    30                 ActiveMQConnection.DEFAULT_USER,
    31                 ActiveMQConnection.DEFAULT_PASSWORD,
    32                 "tcp://localhost:61616");
    33         try {
    34             // 构造从工厂得到连接对象
    35             connection = connectionFactory.createConnection();
    36             // 启动
    37             connection.start();
    38             // 获取操作连接
    39             session = connection.createSession(Boolean.TRUE,
    40                     Session.AUTO_ACKNOWLEDGE);
    41             // 获取session注意参数值xingbo.xu-queue是一个服务器的queue,须在在ActiveMq的console配置
    42             destination = session.createQueue("jyQueue");
    43             // 得到消息生成者【发送者】
    44             producer = session.createProducer(destination);
    45             // 设置不持久化,此处学习,实际根据项目决定
    46             producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
    47             // 构造消息,此处写死,项目就是参数,或者方法获取
    48             sendMessage(session, producer);
    49             session.commit();
    50         } catch (Exception e) {
    51             e.printStackTrace();
    52         } finally {
    53             try {
    54                 if (null != connection)
    55                     connection.close();
    56             } catch (Throwable ignore) {
    57             }
    58         }
    59     }
    60 
    61     public static void sendMessage(Session session, MessageProducer producer)
    62             throws Exception {
    63         for (int i = 1; i <= SEND_NUMBER; i++) {
    64             TextMessage message = session
    65                     .createTextMessage("ActiveMq 发送的消息" + i);
    66             // 发送消息到目的地方
    67             System.out.println("发送消息:" + "ActiveMq 发送的消息" + i);
    68             producer.send(message);
    69         }
    70     }
    71 }
    View Code
     1 package com.simple.activemq;
     2 
     3 import javax.jms.Connection;
     4 import javax.jms.ConnectionFactory;
     5 import javax.jms.Destination;
     6 import javax.jms.MessageConsumer;
     7 import javax.jms.Session;
     8 import javax.jms.TextMessage;
     9 import org.apache.activemq.ActiveMQConnection;
    10 import org.apache.activemq.ActiveMQConnectionFactory;
    11 
    12 public class Receiver {
    13     public static void main(String[] args) {
    14         // ConnectionFactory :连接工厂,JMS 用它创建连接
    15         ConnectionFactory connectionFactory;
    16         // Connection :JMS 客户端到JMS Provider 的连接
    17         Connection connection = null;
    18         // Session: 一个发送或接收消息的线程
    19         Session session;
    20         // Destination :消息的目的地;消息发送给谁.
    21         Destination destination;
    22         // 消费者,消息接收者
    23         MessageConsumer consumer;
    24         connectionFactory = new ActiveMQConnectionFactory(
    25                 ActiveMQConnection.DEFAULT_USER,
    26                 ActiveMQConnection.DEFAULT_PASSWORD,
    27                 "tcp://localhost:61616");
    28         try {
    29             // 构造从工厂得到连接对象
    30             connection = connectionFactory.createConnection();
    31             // 启动
    32             connection.start();
    33             // 获取操作连接
    34             session = connection.createSession(Boolean.FALSE,
    35                     Session.AUTO_ACKNOWLEDGE);
    36             // 获取session注意参数值xingbo.xu-queue是一个服务器的queue,须在在ActiveMq的console配置
    37             destination = session.createQueue("jyQueue");
    38             consumer = session.createConsumer(destination);
    39             while (true) {
    40                 //设置接收者接收消息的时间,为了便于测试,这里谁定为100s
    41                 TextMessage message = (TextMessage) consumer.receive(100000);
    42                 if (null != message) {
    43                     System.out.println("收到消息" + message.getText());
    44                 } else {
    45                     break;
    46                 }
    47             }
    48         } catch (Exception e) {
    49             e.printStackTrace();
    50         } finally {
    51             try {
    52                 if (null != connection)
    53                     connection.close();
    54             } catch (Throwable ignore) {
    55             }
    56         }
    57     }
    58 }
    View Code

    3,先后运行Sender.java和Receiver.java

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  • 原文地址:https://www.cnblogs.com/jiangxiaoyaoblog/p/5568235.html
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