RabbitMQ 学习总结

环境：centos7

开工：

     1、 初始化环境：yum install gcc glibc-devel make ncurses-devel openssl-devel xmlto

      2、创建文件夹：cd usr/local/src/

3、wget http://www.rabbitmq.com/releases/erlang/erlang-19.0.4-1.el7.centos.x86_64.rpm

4、wget https://dl.bintray.com/rabbitmq/all/rabbitmq-server/3.6.9/:rabbitmq-server-3.6.9-1.el7.noarch.rpm

5、rpm -ivh --nodeps erlang-19.0.4-1.el7.centos.x86_64.rpm

6、rpm -ivh --nodeps rabbitmq-server-3.6.9-1.el7.noarch.rpm

7、firewall-cmd --zone=public --add-port=15672/tcp --permanent

8、 firewall-cmd --zone=public --add-port=5672/tcp --permanent

9、firewall-cmd --reload

10、rabbitmq-plugins enable rabbitmq_management

11、rabbitmq-server -detached

安装已完成

12、rabbitmqctl add_user root root // 新增用户root/root.

13、rabbitmqctl set_user_tags root administrator // 付管理角色

14、rabbitmqctl set_permissions -p / root '.*' '.*' '.*' // 付权限.

使用：http://192.168.1.102:15672/进行访问(采用root/root登录)

单消息应用：

1、添加maven 依赖在项目中：

<dependency>
        <groupId>com.rabbitmq</groupId>
    <artifactId>amqp-client</artifactId>
    <version>5.1.1</version>

</dependency>

2、由于本人环境原因没有多机器模拟，只在一个项目中集成了消息生产和消费者

package com.example.demo;

import java.io.IOException;
import java.util.concurrent.TimeoutException;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import com.rabbitmq.client.AMQP;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.Consumer;
import com.rabbitmq.client.DefaultConsumer;
import com.rabbitmq.client.Envelope;

@SpringBootApplication
public class Demo11Application {
public final static String QUEUE_NAME = "Hello.rabbitMQ";
public static void main(String[] args) {
//SpringApplication.run(Demo11Application.class, args);
testSendMq();
testRMq();
}
/**
* 消息生产者
*/
public static void testSendMq() {

// 鏈接工程
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("192.168.1.102"); // 虚拟机地址
factory.setPort(5672);
factory.setUsername("root");
factory.setPassword("root");
try {
// 得到连接，创建通道
String message = "Hello RabbitMQ";
for(int i=1;i<101;i++) {
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();
//獲得一個消息隊列
channel.queueDeclare(QUEUE_NAME+i, false, false, false, null);
message +=i;
channel.basicPublish("", QUEUE_NAME+i, null, message.getBytes("UTF-8"));
channel.close();
connection.close();
}

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TimeoutException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* 消息消费者
*/
public static void testRMq() {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("192.168.1.102"); // 虚拟机地址
factory.setPort(5672);
factory.setUsername("root");
factory.setPassword("root");
try {
for(int i=1;i<1000001;i++) {
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();
channel.queueDeclare(QUEUE_NAME+i, false, false, false, null);
Consumer consumer = new DefaultConsumer(channel) {
            public void handleDelivery(String consumerTag, Envelope envelope,
                                       AMQP.BasicProperties properties, byte[] body)
                    throws IOException {
                String message = new String(body, "UTF-8");
                System.out.println("Customer Received '" + message + "'");
            }
        };
        channel.basicConsume(QUEUE_NAME+i, true, consumer);
        channel.close();
connection.close();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TimeoutException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

}

消息中心（注释掉消息接收者）：

开启消息接受者：

IDE 控制台:

样例演示过程中的问题：

1、

   可能是环境原因总是不能执行成功这个命令

 解决方案：找rpm 版本的安装即可。

2、注意版本匹配问题 erling 和rabbitMQ的版本匹配，以官方文档为准