RabbitMQ学习一-安装及Web管理端账户配置

环境准备

Centos7.5
Erlang（5.10.4）
RabbitMQ（3.6.8）
注意Erlang与RabbitMQ版本需要匹配

安装Erlang及RabbitMQ

安装Erlang

#安装Erlang
yum install erlang

如果报以下错误，则是yum源没有配置，配置即可

Loaded plugins: fastestmirror
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
base                                                                                            | 3.6 kB  00:00:00
extras                                                                                          | 3.4 kB  00:00:00
updates                                                                                         | 3.4 kB  00:00:00
(1/2): extras/7/x86_64/primary_db                                                               | 187 kB  00:00:00
(2/2): updates/7/x86_64/primary_db                                                              | 5.2 MB  00:00:05
Loading mirror speeds from cached hostfile
● base: 
● extras: 
● updates: 
No package erlang available.
Error: Nothing to do

配置yum源
在/etc/yum.repos.d/下创建文件epel.repo
并添加内容

[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
#baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch

failovermethod=priority
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7

检查是否安装成功，成功显示版本，然后Ctrl+z退出

[root@VM_0_17_centos etc]# erl
Erlang R16B03-1 (erts-5.10.4) [source] [64-bit] [async-threads:10] [hipe] [kernel-poll:false]

Eshell V5.10.4  (abort with ^G)
1>

安装RabbitMQ

在https://github.com/rabbitmq/rabbitmq-server/releases/tag/rabbitmq_v3_6_8下载rabbitmq-server-3.6.8-1.el7.noarch.rpm文件。（官网https://www.rabbitmq.com/news.html）
并上传到linux上

# 以rpm方式安装
rpm -ivh rabbitmq-server-3.6.8-1.el7.noarch.rpm

如果出现以下错误

如果出现以下错误，是因为找不到socat包。
warning: rabbitmq-server-3.6.8-1.el7.noarch.rpm: Header V4 RSA/SHA512 Signature, key ID 6026dfca: NOKEY
error: Failed dependencies:
        socat is needed by rabbitmq-server-3.6.8-1.el7.noarch

是因为没有安装socat导致，安装socat之后重新安装RabbitMQ即可

yum -y install socat

RabbitMQ运行

#启动
 service rabbitmq-server start
#停止
service rabbitmq-server stop
#查看状态
service rabbitmq-server status
rabbitmqctl status

RabbitMQ用户管理

# 添加用户
[root@VM_0_17_centos etc]# rabbitmqctl add_user test 123456
Creating user "test" ...
# 给用户设置标签
rabbitmqctl set_user_tags test administrator
# 查看用户列表
rabbitmqctl list_users
# 用户授权
rabbitmqctl set_permissions -p "/" test".*" ".*" ".*"

RabbitMQ页面化管理

#开启web管理端
 rabbitmq-plugins enable rabbitmq_management
 #l浏览器访问,ip:prot(端口号是15672)
 192.234.99.xxx:15672
 #创建访问用户
 [root@VM_0_17_centos etc]# rabbitmqctl add_user test 123456
Creating user "test" ...
#给绑定用户绑定标签，不绑定没权限登录
[root@VM_0_17_centos etc]# rabbitmqctl set_user_tags test administrator
Setting tags for user "test" to [administrator] ...

生产者消费者模型

创建maven项目，添加依赖

        <dependency>
           <groupId>com.rabbitmqgroupId>
           <artifactId>amqp-clientartifactId>
           <version>4.8.0version>
       dependency>

生产者

package ai.zixing;

import com.rabbitmq.client.*;

public class RabbitmqProducter {
   public static void main(String[] args) throws Exception {
       // 连接工厂
       ConnectionFactory factory = new ConnectionFactory();
       factory.setHost("49.xxx.xxx.xxx");
       factory.setPort(5672);
       factory.setUsername("test");
       factory.setPassword("123456");

       // 创建连接
       Connection connection = factory.newConnection();
       // 创建信道
       Channel channel = connection.createChannel();
       // 创建交换器
       channel.exchangeDeclare("demo.exchange", BuiltinExchangeType.DIRECT);
       // 创建队列
       channel.queueDeclare("demo.queue", false, false, false, null);
       // 绑定交换器与队列关系
       channel.queueBind("demo.queue", "demo.exchange", "ai.zixing");

       // 所发送的消息
       String message = "消息生产者111";

       // 发送消息
       channel.basicPublish("demo.exchange", "ai.zixing", MessageProperties.PERSISTENT_TEXT_PLAIN,message.getBytes());

       channel.close();
       connection.close();
   }
}

消费者

package ai.zixing;

import com.rabbitmq.client.*;

import java.io.IOException;

public class RabbitmqConsumer {
   public static void main(String[] args) throws Exception{
       // 连接工厂
       ConnectionFactory factory = new ConnectionFactory();
       factory.setUsername("test");
       factory.setPassword("123456");

       Address[] addresses = {new Address("49.xx.xxx.xxx", 5672)};
       Connection connection = factory.newConnection(addresses);
       final Channel channel = connection.createChannel();

       channel.basicConsume("demo.queue", new DefaultConsumer(channel){
           @Override
           public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
               System.out.println("Cunsum  :" + new String(body));
               channel.basicAck(envelope.getDeliveryTag(), false); //告诉MQ 消费了消息  （消息确认机制）
           }
       });
       Thread.sleep(1000);
       channel.close();
       connection.close();
   }
}

报错一

	at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:120)
	at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:142)
	at com.rabbitmq.client.impl.AMQConnection.start(AMQConnection.java:407)
	at com.rabbitmq.client.impl.recovery.RecoveryAwareAMQConnectionFactory.newConnection(RecoveryAwareAMQConnectionFactory.java:63)
	at com.rabbitmq.client.impl.recovery.AutorecoveringConnection.init(AutorecoveringConnection.java:177)
	at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1150)
	at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1109)
	at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1067)
	at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1224)
	at ai.zixing.RabbitmqProducter.main(RabbitmqProducter.java:18)
Caused by: com.rabbitmq.client.ShutdownSignalException: connection error; protocol method: #method(reply-code=530, reply-text=NOT_ALLOWED - access to vhost '/' refused for user 'test', class-id=10, method-id=40)
	at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:66)
	at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:36)
	at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:443)
	at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:263)

看日志主要是
Caused by: com.rabbitmq.client.ShutdownSignalException: connection error; protocol method: #method(reply-code=530, reply-text=NOT_ALLOWED - access to vhost '/' refused for user 'test', class-id=10, method-id=40)
这是因为用户权限不够，给test添加权限

[root@VM_0_17_centos etc]# rabbitmqctl set_permissions -p "/" test ".*" ".*" ".*"
Setting permissions for user "test" in vhost "/" ...

报错二

Exception in thread "main" java.net.ConnectException: Connection refused: connect
   at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
   at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)
   at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
   at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
   at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
   at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
   at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)

是因为端口号写错（6672），在客户端连接的时候端口号是5672

运行成功之后可以在队列中看到发送的消息

消费者消费之后删除消息