Centos7.0 Rabbitmq 环境搭建及.NET 简单应用(二)

一、下载erlang 和rabbitmq 

二、安装环境

1、安装Erlang，安装完成测试安装结果 

[root@localhost Rabbitmq]# rpm -ivh erlang-19.0.4-1.el7.centos.x86_64.rpm
准备中... ################################# [100%]
正在升级/安装...
1:erlang-19.0.4-1.el7.centos ################################# [100%]
[root@localhost Rabbitmq]# erl
Erlang/OTP 19 [erts-8.0.3] [source] [64-bit] [smp:2:2] [async-threads:10] [hipe] [kernel-poll:false]
pvuf
Eshell V8.0.3 (abort with ^G)
1> 5+6 .
11
2> halt().

2、安装Rabbitmq并测试安装结果，

[root@localhost Rabbitmq]# rpm -ivh rabbitmq-server-3.6.6-1.el7.noarch.rpm
警告：rabbitmq-server-3.6.6-1.el7.noarch.rpm: 头V4 RSA/SHA1 Signature, 密钥 ID 6026dfca: NOKEY
错误：依赖检测失败：
socat 被 rabbitmq-server-3.6.6-1.el7.noarch 需要

[root@localhost Rabbitmq]# yum install socat

已加载插件：fastestmirror, langpacks
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
base | 3.6 kB 00:00:00
docker-main-repo | 2.9 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:02
(1/3): extras/7/x86_64/primary_db | 184 kB 00:00:01
(2/3): docker-main-repo/primary_db | 34 kB 00:00:08
(3/3): updates/7/x86_64/primary_db | 7.1 MB 00:04:02
Loading mirror speeds from cached hostfile
* base: centos.ustc.edu.cn
* extras: centos.ustc.edu.cn
* updates: mirrors.zju.edu.cn
正在解决依赖关系
--> 正在检查事务
---> 软件包 socat.x86_64.0.1.7.2.2-5.el7 将被 安装
--> 解决依赖关系完成

[root@localhost Rabbitmq]# rpm -ivh rabbitmq-server-3.6.6-1.el7.noarch.rpm
警告：rabbitmq-server-3.6.6-1.el7.noarch.rpm: 头V4 RSA/SHA1 Signature, 密钥 ID 6026dfca: NOKEY
准备中... ################################# [100%]
正在升级/安装...
1:rabbitmq-server-3.6.6-1.el7 ################################# [100%]
[root@localhost Rabbitmq]# cd /sbin/
[root@localhost sbin]# ./rabbitmq-plugins list
Configured: E = explicitly enabled; e = implicitly enabled
| Status: [failed to contact rabbit@localhost - status not shown]

[root@localhost sbin]# /sbin/service rabbitmq-server start
Redirecting to /bin/systemctl start rabbitmq-server.service
[root@localhost sbin]# ./rabbitmqctl status
Status of node rabbit@localhost ...
[{pid,5084},
{running_applications,[{rabbit,"RabbitMQ","3.6.6"},
{mnesia,"MNESIA CXC 138 12","4.14"},
{rabbit_common,[],"3.6.6"},
{os_mon,"CPO CXC 138 46","2.4.1"},
{ranch,"Socket acceptor pool for TCP protocols.",
"1.2.1"},
................

3、增加用户信息

[root@localhost sbin]# ./rabbitmqctl add_user admin admin #创建管理用户
Creating user "admin" ...

[root@localhost sbin]# ./rabbitmqctl set_user_tags admin adminstrator  #设置管理员
Setting tags for user "admin" to [adminstrator] ...

[root@localhost sbin]# ./rabbitmqctl  set_permissions admin ".*" ".*" ".*"  #设置权限

[root@localhost sbin]# ./rabbitmqctl list_users

Listing users ...
admin [adminstrator]
guest [administrator]

4、增加Rabbitmq配置文件rabbimq.config，配置防火墙

[root@localhost rabbitmq]# vi rabbitmq.config

写入内容：

[
{rabbit, [{tcp_listeners, [5672]}, {loopback_users, ["admin"]}]}
].

说明：

loopback_users：设置RabbitMq访问服务的用户。

tcp_listeners：设置RabbitMQ监听的IP地址与端口。

重启Rabbitmq服务

[root@localhost rabbitmq]# service rabbitmq-server stop
Redirecting to /bin/systemctl stop rabbitmq-server.service

[root@localhost rabbitmq]# service rabbitmq-server start
Redirecting to /bin/systemctl start rabbitmq-server.service

配置防火墙

[root@localhost rabbitmq]# firewall-cmd --zone=public --add-port=5672/tcp --permanent
success

[root@localhost rabbitmq]# firewall-cmd --zone=public --add-port=15672/tcp --permanent 
success
[root@localhost rabbitmq]# firewall-cmd --reload
success

[root@localhost sbin]# ./rabbitmq-plugins enable rabbitmq_management  #启用Web监控功能
The following plugins have been enabled:
mochiweb
webmachine
rabbitmq_web_dispatch
amqp_client
rabbitmq_management_agent
rabbitmq_management

Applying plugin configuration to rabbit@localhost... started 6 plugins.

 5、其他命令

[root@localhost sbin]# ./rabbitmqctl delete_user XXX

[root@localhost sbin]# ./rabbitmqctl change_passwork username password

[root@localhost sbin]# ./rabbitmqctl list_users

[root@localhost sbin]# ./rabbitmqctl list_queues

三、.NET环境简单应用

在.NET中使用RabbitMQ需要下载RabbitMQ的客户端程序集，可以使用Nuget下载使用，这就是RabbitMQ的客户端。

RabbitMQ是一个消息代理。他从消息生产者(producers)那里接收消息，然后把消息送给消息消费者（consumer）在发送和接受之间，他能够根据设置的规则进行路由，缓存和持久化。

1、发送信息代码

            string queueName = "Test";
            var factory = new ConnectionFactory();
            factory.HostName = "195.1.1.90";
            factory.UserName = "admin";
            factory.Password = "admin";

            using (var connection = factory.CreateConnection())
            {
                using (var channel = connection.CreateModel())
                {
                    channel.QueueDeclare(queueName, false, false, false, null);
                    string message = "XXXXXXXXXXXXXXXXX";
                    var body = Encoding.UTF8.GetBytes(message);

                    //设置消息持久化
                    IBasicProperties properties = channel.CreateBasicProperties();
                    properties.DeliveryMode = 2;

                    channel.BasicPublish("", queueName, properties, body);
                    Console.WriteLine(" Send Message: {0}", message);
                }
            }

2、接收信息代码

            string queueName = "Test";
            var factory = new ConnectionFactory();
            factory.HostName = "195.1.1.90";
            factory.UserName = "admin";
            factory.Password = "admin";

            using (var connection = factory.CreateConnection())
            {
                using (var channel = connection.CreateModel())
                {
                    //定义一个持久化队列，名称相同不会重复创建
                    channel.QueueDeclare(queueName, false, false, false, null);

                    //输入1，如果接收一个消息，在没有应答之前，客户端不会收到下一个消息
                    channel.BasicQos(0, 1, false);

                    var consumer = new QueueingBasicConsumer(channel);
                    channel.BasicConsume(queueName, false, consumer);

                    Console.WriteLine(" waiting for message.");
                    while (true)
                    {
                        //阻塞函数，获取队列中的消息
                        var ea = (BasicDeliverEventArgs)consumer.Queue.Dequeue();

                        var body = ea.Body;
                        var message = Encoding.UTF8.GetString(body);
                        Console.WriteLine("Received {0}", message);

                        //回复确认
                        channel.BasicAck(ea.DeliveryTag, false);
                    }
                }
            }