易学笔记-RabbitMQ教程5：根据多重标准接收消息（路由器类型为：topic）

• 根据多重标准接收消息（路由器类型为：topic）

1. 代码基础： 易学笔记-RabbitMQ教程3：一个消息发给所有消费者（路由器类型为：fanout）
2. 路由键的规则：
   1. 必须是一些单词的集合，而且中间用点号隔开，而且总长度不能超过255
   2. 不能出现*或者#
   3. 比如：stock.usd.nyse，nyse.vmw，quick.orange.rabbit
3. 绑定键的规则
   1. 必须是一些单词的集合，而且中间用点号隔开，而且总长度不能超过255
   2. 特殊绑定
      1. *（星号）仅代表一个单词
      2. #（井号）代表任意个单词
4. 路由键和绑定键的举例
   1. 比如：用三种属性描述动作消息：速度、颜色、物种：<speed>.<colour>.<species>
   2. 绑定键两种：
      1. Q1：*.orange.*
      2. Q2：
         1. *.*.rabbit
         2. lazy.#
   3. 路由键
      1. quick.orange.rabbit
         1. Q1：匹配 orange
         2. Q2：匹配 rabbit
      2. lazy.orange.elephant
         1. Q1：匹配 orange
         2. Q2：匹配 lazy
      3. quick.orange.fox
         1. Q1：匹配 orange
         2. Q2：完全不匹配
      4. lazy.brown.fox
         1. Q1：不匹配
         2. Q2：匹配 lazy
      5. lazy.pink.rabbit
         1. Q1：不匹配
         2. Q2：同时匹配rabbit和lazy，但是消息也是接收一次
      6. quick.brown.fox
         1. Q1：不匹配
         2. Q2：不匹配
      7. orange
         1. Q1：不匹配
         2. Q2：不匹配
      8. lazy .orange.male.rabbit
         1. Q1：不匹配
         2. Q2：匹配 lazy
5. topic和fanout、direct
   1. 如果绑定键为一个 #，则与fanout等同
   2. 如果绑定键不包含任何的#和*，则与direct等同
6. 新建生产者类：
7. 新建消费者类：
8. 测试：
   1. 消费者：按以下规则启动消费者
      1. 将String bingingKeys[] = {""}改为String bingingKeys[] = {"#"}，启动第一个消费者；
      2. 再改为String bingingKeys[] = {"kern.*"}，启动第二个消费者；
      3. 再改为String bingingKeys[] = {"*.critical"}，启动第三个消费者；
      4. 再改为String bingingKeys[] = {"kern.*", "*.critical"}，启动第四个消费者。
   2. 生产者：按以下规则分别启动，然后观察消费者
      1. 路由键为kern.critical 的消息：A critical kernel error；

         1.  [*] Waiting for messages. To exit press CTRL+C

             topic: #

             [x] Received 'kern.critical':'A critical kernel error.'

         2.  [*] Waiting for messages. To exit press CTRL+C

             topic: kern.*

             [x] Received 'kern.critical':'A critical kernel error.'

         3.  [*] Waiting for messages. To exit press CTRL+C

             topic: *.critical

             [x] Received 'kern.critical':'A critical kernel error.'

         4.  [*] Waiting for messages. To exit press CTRL+C

             topic: kern.*,*.critical

             [x] Received 'kern.critical':'A critical kernel error.'

      2. 路由键为kern.info 的消息：A kernel info；

         1.  [*] Waiting for messages. To exit press CTRL+C

             topic: #

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

         2.  [*] Waiting for messages. To exit press CTRL+C

             topic: kern.*

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

         3.  [*] Waiting for messages. To exit press CTRL+C

             topic: *.critical 不匹配，不接收

             [x] Received 'kern.critical':'A critical kernel error.'

         4.  [*] Waiting for messages. To exit press CTRL+C

             topic: kern.*,*.critical

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

      3. 路由键为auth.critical 的消息：A critical auth error；

         1.  [*] Waiting for messages. To exit press CTRL+C

             topic: #

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

             [x] Received 'auth.critical':'A critical auth error'

         2.  [*] Waiting for messages. To exit press CTRL+C

             topic: kern.*不匹配，不接收

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

         3.  [*] Waiting for messages. To exit press CTRL+C

             topic: *.critical

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'auth.critical':'A critical auth error'

         4.  [*] Waiting for messages. To exit press CTRL+C

             topic: kern.*,*.critical

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

             [x] Received 'auth.critical':'A critical auth error'

      4. 路由键为cron.warn 的消息：A cron waning；

         1.  [*] Waiting for messages. To exit press CTRL+C

             topic: #

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

             [x] Received 'auth.critical':'A critical auth error'

             [x] Received 'cron.warn':'A cron waning'

         2.  [*] Waiting for messages. To exit press CTRL+C

             topic: kern.*不匹配，不接收

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

         3.  [*] Waiting for messages. To exit press CTRL+C

             topic: *.critical不匹配，不接收

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'auth.critical':'A critical auth error'

         4.  [*] Waiting for messages. To exit press CTRL+C

             topic: kern.*,*.critical不匹配，不接收

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

             [x] Received 'auth.critical':'A critical auth error'

      5. 路由键为kern的消息：A cron kern：

         1.  [*] Waiting for messages. To exit press CTRL+C

             topic: #

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

             [x] Received 'auth.critical':'A critical auth error'

             [x] Received 'cron.warn':'A cron waning'

             [x] Received 'kern':'A cron kern'

         2.  [*] Waiting for messages. To exit press CTRL+C

             topic: kern.*不匹配，不接收

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

         3.  [*] Waiting for messages. To exit press CTRL+C

             topic: *.critical不匹配，不接收

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'auth.critical':'A critical auth error'

         4.  [*] Waiting for messages. To exit press CTRL+C

             topic: kern.*,*.critical不匹配，不接收

             [x] Received 'kern.critical':'A critical kernel error.'

             [x] Received 'kern.info':'A kernel info'

             [x] Received 'auth.critical':'A critical auth error'