ActiveMQ5.0實戰三:使用Spring傳送,消費topic和queue訊息
阿新 • • 發佈:2019-01-26
簡介
上一篇http://www.iteye.com/topic/15317介紹了ActiveMQ5.0的安裝,這一篇將介紹的配置。ActiveMQ包含了很多features(詳見http://activemq.apache.org/features.html ),
不同的需求,不同的環境,需要不同的features,當然需要不同的配置。在這裡我只寫了最基本的配置,算是拋磚了,希望引出更多關於ActiveMQ的高階配置。
假設已經正確安裝ActiveMQ5.0,同時及其IP地址為192.168.1.148,具體使用時可以改為自己的IP。下面講解的配置實現的features如下:
- 客戶端可以通過tcp://192.168.1.148連線ActiveMQ。
- 訊息持久化儲存,重啟伺服器不會丟失訊息。
- 可以通過http://192.168.1.148:8161/admin監控ActiveMQ伺服器
配置
Xml程式碼- <beans
- xmlns="http://www.springframework.org/schema/beans"
- xmlns:amq="http://activemq.org/config/1.0"
-
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
- http://activemq.org/config/1.0 http://activemq.apache.org/schema/activemq-core.xsd
- http://activemq.apache.org/camel/schema/spring>
- <!-- persistent="true"表示要持久化儲存訊息,和子元素persistenceAdapter結合使用 -->
- <!-- dataDirectory預設的儲存持久化資料的目錄 -->
-
<!-- brokerName 設定broker的name,在注意在網路上必須是唯一的-->
- <!-- 更多參考http://activemq.apache.org/xbean-xml-reference-50.html#XBeanXMLReference5.0-brokerelement -->
- <broker xmlns="http://activemq.org/config/1.0" brokerName="192.168.1.148" persistent ="true" dataDirectory="${activemq.base}/data" useShutdownHook="false">
- <!-- Destination specific policies using destination names or wildcards -->
- <!-- wildcards意義見http://activemq.apache.org/wildcards.html -->
- <destinationPolicy>
- <policyMap>
- <policyEntries>
- <!-- 這裡使用了wildcards,表示所有以EUCITA開頭的topic -->
- <policyEntry topic="EUCITA.>" producerFlowControl="false" memoryLimit="10mb">
- <!-- 分發策略 -->
- <dispatchPolicy>
- <!-- 按順序分發 -->
- <strictOrderDispatchPolicy/>
- </dispatchPolicy>
- <!-- 恢復策略-->
- <subscriptionRecoveryPolicy>
- <!-- 只恢復最後一個message -->
- <lastImageSubscriptionRecoveryPolicy/>
- </subscriptionRecoveryPolicy>
- </policyEntry>
- </policyEntries>
- </policyMap>
- </destinationPolicy>
- <!-- The transport connectors ActiveMQ will listen to -->
- <transportConnectors>
- <transportConnector name="openwire" uri="tcp://192.168.1.148:61616" discoveryUri="multicast://default"/>
- <transportConnector name="ssl" uri="ssl://192.168.1.148:61617"/>
- <transportConnector name="stomp" uri="stomp://192.168.1.148:61613"/>
- <transportConnector name="xmpp" uri="xmpp://192.168.1.148:61222"/>
- </transportConnectors>
- <!-- 訊息持久化方式 -->
- <persistenceAdapter>
- <amqPersistenceAdapter directory="${activemq.base}/data"/>
- </persistenceAdapter>
- </broker>
- <!-- lets create a command agent to respond to message based admin commands on the ActiveMQ.Agent topic -->
- <commandAgent xmlns="http://activemq.org/config/1.0"/>
- <!-- An embedded servlet engine for serving up the Admin console -->
- <jetty xmlns="http://mortbay.com/schemas/jetty/1.0">
- <connectors>
- <nioConnector port="8161" />
- </connectors>
- <handlers>
- <webAppContext contextPath="/admin" resourceBase="${activemq.base}/webapps/admin" logUrlOnStart="true" />
- <webAppContext contextPath="/demo" resourceBase="${activemq.base}/webapps/demo" logUrlOnStart="true" />
- </handlers>
- </jetty>
- </beans>
註釋
DispathPolicy
ActiveMQ支援3中不同的分發策略(避免翻譯了以後誤解,這裡用原文):
- <roundRobinDispatchPolicy>:Simple dispatch policy that sends a message to every subscription that matches the message.
- <simpleDispatchPolicy>:Simple dispatch policy that sends a message to every subscription that matches the message.
- <strictOrderDispatchPolicy>:Dispatch policy that causes every subscription to see messages in the same order.
SubscriptionRecoveryPolicy
ActiveMQ支援6種恢復策略,可以自行選擇使用不同的策略
- <fixedCountSubscriptionRecoveryPolicy>: keep a fixed count of last messages.
- <fixedSizedSubscriptionRecoveryPolicy>: keep a fixed amount of memory available in RAM for message history which is evicted in time order.
- <lastImageSubscriptionRecoveryPolicy>:only keep the last message.
- <noSubscriptionRecoveryPolicy>:disable recovery of messages.
- <queryBasedSubscriptionRecoveryPolicy>:perform a user specific query mechanism to load any messages they may have missed.
- <timedSubscriptionRecoveryPolicy>:keep a timed buffer of messages around in memory and use that to recover new subscriptions.
PersistenceAdapter
http://activemq.apache.org/persistence 講解了關於persistence的資訊。ActiveMQ5.0使用AMQ Message Store持久化訊息,這種方式提供了很好的效能(The AMQ Message Store is an embeddable transactional message storage solution that is extremely fast and reliable.) 預設使用該儲存方式即可,如果想使用JDBC來儲存,可以查詢文件配置。
Summary
本篇文章只提供了基本配置資訊。如果需要更多的文章,可以檢視ActiveMQ的文件。
講了安裝和簡單的配置,下一篇將介紹和Sping的整合,以及多個queue,多個topic,多個producer,多個consumer的配置,使用。