ActiveMQ的activemq.xml详细配置讲解

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 <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>





   <broker xmlns="http://activemq.org/config/1.0" brokerName="192.168.1.148" persistent ="true" dataDirectory="${activemq.base}/data" useShutdownHook="false">



     <destinationPolicy>
       <policyMap>
         <policyEntries>

           <policyEntry topic="EUCITA.>" producerFlowControl="false" memoryLimit="10mb">

         <dispatchPolicy>

               <strictOrderDispatchPolicy/>
             dispatchPolicy>

             <subscriptionRecoveryPolicy>

               <lastImageSubscriptionRecoveryPolicy/>
             subscriptionRecoveryPolicy>
           policyEntry>
         policyEntries>
       policyMap>
     destinationPolicy>


     <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>


     <persistenceAdapter>
       <amqPersistenceAdapter directory="${activemq.base}/data"/>
     persistenceAdapter>
 broker>


     <commandAgent xmlns="http://activemq.org/config/1.0"/>


   <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>

注释

关于XML配置中元素的具体信息可以参考http://activemq.apache.org/xbean-xml-reference-50.html 下面介绍本篇配置使用的一些重要元素。

DispathPolicy

ActiveMQ支持3中不同的分发策略（避免翻译了以后误解，这里用原文）：

1. ：Simple dispatch policy that sends a message to every subscription that matches the message.
2. ：Simple dispatch policy that sends a message to every subscription that matches the message.
3. ：Dispatch policy that causes every subscription to see messages in the same order.

SubscriptionRecoveryPolicy

ActiveMQ支持6种恢复策略，可以自行选择使用不同的策略

1. ： keep a fixed count of last messages.
2. ： keep a fixed amount of memory available in RAM for message history which is evicted in time order.
3. ：only keep the last message.
4. ：disable recovery of messages.
5. ：perform a user specific query mechanism to load any messages they may have missed.
6. ：keep a timed buffer of messages around in memory and use that to recover new subscriptions.

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