ActiveMq的配置文件详细说明[转]

 

 

<beansxmlns="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.xsdhttp://activemq.org/config/1.0 http://activemq.apache.org/schema/activemq-core.xsdhttp://activemq.apache.org/camel/schema/spring><!-- persistent="true"表示要持久化存储消息，和子元素persistenceAdapter结合使用 --><!-- dataDirectory默认的存储持久化数据的目录 --><!-- brokerName 设置broker的name，在注意在网络上必须是唯一的--><!-- 更多参考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="${activemq.base}/data" useShutdownHook="false"><!-- Destination specific policies using destination names or wildcards --><!-- wildcards意义见http://activemq.apache.org/wildcards.html --><destinationPolicy><policyMap><policyEntries><!-- 这里使用了wildcards，表示所有以EUCITA开头的topic --><policyEntry topic="EUCITA.>" producerFlowControl="false" memoryLimit="10mb"><!-- 分发策略 --><dispatchPolicy><!-- 按顺序分发 --><strictOrderDispatchPolicy/></dispatchPolicy><!-- 恢复策略--><subscriptionRecoveryPolicy><!-- 只恢复最后一个message --><lastImageSubscriptionRecoveryPolicy/></subscriptionRecoveryPolicy></policyEntry></policyEntries></policyMap></destinationPolicy><!-- The transport connectors ActiveMQ will listen to --><transportConnectors><transportConnector name="openwire" uri="tcp://192.168.1.148:61616" discoveryUri="multicast://default"/><transportConnector name="ssl" uri="ssl://192.168.1.148:61617"/><transportConnector name="stomp" uri="stomp://192.168.1.148:61613"/><transportConnector name="xmpp" uri="xmpp://192.168.1.148:61222"/></transportConnectors><!-- 消息持久化方式 --><persistenceAdapter><amqPersistenceAdapter directory="${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>

 

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. <roundRobinDispatchPolicy>：Simple dispatch policy that sends a message to every subscription that matches the message.
2. <simpleDispatchPolicy>：Simple dispatch policy that sends a message to every subscription that matches the message.
3. <strictOrderDispatchPolicy>：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. <fixedCountSubscriptionRecoveryPolicy>： keep a fixed count of last messages.
2. <fixedSizedSubscriptionRecoveryPolicy>： keep a fixed amount of memory available in RAM for message history which is evicted in time order.
3. <lastImageSubscriptionRecoveryPolicy>：only keep the last message.
4. <noSubscriptionRecoveryPolicy>：disable recovery of messages.
5. <queryBasedSubscriptionRecoveryPolicy>：perform a user specific query mechanism to load any messages they may have missed.
6. <timedSubscriptionRecoveryPolicy>：keep a timed buffer of messages around in memory and use that to recover new subscriptions.