ActiveMQ5.0实战二: 基本配置

简介

上一篇http://www.iteye.com/topic/15317介绍了ActiveMQ5.0的安装，这一篇将介绍的配置。ActiveMQ包含了很多features（详见http://activemq.apache.org/features.html ），??
不同的需求，不同的环境，需要不同的features，当然需要不同的配置。在这里我只写了最基本的配置，算是抛砖了，希望引出更多关于ActiveMQ的高级配置。
假设已经正确安装ActiveMQ5.0，同时及其IP地址为192.168.1.148，具体使用时可以改为自己的IP。下面讲解的配置实现的features如下：

1. 客户端可以通过tcp://192.168.1.148连接ActiveMQ。
2. 消息持久化保存，重启服务器不会丢失消息。
3. 可以通过http://192.168.1.148:8161/admin监控ActiveMQ服务器

配置

ActiveMQ默认使用的是XML格式配置，从4.0版本开始用MBean的方式实现XML配置，配置文件在${activemq.home}/conf目录下，文件名为activemq.xml。最新的默认配置见
http://svn.apache.org/repos/asf/activemq/trunk/assembly/src/release/conf/activemq.xml 。下面为本篇文章使用的配置，及重要部分的解释。

?

<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>??

<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&gt;

&lt;!-- persistent=" true"表示要持久化存储消息，和子元素persistenceadapter结合使用="" --="">

<!---->

<!---->

<!---->

<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.&gt;" 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. <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.

PersistenceAdapter

http://activemq.apache.org/persistence 讲解了关于persistence的信息。ActiveMQ5.0使用AMQ Message Store 持久化消息，这种方式提供了很好的性能（The AMQ Message Store is an embeddable transactional message storage solution that is extremely fast and reliable.） 默认使用该存储方式即可，如果想使用JDBC来存储，可以查找文档配置。?

Summary

本篇文章只提供了基本配置信息。如果需要更多的文章，可以查看ActiveMQ的文档。

讲了安装和简单的配置，下一篇将介绍和Sping的整合，以及多个queue，多个topic，多个producer，多个consumer的配置，使用。

礼物 2008-12-31 22:09 发表评论