ActiveMQ实战篇之 java和spring xml创建Broker(一)

ActivityMQ创建broker是直接通过配置IOC注入的，所以了解如何用纯JAVA代码和spring xml 创建broker可以让我们对AcitivtyMQ有一个更深入的了解

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原本的配置

<broker xmlns="http://activemq.apache.org/schema/core" brokerName="myBroker" dataDirectory="${activemq.base}/data">          <transportConnectors>           <transportConnector name="openwire"            uri="tcp://localhost:61616" />          </transportConnectors>         <plugins>            <simpleAuthenticationPlugin>             <users>               <authenticationUser username="admin"                                   password="password"                                   groups="admins,publishers,consumers"/>               <authenticationUser username="publisher"                                   password="password"                                   groups="publishers,consumers"/>               <authenticationUser username="consumer"                                   password="password"                                   groups="consumers"/>               <authenticationUser username="guest"                                   password="password"                                   groups="guests"/>              </users>            </simpleAuthenticationPlugin>          </plugins></broker>

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用纯JAVA实现

BrokerService broker =                new BrokerService();        broker.setBrokerName("myBroker");        broker.setDataDirectory("data/");        SimpleAuthenticationPlugin authentication = new SimpleAuthenticationPlugin();        List<AuthenticationUser> users = new ArrayList<AuthenticationUser>();        users.add(new AuthenticationUser("admin", "password", "admins,publishers,consumers"));        users.add(new AuthenticationUser("publisher", "password", "publishers,consumers"));        users.add(new AuthenticationUser("consumer", "password", "consumers"));        users.add(new AuthenticationUser("guest", "password", "guests"));        authentication.setUsers(users);        broker.setPlugins(new BrokerPlugin[] { authentication });        broker.addConnector("tcp://localhost:61616");        broker.start();        System.out.println();        System.out.println("Press any key to stop the broker");        System.out.println();        System.in.read();

可以实现同样的功能，但是运行之后我们可以看到tcp端口61616开启用于监听，但是，和配置实现不同的是，纯java实现并没有开启服务器，于是我们再模仿开启服务器操作。

HTTPDiscoveryAgent httpDiscoveryAgent = new HTTPDiscoveryAgent();httpDiscoveryAgent.setStartEmbeddRegistry(true);httpDiscoveryAgent.setRegistryURL("http://localhost:8161");System.out.println(httpDiscoveryAgent.getRegistryURL());httpDiscoveryAgent.start();broker.addService(httpDiscoveryAgent);

只需要在broker.start前面加上这段代码即可，这段具体怎么做？需要进行源码搜索源码分析才能知道为什么这么做，当然有时候需要打断点查看哪一段代码有错误或者缺了什么包。

需要这些包

这样jetty服务器能够正常开启了

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用spring xml实现

在项目的根目录上加上spring配置文件

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:amq="http://activemq.apache.org/schema/core" 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.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd"><amq:brokerbrokerName="localhost" dataDirectory="${activemq.base}/data">  <amq:transportConnectors>   <amq:transportConnector name="openwire"    uri="tcp://localhost:61616" />  </amq:transportConnectors>  <amq:plugins>   <amq:simpleAuthenticationPlugin>    <amq:users>     <amq:authenticationUser username="admin"                             password="password"                               groups="admins,publishers,consumers"/>     <amq:authenticationUser username="publisher"                             password="password"                             groups="publishers,consumers"/>     <amq:authenticationUser username="consumer"                             password="password"                             groups="consumers"/>     <amq:authenticationUser username="guest"                             password="password"                             groups="guests"/>    </amq:users>   </amq:simpleAuthenticationPlugin>  </amq:plugins> </amq:broker></beans>

添加一个Factory，负责创建Broker

package com.tgb.activemq;import java.net.URI;import org.apache.activemq.broker.BrokerFactory;import org.apache.activemq.broker.BrokerService;import org.apache.activemq.xbean.XBeanBrokerFactory;public class Factory {    public static void main(String[] args) throws Exception {        System.setProperty("activemq.base", System.getProperty("user.dir"));        String configUri = "xbean:Spring-simgle.xml";        URI brokerUri = new URI(configUri);        BrokerService broker = BrokerFactory.createBroker(brokerUri);        broker.start();        System.out.println();        System.out.println("Press any key to stop the broker");        System.out.println();        System.in.read();    }}

xbean:前缀是告诉Factory使用 XBeanBrokerFactory创建Broker

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