Using placeholders in Jetty contextXML file - maven

Question

I'm using Maven and jetty plugin to local start my application.
And I have seen way that you could use placeholders in Jetty contextXML.
Here is part of my pom.xml (located in separate module) where I connected jetty plugin:
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<configuration>
<stopKey>${test.jetty.stop-key}</stopKey>
<stopPort>${test.jetty.stop-port}</stopPort>
<webAppConfig>
<contextPath>/${test.contextPath}/*</contextPath>
</webAppConfig>
<httpConnector>
<port>${jetty.port}</port>
<host>${jetty.host}</host>
</httpConnector>
<contextXml>${project.basedir}/src/main/resources/jetty/${jetty.mode}-jetty.xml</contextXml>
</configuration>
<dependencies>
...
</dependencies>
</plugin>
Here is part of my stub-jetty.xml file:
<Configure class="org.eclipse.jetty.webapp.WebAppContext">
...
<New id="loggerCF" class="org.eclipse.jetty.plus.jndi.Resource">
<Arg></Arg>
<Arg>jms/logger/connectionFactory/loggerCF</Arg>
<Arg>
<New class="org.apache.activemq.ActiveMQConnectionFactory">
<Arg>tcp://${active-mq.host}:${active-mq.port}</Arg>
</New>
</Arg>
</New>
</Configure>
Parameters "active-mq.host" and "active-mq.port" defined in main pom.xml file.
When I run I receive next exception:
Caused by: java.net.URISyntaxException: Illegal character in authority at index 6: tcp://${active-mq.host}:${active-mq.port}
at java.net.URI$Parser.fail (URI.java:2848)
...
So I understand that Jetty not understand that needed to change placeholders to values from Maven properties. How to fix this problem or what I could read about this?

Answer 1

You can't directly reference properties defined in Maven configurations. The desired behavior could be achieved with System Properties. You can set it up as a part of jetty-maven-plugin configuration, the required option is systemProperties or systemPropertiesFile.
Here is a rough example (please note that I haven't checked it):
<New class="org.apache.activemq.ActiveMQConnectionFactory">
<Arg>tcp://<SystemProperty name="active-mq.host"/>:<SystemProperty name="active-mq.port"/></Arg>
</New>
and pom:
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>maven-jetty-plugin</artifactId>
<configuration>
<systemProperties>
<systemProperty>
<name>active-mq.host</name>
<value>${active-mq.host}</value>
</systemProperty>
<systemProperty>
<name>active-mq.port</name>
<value>${active-mq.port}</value>
</systemProperty>
</systemProperties>
</configuration>
</plugin>