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From Pid <>
Subject Re: Vhost-specific configuration for deployed apps?
Date Thu, 12 Jul 2012 21:19:59 GMT
On 11/07/2012 16:12, Dave Shevett wrote:
> Hi folks, this has come up in the list archives a couple times, but I'm
> having a devil of a time getting it working right.
> I'm trying to set a basic set of properties to a deployed app into
> Tomcat.  Note that this app is being deployed via the tomcat manager (in
> fact it's coming from Jenkins), and is in a VHost.
> The problem is I can't find the magic combination to get a couple basic
> config params (in this case database connection details) on a per-vhost
> basis to be available to the app.
> Right now I have a Spring PPC loading properties:
> <bean id="propertyPlaceholderConfigurer"
> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
> 	<property name="location">
>       		<value></value>
> 	</property>
> </bean>
> which loads '' off the classpath. This is working, but I
> think Tomcat does not have separate classpaths for each vhost, so I
> can't just drop '' into Catalina/hostname/ and have it
> referenced for JUST that vhost, is that correct?


If you really need separate host configs, use split CATALINA_HOST,
CATALINA_BASE - see RUNNING.txt in your distribution.

Then you can refer to a resource inside Spring:

  <util:properties id="appProps"
  <context:property-placeholder properties-ref="appProps"/>


> I can't build config parameters into the app, since the app needs to be
> generic (a .war file).  I need to pass parameters into the
> applicationContext.xml on a per-vhost basis, with the results here:
>   <bean id="com.stonekeep.congo.database.Pool"
> class="com.mchange.v2.c3p0.ComboPooledDataSource"
>     destroy-method="close">
>     <property name="driverClass" value="com.mysql.jdbc.Driver"/>
>     <property name="testConnectionOnCheckout" value="true"/>
>     <property name="jdbcUrl" value="${congo.jdbcurl}" />
>     <property name="user" value="${congo.user}" />
>     <property name="password" value="${congo.password}" />
>   </bean>
> I've thought about using <Context> blocks in the vhost, or in the <Host>
> block for the vhost, but I can't figure out the proper mojo to get those
> Context parameters into the Spring applicationContext.
> My Spring is weak, I do apologize, but would really appreciate any help.
> Thanks!
> 	-d
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