Question

I haven’t gotten my head wrapped around Spring yet, so correct me if this question doesn’t make sense…

I have a PropertyPlaceholderConfigurer

<bean id='rdbmPropertiesPlacholder' class='org.springframework.beans.factory.config.PropertyPlaceholderConfigurer' lazy-init='false'>     <property name='location' value='classpath:/properties/rdbm.properties' /> </bean> 

And I have a bean being injected I guess?

<bean id='PortalDb' class='org.apache.commons.dbcp.BasicDataSource'>     <property name='driverClassName' value='${hibernate.connection.driver_class}' />     <property name='url' value='${hibernate.connection.url}' />     <property name='username' value='${hibernate.connection.username}' />     <property name='password' value='${hibernate.connection.password}' />     ... 

What I want is a second placeholder pointing to a different properties file with the username/password so that I can split up the properties into two different files. Then the database connection information can be separate from the db username/password, and I can source control one and not the other.

I’ve tried basically copying the rdbmPropertiesPlaceholder with a different id and file and trying to access the properties, but it doesn’t work.

This code is from the uPortal open source web portal project.

Answer 1

Using this notation lets you specify multiple files:

 <bean id='rdbmPropertiesPlacholder' class='org.springframework.beans.factory.config.PropertyPlaceholderConfigurer' lazy-init='false'>      <property name='locations'>        <list>            <value>classpath:/properties/rdbm.properties</value>            <value>classpath:/properties/passwords.properties</value>        </list>     </property>  </bean> 

The propertyplaceholderconfigurerer just merges all of these to look like there’s only one, so your bean definitions do not know where the properties come from.