Is it possible to have multiple PropertyPlaceHolderConfigurer in my applicationContext?

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Yes you can do more than one. Be sure to set ignoreUnresolvablePlaceholders so that the first will ignore any placeholders that it can’t resolve.

<bean id="ppConfig1" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
   <property name="ignoreUnresolvablePlaceholders" value="true"/>
   <property name="locations">
    <list>
             <value>classpath*:/my.properties</value>
    </list>
  </property>
</bean>

<bean id="ppConfig2" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
   <property name="ignoreUnresolvablePlaceholders" value="false"/>
   <property name="locations">
    <list>
             <value>classpath*:/myOther.properties</value>
    </list>
  </property>
</bean>

Depending on your application, you should investigate systemPropertiesMode, it allows you to load properties from a file, but allow the system properties to override values in the property file if set.

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