How to passing Maven Profiles value to Spring Bean XML - maven

Question

I'm new in Spring & Maven, I think my question is simple. But I cannot to figure and setup it. I have Maven POM like below:
<profiles>
<profile>
<id>qa</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<properties>
<db.driverClassName>oracle.jdbc.driver.OracleDriver</db.driverClassName>
<db.url>jdbc:oracle:thin:#10.148.36.89:1521:mmki</db.url>
<db.username>APW</db.username>
<db.password>apw</db.password>
</properties>
</profile>
<profile>
<id>prod</id>
<properties>
<db.driverClassName>oracle.jdbc.driver.OracleDriver</db.driverClassName>
<db.url>jdbc:oracle:thin:#10.148.36.88:1521:mmki</db.url>
<db.username>APW</db.username>
<db.password>apw</db.password>
</properties>
</profile>
</profiles>
My question is how I can passing the value from Maven profile to Spring bean property like below:
<!-- QA ENVIRONMENT -->
<!-- <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:#10.148.36.89:1521:mmki" />
<property name="username" value="APW" />
<property name="password" value="apw" />
</bean> -->
<!-- PRD ENVIRONMENT -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:#10.148.36.88:1521:mmki" />
<property name="username" value="APW" />
<property name="password" value="apw" />
</bean>
I'm so dumb for this question, but please everyone to answer and explain with the simple method.
Many thanks.

Answer 1

First:
Do not write user and pass at pom.xml file
Second:
You can have one applicationContext for each environment like applicationContext-prod.xml and applicationContext-qa.xml
On your pom.xml you can have one property for each profile like:
pom.xml
<profile>
<id>qa</id>
<properties>
<appContext>classpath:applicationContext-qa.xml</appContext>
...
</properties>
</profile>
<profile>
<id>prod</id>
<properties>
<appContext>classpath:applicationContext-prod.xml</appContext>
...
</properties>
</profile>
In web.xml you can write you context param like:
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>${appContext}</param-value>
</context-param>
If you write your passwords in the applicationContext files you do not need anything else. But, for security reasons I recommend you as best practice write your sensible environment values at external properties file:
You can have multiple *.properties on /etc/app
(production.properties and qa.properties)
And finally, on your applicationContext-prod.xml you can have your propertyConfigurer like:
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
<value>file:/etc/app/production.properties</value>
</property>
</bean>
....
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
....
<property name="password">
<value>${db.password}</value>
And on your applicationContext-qa.xml you can have your propertyConfigurer like:
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
<value>file:/etc/app/qa.properties</value>
</property>
</bean>
...
Obviously on your /etc/app/production.properties you have to write:
db.password=prodpass
Finally, on your /etc/app/qa.properties you have to write:
db.password=qapass