<bean id="dbProperties" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="locations">
        <list>
            <value>classpath:db.properties</value>
            <value>file:activiti-rest.properties</value>
        </list>
    </property>
    <property name="ignoreUnresolvablePlaceholders" value="true" />
    <property name="ignoreResourceNotFound" value="true" />
</bean>

<bean id="dataSource"
    class="org.springframework.jdbc.datasource.SimpleDriverDataSource">
    <property name="driverClass" value="${jdbc.driver}" />
    <property name="url" value="${jdbc.url}" />
    <property name="username" value="${jdbc.username}" />
    <property name="password" value="${jdbc.password}" />
</bean>

db=mysql
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://myHost/activitidb?characterEncoding=UTF-8
jdbc.username=myUser
jdbc.password=myPass