Spring Provided beans

Spring Provided beans

BeanPostProcessor Interface
BeanFactoryPostProcessor Interface
BeanNameAware
BeanFactoryAware
ApplicationContextAware

These beans related to :Spring Bean Life Cycle



org.springframework.beans.factory.config.PropertyPlaceholderConfigurer

Set properties from a properties file. Use placeholder ${} ref  to property name

Set <bean> PropertyPlaceholderConfigurer, or use <context:property-placeholder>

Notice: only work in ApplicationContext. Does NOT work with BeanFactory

<!-- Use PropertyPlaceholderConfigurer as a bean -->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
 <property name="locations">
  <list>
   <value>com/gvace/dispatch/db.properties</value>
   <value>com/gvace/dispatch/db1.properties</value>
  </list>
 </property>
</bean>
<!-- Or use <context:property-placeholder>
<context:property-placeholder location="classpath:com/gvace/dispatch/db.properties, classpath:com/gvace/dispatch/db1.properties"/>
-->
<bean id="dbutil" class="com.gvace.dispatch.DBUtil" >
 <property name="drivername"><value>${drivername}</value></property>
 <property name="url" value="${url}"></property>
 <property name="username" value="${username}"></property>
 <property name="pwd" value="${pwd}"></property>
</bean>