Example 1

<bean id="whitespaceAspect" class="com.extend.aop.TrimInterceptor" />
  <aop:config>
    <aop:aspect ref="TrimwhitespaceAspect">
      <aop:pointcut id="trimWhitespacePointCut"
        expression="execution(* com.base.dao.CommonDAO.selec*(..)) )" />
      <aop:after-returng pointcut-ref="trimWhitespacePointCut"
        method="trimWhitespaces" returng="returnedData" />
    </aop:aspect>
  </aop:config>