java - how to read properties file using spring and exposed to class -

i using spring 3.0.5 , trying read properties files make kind of validation datasource. getting null when use @value ,below cfg.

in applicationcontext.xml

  <bean id="propertyconfigurer"       class="org.springframework.beans.factory.config.propertyplaceholderconfigurer">   <property name="location" value="classpath:database.properties"/>    <bean id="mydatasource" class="org.apache.commons.dbcp.basicdatasource" destroy-method="close">             <property name="driverclassname" value="${jdbc.driverclassname}" />             <property name="url" value="${jdbc.url}" />             <property name="username" value="${jdbc.username}" />             <property name="password" value="${jdbc.password}" />  </bean>// here establishing data-source. 

the class want exposed values of properties file

@component public class propertyreaderbean {  //@value("#{propertyconfigurer1[dailylimit]}")      //@value("#{database['jdbc.driverclassname']}") @value("${jdbc.driverclassname}")// tried 3 still getting null private string limit; public string getlimit()  {     system.out.println(" limit : "+limit);     return limit; }  public void setlimit(string limit) {     system.out.println(" limit : "+this.limit);     this.limit = limit; } 

and databse.properties file

jdbc.driverclassname=com.mysql.jdbc.driver jdbc.url=jdbc:mysql://localhost:3306/imps jdbc.username=root jdbc.password=root 

so whenever trying access values properties file using above configuration, getting null, please guide.

update: setter method of propertyreaderbean not working, have checked stacktrace, when add in xml can read properties file values.

<bean id="propertydao" class="com.alw.imps.validator.propertyreaderbean">           <property name="limit" value="${jdbc.password}"></property>         </bean>   

a cause @value doesn't work. did declare < context:annotation-config /> in application context?