java - @Value Annotation and a Database PropertyPlaceHolderConfigurer -

i've got 2 propertyplaceholderconfigurer in spring xml. first 1 obtains application properties file. second 1 obtains user properties database , looks this:

<myconfiguration> <bean id="databaseproperties"             class="org.springframework.beans.factory.config.propertyplaceholderconfigurer">             <property name="systempropertiesmodename" value="system_properties_mode_override" />             <property name="properties">                  <bean class="org.apache.commons.configuration.configurationconverter"                     factory-method="getproperties">                     <constructor-arg>                         <ref bean="propertiessource" />                     </constructor-arg>                 </bean>             </property>         </bean>          <bean id="propertiessource" class="org.apache.commons.configuration.databaseconfiguration">             <constructor-arg type="javax.sql.datasource" ref="tomcatdatasource" />             <constructor-arg value="application_properties" />             <constructor-arg value="property_key" />             <constructor-arg value="property_value" />         </bean>          <bean id="propertiesservice" class="com.xxx.propertiesserviceimpl">             <property name="propertiessource" ref="propertiessource"></property>         </bean> <myconfiguration> 

it works , can access these properties injecting 'propertiesservice' like:

@autowired private propertiesservice propertiesservice; 

which is:

public class propertiesserviceimpl implements propertiesservice {      @autowired     private databaseconfiguration propertiessource;       private properties properties;      @override     public string getproperty(string key) {         if (properties == null) {             properties = configurationconverter.getproperties(propertiessource);         }         return properties.getproperty(key);     }       @override     public properties getproperties() {         if (properties == null) {             properties = configurationconverter.getproperties(propertiessource);         }         return properties;     } 

the problem use @value annotation not work.

i've tried:

private @value("#{propertiesservice.helloworld}") string helloworld; 

and, of course, property exists , reachable through 'propertiesservice' results in next error:

caused by: org.springframework.expression.spel.spelevaluationexception: el1008e:(pos 18): property or field 'helloworld' cannot found on object of type 'com.infraportal.model.properties.propertiesserviceimpl' - maybe not public?     @ org.springframework.expression.spel.ast.propertyorfieldreference.readproperty(propertyorfieldreference.java:224)     @ org.springframework.expression.spel.ast.propertyorfieldreference.getvalueinternal(propertyorfieldreference.java:94)     @ org.springframework.expression.spel.ast.propertyorfieldreference.access$000(propertyorfieldreference.java:46)     @ org.springframework.expression.spel.ast.propertyorfieldreference$accessorlvalue.getvalue(propertyorfieldreference.java:374)     @ org.springframework.expression.spel.ast.compoundexpression.getvalueinternal(compoundexpression.java:88)     @ org.springframework.expression.spel.ast.spelnodeimpl.getvalue(spelnodeimpl.java:120)     @ org.springframework.expression.spel.standard.spelexpression.getvalue(spelexpression.java:242)     @ org.springframework.context.expression.standardbeanexpressionresolver.evaluate(standardbeanexpressionresolver.java:161) 

which makes me think spring looking 'gethelloworld()' method instead using 'getproperty(string key)'

any suggestion?

you need explicitly specify method invoked, on bean referred in el, , supply argument value below

@value("#{propertiesservice.getproperty('helloworld')}")  private string helloworld;