java - Sporadic NoSuchBeanDefinitionException when trying to autowire field -


i've application-config.xml defined follows,

... <beans>    <bean id="servicefactory" class="com.example.myservicefactory" />    <bean id="myaction" class="com.example.myaction" scope="request">     <aop:scoped-proxy/>    </bean>    <bean id="myservice" class="com.example.myservice" factory-bean="servicefactory" factory-method="getservice">     <constructor-arg type="java.lang.string" value="myserviceconfig" />    </bean> </beans> ... 

as can see, 'myaction' bean request scoped , in myaction file i've following.

public class myaction {     @autowired     protected myservice myservice; } ... 

sometimes, not always, see autowiring of dependency myservice fails. can't figure out if has in way way i've defined in application-context.xml or if has else. me out here?

edit1:

spring log says

org.springframework.beans.factory.beancreationexception: error creating bean name 'myaction': injection of autowired dependencies failed; nested exception org.springframework.beans.factory.beancreationexception: not autowire field: protected com.example.myservice; nested exception org.springframework.beans.factory.nosuchbeandefinitionexception: no matching bean of type [com.example.myservice] found dependency: expected @ least 1 bean qualifies autowire candidate dependency. dependency annotations: {@org.springframework.beans.factory.annotation.autowired(required=true)}     @ org.springframework.beans.factory.annotation.autowiredannotationbeanpostprocessor.postprocesspropertyvalues(autowiredannotationbeanpostprocessor.java:287)     @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.populatebean(abstractautowirecapablebeanfactory.java:1106)     @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.docreatebean(abstractautowirecapablebeanfactory.java:517)     @ org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.createbean(abstractautowirecapablebeanfactory.java:456)     @ org.springframework.beans.factory.support.abstractbeanfactory$1.getobject(abstractbeanfactory.java:294)     @ org.springframework.beans.factory.support.defaultsingletonbeanregistry.getsingleton(defaultsingletonbeanregistry.java:225)     @ org.springframework.beans.factory.support.abstractbeanfactory.dogetbean(abstractbeanfactory.java:291)     @ org.springframework.beans.factory.support.abstractbeanfactory.getbean(abstractbeanfactory.java:193)     @ org.springframework.beans.factory.support.defaultlistablebeanfactory.preinstantiatesingletons(defaultlistablebeanfactory.java:585)     @ org.springframework.context.support.abstractapplicationcontext.finishbeanfactoryinitialization(abstractapplicationcontext.java:913)     @ org.springframework.context.support.abstractapplicationcontext.refresh(abstractapplicationcontext.java:464)     @ org.springframework.web.context.contextloader.configureandrefreshwebapplicationcontext(contextloader.java:384)     @ org.springframework.web.context.contextloader.initwebapplicationcontext(contextloader.java:283)     @ org.springframework.web.context.contextloaderlistener.contextinitialized(contextloaderlistener.java:111)     @ org.apache.catalina.core.standardcontext.listenerstart(standardcontext.java:4723)     @ org.apache.catalina.core.standardcontext$1.call(standardcontext.java:5226)     @ org.apache.catalina.core.standardcontext$1.call(standardcontext.java:5221)     @ java.util.concurrent.futuretask$sync.innerrun(futuretask.java:334)     @ java.util.concurrent.futuretask.run(futuretask.java:166)     @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1110)     @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:603)     @ java.lang.thread.run(thread.java:722) 


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