java - Issues with BeanPostProcessor -

there issue using beanpostprocessor. error log says method josh() in productfactory class missing class have such method , non-static. below code snippets.

web.xml

<bean class="demoproject.productpostprocessor" />      <context:annotation-config /> <context:component-scan base-package="demoproject" /> <bean name="productfactory" class="demoproject.productfactory" /> 

productfactory.java

public class productcreater{   public static void main(string[] args) {     applicationcontext context = new classpathxmlapplicationcontext("web.xml");          product copyproduct = (product) context.getbean("joshs");         system.out.println(copyproduct.getid());         system.out.println(copyproduct.getprice());    } } 

productfactory.java

package demoproject;  import org.springframework.beans.factory.annotation.value; import org.springframework.context.annotation.bean; import org.springframework.context.annotation.configuration; import org.springframework.context.annotation.lazy;  @configuration public class productfactory {       public productfactory() {         // todo auto-generated constructor stub     }      @bean(name="joshs")      public product josh(){         product josh = new battery();         josh.setid("cdrw");         return josh;     }   } 

productpostprocessor.java

package demoproject;  import org.springframework.beans.factory.config.beanpostprocessor;  public class productpostprocessor  implements beanpostprocessor{      public object postprocessbeforeinitialization(object bean, string beanname){         system.out.println("before initializing .. : "+beanname);         return beanname;     }      public object postprocessafterinitialization(object bean, string beanname){         system.out.println("after initializing .. : "+beanname);         return beanname;      }    } 

error log

info: destroying singletons in org.springframework.beans.factory.support.defaultlistablebeanfactory@7b09df06: defining beans [demoproject.productpostprocessor#0,org.springframework.context.annotation.internalconfigurationannotationprocessor,org.springframework.context.annotation.internalautowiredannotationprocessor,org.springframework.context.annotation.internalrequiredannotationprocessor,org.springframework.context.annotation.internalcommonannotationprocessor,productfactory,productfactory,org.springframework.context.annotation.configurationclasspostprocessor.importawareprocessor,joshs]; root of factory hierarchy exception in thread "main" org.springframework.beans.factory.beancreationexception: error creating bean name 'joshs' defined in class path resource [demoproject/productfactory.class]: no matching factory method found: factory bean 'productfactory'; factory method 'josh()'. check method specified name exists , non-static. 

somehow line <bean class="demoproject.productpostprocessor" /> in web.xml causing problem since when remove everyting works normally. how can debug program , fix it?

you're returning name of bean. postprocess methods supposed return actual bean itself. you're telling spring replace product bean string containing name.