Getting error in cxf web service with spring 3.0.

Question

I developed a web service using cxf. Implemented the client codes to invoke the web service.
The client codes running fine through JUnit test case but whenever I try to invoke the client through another service (after actual UI integration),
its throwing error while initializing the service. I'm using cxf 2.2.7 with spring 3.0
     // configuration stuffs
     public static final QName SERVICE_NAME = new QName("http://perksplus.com/WebServices/HealthPrize/Rewards/", "Rewards");
     //@Value("@{perks.api.wsdl.location}")
     private String wsdlLocation="https://www.perksplus.com/WebServices/HealthPrize/Rewards.asmx?wsdl";
     protected Rewards loadWSDL(){
        URL wsdlURL = null;
          try {               
              setApplicationContext(applicationContext);
              Resource lResource = getApplicationContext().getResource(wsdlLocation);
               wsdlURL = lResource.getURL();
          } catch (MalformedURLException e) {
               LOG.error("Invalid wsdl URL"+e);
          } catch (IOException e) {
               LOG.error("Error while loading the file"+e);
          this.rewards = new Rewards(wsdlURL, SERVICE_NAME); *// ERROR THROWING AT THIS LINE*
          return this.rewards;
     }Error stacktrace
javax.servlet.ServletException: org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.LinkageError: loader constraint violation: when resolving overridden method "org.apache.cxf.bus.spring.ControlledValidationXmlBeanDefinitionReader.doLoadBeanDefinitions(Lorg/xml/sax/InputSource;Lorg/springframework/core/io/Resource;)I" the class loader (instance of org/apache/catalina/loader/WebappClassLoader) of the current class, org/apache/cxf/bus/spring/ControlledValidationXmlBeanDefinitionReader, and its superclass loader (instance of org/apache/catalina/loader/StandardClassLoader), have different Class objects for the type org/springframework/core/io/Resource used in the signature
Can someone please help me here, to figure out whats wrong I'm doing or if I' m missing anything which causing this error?
(Thanks in adv).

Answer 1

My understanding of exception stack trace is that the two class loader are unable to match the argument type org/springframework/core/io/Resource in original method and its overridden method. And original method class loader and overridden method class loader are different.
This normally happens due to class clashes.