initialization of spring beans in jetty 7.1.4
When I start a webapp that has a spring configuration in jetty, I see two calls to initialization (@PostConstruct methods). web.xml declares a ContextLoaderListener and provides contextConfigLocation.
This seems wrong. (spring 3.0.3). Is there something I've done?
EDIT
My web.xml calls out both the DispatcherServlet and the org.springframework.web.context.ContextLoaderListener. If I remove the later, I stop seeing two initializations --- but my app fails in the jetty-maven-plugin with
No WebApplicationContext found: no ContextLoaderListener registered?
EDIT 2 :
Got it. The dispatch servlet will find some context files by conventional name (*-servlet.xml), and so calling that file out again in the contextConfigLocation led to it being loaded twice.
Stack trace 1:
Segmenter.initialize() line: 63
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object...) line: 597
InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(Object) line: 340
InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(Object, String) line: 293
CommonAnnotationBeanPostProcessor(InitDestroyAnnotationBeanPostProcessor).postProcessBeforeInitialization(Object, String) line: 130
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).applyBeanPostProcessorsBeforeInitialization(Object, String) line: 394
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).initializeBean(String, Object, RootBeanDefinition) line: 1405
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).doCreateBean(String, RootBeanDefinition, Object[]) line: 519
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).createBean(String, RootBeanDefinition, Object[]) line: 456
AbstractBeanFactory$1.getObject() line: 291
DefaultListableBeanFactory(DefaultSingletonBeanRegistry).getSingleton(String, ObjectFactory) line: 222
DefaultListableBeanFactory(AbstractBeanFactory).doGetBean(String, Class<T>, Object[], boolean) line: 288
DefaultListableBeanFactory(AbstractBeanFactory).getBean(String) line: 190
DefaultListableBeanFactory.preInstantiateSingletons() line: 574
XmlWebApplicationContext(AbstractApplicationContext).finishBeanFactoryInitialization(ConfigurableListableBeanFactory) line: 895
XmlWebApplicationContext(AbstractApplicationContext).refresh() line: 425
ContextLoaderListener(ContextLoader).createWebApplicationContext(ServletContext, ApplicationContext) line: 276
ContextLoaderListener(ContextLoader).initWebApplicationContext(ServletContext) line: 197
ContextLoaderListener.contextInitialized(ServletContextEvent) line: 47
JettyWebAppContext(ContextHandler).startContext() line: 645
JettyWebAppContext(ServletContextHandler).startContext() line: 200
JettyWebAppContext(WebAppContext).startContext() line: 995
JettyWebAppContext(ContextHandler).doStart() line: 588
JettyWebAppContext(WebAppContext).doStart() line: 381
JettyWebAppContext.doStart() line: 114
JettyWebAppContext(AbstractLifeCycle).start() line: 55
ContextHandlerCollection(HandlerCollection).doStart() line: 165
ContextHandlerCollection.doStart() line: 162
ContextHandlerCollection(AbstractLifeCycle).start() line: 55
HandlerCollection.doStart() line: 165
HandlerCollection(AbstractLifeCycle).start() line: 55
JettyServer(HandlerWrapper).doStart() line: 92
JettyServer(Server).doStart() line: 228
JettyServer.doStart() line: 67
Stack trace 2:
Segmenter.initialize() line: 63
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object...) line: 597
InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(Object) line: 340
InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(Object, String) line: 293
CommonAnnotationBeanPostProcessor(InitDestroyAnnotationBeanPostProcessor).postProcessBeforeInitialization(Object, String) line: 130
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).applyBeanPostProcessorsBeforeInitialization(Object, String) line: 394
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).initializeBean(String, Object, RootBeanDefinition) line: 1405
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).doCreateBean(String, RootBeanDefinition, Object[]) line: 519
DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).createBean(String, RootBeanDefinition, Object[]) line: 456
AbstractBeanFactory$1.getObject() line: 291
DefaultListableBeanFactory(DefaultSingletonBeanRegistry).getSingleton(String, ObjectFactory) line: 222
DefaultListableBeanFactory(AbstractBeanFactory).doGetBean(String, Class<T>, Object[], boolean) line: 288
DefaultListableBeanFactory(AbstractBeanFactory).getBean(String) line: 190
DefaultListableBeanFactory.preInstantiateSingletons() line: 574
XmlWebApplicationContext(AbstractApplicationContext).finishBeanFactoryInitialization(ConfigurableListableBeanFactory) line: 895
XmlWebApplicationContext(AbstractApplicationContext).refresh() line: 425
DispatcherServlet(FrameworkServlet).createWebApplicationContext(ApplicationContext) line: 442
DispatcherServlet(FrameworkServlet).createWebApplicationContext(WebApplicationContext) line: 458
DispatcherServlet(FrameworkServlet).initWebApplicationContext() line: 339
DispatcherServlet(FrameworkServlet).initServletBean() line: 306
DispatcherServlet(HttpServletBean).init() line: 127
DispatcherServlet(GenericServlet).init(ServletConfig) line: 241
ServletHolder.initServlet() line: 421
ServletHolder.doStart() line: 245
ServletHolder(AbstractLifeCycle).start() line: 55
ServletHandler(ServletHandler).initialize() line: 691
JettyWebAppContext(ServletContextHandler).startContext() line: 204
JettyWebAppContext(WebAppContext).startContext() line: 995
JettyWebAppContext(ContextHandler).doStart() line: 588
JettyWebAppContext(WebAppContext).doStart() line: 381
JettyWebAppContext.doStart() line: 114
JettyWebAppContext(AbstractLifeCycle).start() line: 55
ContextHandlerCollection(HandlerCollection).doStart() line: 165
ContextHandlerCollection.doStart() line: 162
ContextHandlerCollection(AbstractLifeCycle).start() line: 55
HandlerCollection.doStart() line: 165
HandlerCollection(AbstractLifeCycle).start() line: 55
JettyServer(HandlerWrapper).doStart() line: 92
JettyServer(Server).doStart() line: 228
JettyServer.doStart() line: 67
Actally, you have two Spring application contexts:
ContextLoaderListener from the XML files specified by context-param named contextConfigLocation (or applicationContext.xml by default). DispatcherServlet from the XML files specified by the dispatcher servlet's init-param named contextConfigLocation (or <servletname>-servlet.xml by default). The former is a parent context of the latter.
So, you somehow got a definitions of the same bean in both contexts (perhaps, both contextConfigLocation s point to the same XML files).