not able to inject DAO in spring bean

Question

In spring 3.o, I am trying to inject my DAO layer object to my singleTon bean using :

ApplicationContext applicaionContext = new ClassPathXmlApplicationContext(ApplicationConstants.APP_PROPERTY_CONFIG_PATH);

        TemplateManagementDAO  templateManagementDAO =(TemplateManagementDAO) applicaionContext.getBean("templateManagementDAO");

But it gives the exception :

java.lang.NoClassDefFoundError: org.springframework.beans.FatalBeanException
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:581)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:983)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:879)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
    at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4655)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:5364)
    at com.sun.enterprise.web.WebModule.start(WebModule.java:345)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:986)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:970)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:704)
    at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1649)
    at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1254)
    at com.sun.enterprise.server.WebModuleDeployEventListener.moduleDeployed(WebModuleDeployEventListener.java:182)
    at com.sun.enterprise.server.WebModuleDeployEventListener.moduleDeployed(WebModuleDeployEventListener.java:278)
    at com.sun.enterprise.admin.event.AdminEventMulticaster.invokeModuleDeployEventListener(AdminEventMulticaster.java:1005)
    at com.sun.enterprise.admin.event.AdminEventMulticaster.handleModuleDeployEvent(AdminEventMulticaster.java:992)
    at com.sun.enterprise.admin.event.AdminEventMulticaster.processEvent(AdminEventMulticaster.java:470)
    at com.sun.enterprise.admin.event.AdminEventMulticaster.multicastEvent(AdminEventMulticaster.java:182)
    at com.sun.enterprise.admin.server.core.DeploymentNotificationHelper.multicastEvent(DeploymentNotificationHelper.java:308)
    at com.sun.enterprise.deployment.phasing.DeploymentServiceUtils.multicastEvent(DeploymentServiceUtils.java:231)
    at com.sun.enterprise.deployment.phasing.ServerDeploymentTarget.sendStartEvent(ServerDeploymentTarget.java:298)
    at com.sun.enterprise.deployment.phasing.ApplicationStartPhase.runPhase(ApplicationStartPhase.java:132)
    at com.sun.enterprise.deployment.phasing.DeploymentPhase.executePhase(DeploymentPhase.java:108)
    at com.sun.enterprise.deployment.phasing.PEDeploymentService.executePhases(PEDeploymentService.java:966)
    at com.sun.enterprise.deployment.phasing.PEDeploymentService.start(PEDeploymentService.java:609)
    at com.sun.enterprise.deployment.phasing.PEDeploymentService.start(PEDeploymentService.java:653)
    at com.sun.enterprise.admin.mbeans.ApplicationsConfigMBean.start(ApplicationsConfigMBean.java:773)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.sun.enterprise.admin.MBeanHelper.invokeOperationInBean(MBeanHelper.java:390)
    at com.sun.enterprise.admin.MBeanHelper.invokeOperationInBean(MBeanHelper.java:373)
    at com.sun.enterprise.admin.config.BaseConfigMBean.invoke(BaseConfigMBean.java:477)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836)
    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761)
    at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.sun.enterprise.admin.util.proxy.ProxyClass.invoke(ProxyClass.java:90)
    at $Proxy1.invoke(Unknown Source)
    at com.sun.enterprise.admin.server.core.jmx.SunoneInterceptor.invoke(SunoneInterceptor.java:304)
    at com.sun.enterprise.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:170)
    at com.sun.enterprise.admin.jmx.remote.server.callers.InvokeCaller.call(InvokeCaller.java:69)
    at com.sun.enterprise.admin.jmx.remote.server.MBeanServerRequestHandler.handle(MBeanServerRequestHandler.java:155)
    at com.sun.enterprise.admin.jmx.remote.server.servlet.RemoteJmxConnectorServlet.processRequest(RemoteJmxConnectorServlet.java:122)
    at com.sun.enterprise.admin.jmx.remote.server.servlet.RemoteJmxConnectorServlet.doPost(RemoteJmxConnectorServlet.java:193)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
    at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:315)
    at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:287)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:218)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
    at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1093)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1093)
    at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:291)
    at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:666)
    at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:597)
    at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:872)
    at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
    at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
    at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
    at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:264)
    at com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run(WorkerThreadImpl.java:117)

Can anyone suggest me why is is not able to acces DAO object into the bean layer ?? Thanks, Gunjan Shah.

Answer 1

In your application-context.xml define:

<bean id="templateManagementDAO" class="yourPackage.TemplateManagementDAO" />

Note TemplateManagementDAO should the be the implementation class not the interface.

Answer 2

You need to fix this exception first

java.lang.NoClassDefFoundError: org.springframework.beans.FatalBeanException

which is nothing to do with any Spring config errors. Do you have an old version of Spring on the classpath?

Answer 3

在Spring Context配置文件中，如果您已激活包扫描以基于注释（）发现Bean，则也可以使用@Repository注释DAO类。

Answer 4

I had the same exception. It gives not much information. By doing a lot of debugging I found out I was getting a stack overflow exception when instantiating a bean. It was given by and endless recursive call between 2 factory methods annotated with @Bean.

This is the stack trace before it dies, maybe it was happening the same to you and the @Lazy annotation helped to avoid this...

"main" prio=10 tid=0x09151000 nid=0x4c10 runnable [0xf733b000]
   java.lang.Thread.State: RUNNABLE
        at com.cme.datamine.elephant.config.ElephantConfig.fileRouters(ElephantConfig.java:276)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7.CGLIB$fileRouters$14(<generated>)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7$$FastClassByCGLIB$$1e5bbc2f.invoke(<generated>)
        at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:215)
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:280)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7.fileRouters(<generated>)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:149)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:570)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1015)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
        - locked <0xe04f0fb8> (a java.util.concurrent.ConcurrentHashMap)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:292)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7.fileRouters(<generated>)
        at com.cme.datamine.elephant.config.ElephantConfig.faultToleranceArbiter(ElephantConfig.java:302)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7.CGLIB$faultToleranceArbiter$15(<generated>)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7$$FastClassByCGLIB$$1e5bbc2f.invoke(<generated>)
        at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:215)
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:280)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7.faultToleranceArbiter(<generated>)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:149)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:570)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1015)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
        - locked <0xe04f0fb8> (a java.util.concurrent.ConcurrentHashMap)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:292)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7.faultToleranceArbiter(<generated>)
        at com.cme.datamine.elephant.config.ElephantConfig.fileRouters(ElephantConfig.java:292)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7.CGLIB$fileRouters$14(<generated>)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7$$FastClassByCGLIB$$1e5bbc2f.invoke(<generated>)
        at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:215)
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:280)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7.fileRouters(<generated>)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:149)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:570)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1015)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
        - locked <0xe04f0fb8> (a java.util.concurrent.ConcurrentHashMap)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:292)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7.fileRouters(<generated>)
        at com.cme.datamine.elephant.config.ElephantConfig.writersRunners(ElephantConfig.java:256)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7.CGLIB$writersRunners$13(<generated>)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7$$FastClassByCGLIB$$1e5bbc2f.invoke(<generated>)
        at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:215)
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:280)
        at com.cme.datamine.elephant.config.ElephantConfig$$EnhancerByCGLIB$$b38541f7.writersRunners(<generated>)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:149)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:570)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1015)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
        - locked <0xe04f0fb8> (a java.util.concurrent.ConcurrentHashMap)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:848)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:790)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:707)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478)
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
        - locked <0xe04f0fb8> (a java.util.concurrent.ConcurrentHashMap)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:848)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:790)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:707)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478)
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
        - locked <0xe04f0fb8> (a java.util.concurrent.ConcurrentHashMap)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
        - locked <0xe04f1df0> (a java.util.concurrent.ConcurrentHashMap)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
        - locked <0xe04f1eb0> (a java.lang.Object)
        at com.cme.datamine.elephant.launch.Launcher.createSpringContext(Launcher.java:109)
        at com.cme.datamine.elephant.launch.Launcher.main(Launcher.java:55)

Answer 5

The problem was generated because my application intializer class trying the access the DAOs before its get loaded by the container.

So after using lazy-init = true option it works fine.

  <!-- LAZY LOAD THIS BEAN TO RESOLVE DAO INJECTION PROBLEM INTO THE BEAN -->
    <bean id="selStartUpDataInitializer" class="com.eks.sel.service.SELStartUpDataInitializer"
        factory-method="getInstance" lazy-init="true">
    </bean>

For your further reference, And here is the class where I have used DAOs from where the exception getting generated..

public class SELStartUpDataInitializer  implements Cloneable{

    private static SELStartUpDataInitializer selStartUpDataInitializer;
    private static final Logger LOGGER =Logger.getLogger(SELStartUpDataInitializer.class);
    private static Map<String,Object> staticContextMap = new HashMap<String, Object>(); 


    //PRIVATE CONSTRUCTOR : FOR SINGLE TON
    private SELStartUpDataInitializer(){                
        initializeTempalteDataFieldMap();
    }

    //OVERRIDE CLONNABLE METHOD
    @Override
    protected Object clone() throws CloneNotSupportedException {
        if(selStartUpDataInitializer==null){
            selStartUpDataInitializer = new SELStartUpDataInitializer();
        }
        return selStartUpDataInitializer;
    }


    //GET INSTANCE : USED BY BEAN TO INITIALIZE THE BEAN 
    public static synchronized SELStartUpDataInitializer getInstance(){
        if(selStartUpDataInitializer==null){
            selStartUpDataInitializer = new SELStartUpDataInitializer();
        }
        return selStartUpDataInitializer;
    }   



    //INITIALIZE TEMPALTE DATA FILEDs : CALLED BY ONE TIME CONSTRUCTOR
    public  void initializeTempalteDataFieldMap(){      
        LOGGER.info("SELStartUPDataInitializer ... Initializing all temaplte data mapping fields ....");
        Map<Integer, Map<String,String>> templateDatafieldMap = new HashMap<Integer, Map<String,String>>();
        LOGGER.info("Loading application contex from the class path : STARTED");
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext(ApplicationConstants.APP_RELOAD_PROPERTY_CONFIG_PATH);
        LOGGER.info("Loading application contex from the class path : COMPLETED");
        //ITS MANDATORY TO CAST BY INTERFACE. OTHERWISE $PROXY ERROR WILL BE GENERATED
        ITemplateManagementDAO  templateManagementDAO =(ITemplateManagementDAO) applicationContext.getBean("templateManagementDAO");                

        List<Template> templates = templateManagementDAO.findByStatus(1);
        LOGGER.info("initializeDataFields, number of templates = "+templates.size());

        for (Template template : templates) {
            String base64TffFile = ApplicationConstants.BASE64_PREFIX + 
                            new String(Base64.encodeBase64(template.getTemplateFile().getBytes()));

            LOGGER.info("initializeDataFields, initializing templateId = "+template.getTemplateid()+".");
            templateDatafieldMap.put(template.getTemplateid(), SELUtil.getDatafieldNames(base64TffFile));
            LOGGER.info("initializeDataFields, templateId = "+template.getTemplateid()+" initialized.");
        }

        IDynamicAttributeDAO dynamicAttributeDAO =(IDynamicAttributeDAO) applicationContext.getBean("dynamicAttributeDAO");

        staticContextMap.put(ApplicationConstants.TEMPLATE_DATAFIELD_MAP, templateDatafieldMap);
        staticContextMap.put(ApplicationConstants.ECC5_SAPTODATAFIELD_MAP,dynamicAttributeDAO.getAllSAPtoDataFieldAttribsMap(SAPConstants.SAP_ECC5));
        staticContextMap.put(ApplicationConstants.ECC6_SAPTODATAFIELD_MAP,dynamicAttributeDAO.getAllSAPtoDataFieldAttribsMap(SAPConstants.SAP_ECC6));
        staticContextMap.put(ApplicationConstants.ALL_DYNAMICATTRIBS_MAP,dynamicAttributeDAO.getAllDynamicAttributesMap());

    }


    public  Map<String, Object> getStaticContextMap() {
        return staticContextMap;
    }



}

In above class, I was trying the reload / rescan the beans using ClassPathXMLApplicationContext. So here the exception was generated while using DAOs.

It was trying the retrieve the DAOs before the configuration is totally scanned and all the beans are intialized.