不能夠注入DAO春豆

春天3.O，我想用我的DAO層對象注入到我的單身豆：不能夠注入DAO春豆

ApplicationContext applicaionContext = new ClassPathXmlApplicationContext(ApplicationConstants.APP_PROPERTY_CONFIG_PATH); 

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

但它給了異常：

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)

任何人都可以建議我爲什麼不能將DAO對象訪問到bean層？謝謝， Gunjan Shah。

來源

2012-04-26 Gunjan Shah

順便說一句，你在做什麼不是注射。你正在尋找一些東西，這就是所謂的「服務定位器」模式，而不是Spring的標準模式操作，它被稱爲「依賴注入」或「控制反轉」。 – 2012-04-26 13:08:05

你很可能在你的類路徑中缺少彈簧罐。再次看看你的異常：'NoClassDefFoundError：org.springframework.beans.FatalBeanException' – pap 2012-04-26 14:27:02

在你application-context.xml定義：

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

注TemplateManagementDAO應該是實現類不是接口。

來源

2012-04-26 13:05:06 Bitmap

我已經使用了相同的syntex ..但注入時我將templateManagementDAO作爲null。它在我使用lazy-init =「true」選項時工作。 – 2012-04-30 06:12:11

我只能認爲你的設計造成了這種情況。如果您構建bean一次並訪問多個，那麼潛在的未來訪問將無法獲得bean的內存引用，因此您必須使用lazy-init來強制Spring IOC僅在請求時加載該bean。同樣，它看起來好像你上面的代碼片段並不是構建你的bean所需要的。在某些情況下可能會導致NPE。 – Bitmap 2012-04-30 08:21:37

讓我給你更深的設計..我使用了三個包服務，dao和beans。我使用組件掃描服務和dao圖層：掃描syntex。現在在服務層中有一個從DAO層注入一個dao的bean。服務層中的所有類都使用@ service進行註釋，DAO層中的所有DAO都使用@Repository註釋進行註釋。 – 2012-05-02 04:45:07

你需要解決這個例外第一

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

這是無關的任何Spring配置錯誤。你在類路徑中是否有舊版本的Spring？

來源

2012-04-26 13:12:56 artbristol

我已經使用org.springframework.bean - 3.0.5-RELEASE.jar文件 – 2012-04-30 06:10:18

是的，但還有其他春天的瓶子掛在身邊嗎？ – artbristol 2012-04-30 07:26:57

是的......剩下的所有jar都與spring 3有關。但是它在我聲明的bean聲明中設置lazy-init = true時有效 – 2012-05-02 04:39:07

在你的Spring Context配置文件中，如果你已經激活了包掃描以發現基於annotations（）的bean，那麼你也可以用@Repository註釋你的DAO類。

來源

2012-04-26 13:17:32 kyiu

DAO已經使用@Repository註釋進行了註釋。它仍然給出相同的錯誤 – 2012-04-30 05:41:05

鑑於您遇到的錯誤類型，也許您可以嘗試在調試模式下運行應用程序，並在Spring嘗試實例化缺少的類時設置斷點。然後，它將找出哪個類定義丟失，並以相同的方式，你會看到你丟失了哪個罐子 – kyiu 2012-04-30 07:56:12

我有同樣的例外。它沒有提供太多的信息。通過大量的調試，我發現在實例化一個bean時，我得到了一個堆棧溢出異常。它是由@Bean註釋的2個工廠方法之間的無盡的遞歸調用給出的。

這是堆棧跟蹤它死之前，也許它發生同樣的你和@Lazy註解有助於避免這個...

"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)

來源

2013-02-15 14:16:51 Facundo

感謝Facundo的回覆。問題在於bcoz控制器在完全掃描之前訪問DAO。它在設置lazy-init = true選項後工作正常。 – 2013-02-21 16:34:45

中產生的問題，因爲我的應用程序初始化器類的嘗試在DAO被容器加載之前訪問DAO。

所以在使用lazy-init = true選項後，它可以正常工作。

<!-- 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>

爲您進一步的參考，而這裏是我從如何產生異常的地方使用的DAO類..

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; 
    } 



}

在上面的類，我試圖重新加載/重新掃描豆使用ClassPathXMLApplicationContext。所以這裏使用DAO時產生了異常。

它正在嘗試檢索DAO，然後才能完全掃描配置，並且所有bean都已初始化。

來源

2013-02-21 16:46:05

不能夠注入DAO春豆

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