SpingMVC启动出现注解注入失败情况之一

SpingMVC启动出现注入失败情况之一

SPRingmvc启动抛出异常:

 WARN | Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'queueReceiver1': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.lei.activemq.springmq.producer.queue.QueueSender com.lei.activemq.springmq.QueueReceiver1.queueSender; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.lei.activemq.springmq.producer.queue.QueueSender] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}ERROR | Context initialization failedorg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'queueReceiver1': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.lei.activemq.springmq.producer.queue.QueueSender com.lei.activemq.springmq.QueueReceiver1.queueSender; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.lei.activemq.springmq.producer.queue.QueueSender] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1208)	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)	at org.springframework.context.support.AbstractapplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:762)	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4853)	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5314)	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)	at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1696)	at sun.reflect.GeneratedMethodaccessor116.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)	at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:484)	at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:433)	at sun.reflect.GeneratedMethodAccessor114.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)	at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)	at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)	at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309)	at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1401)	at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)	at sun.reflect.GeneratedMethodAccessor75.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:324)	at sun.rmi.transport.Transport$1.run(Transport.java:200)	at sun.rmi.transport.Transport$1.run(Transport.java:197)	at java.security.AccessController.doPrivileged(Native Method)	at sun.rmi.transport.Transport.serviceCall(Transport.java:196)	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:683)	at java.security.AccessController.doPrivileged(Native Method)	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.lei.activemq.springmq.producer.queue.QueueSender com.lei.activemq.springmq.QueueReceiver1.queueSender; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.lei.activemq.springmq.producer.queue.QueueSender] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)	... 55 moreCaused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.lei.activemq.springmq.producer.queue.QueueSender] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1301)	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1047)	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)	... 57 more我这次遇到这个问题原因出现在:
spring在实例化对象的时候会先实例化xml配置文件里面配置的<bean></bean>,然后才会去实例化添加注解的java类,也就是说Spring先读xml再读注解.如果在xml文件里面实例化的类内有用注解注入了另外一个用注解@Component实例化的类就会抛出如上异常.
如出现此异常的情况还有:
1.包扫面错误:
<context:component-scan base-package="com.lei"/>
2.注解注入的类自己在调用自己;
3.注入的类没有添加注入注解;
等等等等.....很多种情况,只是我这次遇到的情况比较特殊.