不知为什么不能访问首页，出错信息如下：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘courseController’: Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.online.college.portal.business.ICourseBusiness com.online.college.portal.controller.CourseController.courseBusiness; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.online.college.portal.business.ICourseBusiness] 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:1204)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725)atorg.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)atorg.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)atorg.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)atorg.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)atorg.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)atorg.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4792)atorg.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5256)atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)atorg.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1421)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1411)atjava.util.concurrent.FutureTask.run(FutureTask.java:266)atjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)atjava.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.online.college.portal.business.ICourseBusiness com.online.college.portal.controller.CourseController.courseBusiness; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.online.college.portal.business.ICourseBusiness] 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:555)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
谢谢老师帮忙解决