【SPRINGMVC】Error creating bean with name 'projectController': Injection of autowired dependencies

古城微笑少年丶 2022-06-14 10:11 288阅读 0赞

错误代码：

  1. [2017-06-17 11:08:33] org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:351) 
  2. <ERROR> Context initialization failed
  4. org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'projectController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.hcepms.proj.project.service.ProjectServiceIntf com.hcepms.proj.project.controller.ProjectController.projectService; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [com.hcepms.proj.project.service.ProjectServiceIntf] is defined: expected single matching bean but found 2: projectMemberDispatchServiceImpl,projectServiceImpl
  5.     at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
  6.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
  7.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551)
  8.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
  9.     at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
  10.     at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
  11.     at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
  12.     at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
  13.     at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:778)
  14.     at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:843)
  15.     at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
  16.     at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444)
  17.     at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326)
  18.     at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
  19.     at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4738)
  20.     at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5181)
  21.     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
  22.     at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)
  23.     at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)
  24.     at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
  25.     at java.util.concurrent.FutureTask.run(Unknown Source)
  26.     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
  27.     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
  28.     at java.lang.Thread.run(Unknown Source)
  29. Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.hcepms.proj.project.service.ProjectServiceIntf com.hcepms.proj.project.controller.ProjectController.projectService; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [com.hcepms.proj.project.service.ProjectServiceIntf] is defined: expected single matching bean but found 2: projectMemberDispatchServiceImpl,projectServiceImpl
  30.     at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573)
  31.     at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
  32.     at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
  33.     ... 23 more
  34. Caused by: org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [com.hcepms.proj.project.service.ProjectServiceIntf] is defined: expected single matching bean but found 2: projectMemberDispatchServiceImpl,projectServiceImpl
  35.     at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1133)
  36.     at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1021)
  37.     at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)
  38.     ... 25 more

出现原因

代码本身没有做修改，我做了以下两个操作

  1. 将原来的包结构改变，去掉了一层中间包
  2. 将原有的controller、bean、service、impl复制了一套准备新模块的开发

于是出现了上述问题。

分析原因，我发现是由于ProjectService注入的时候发生的，于是全局搜索，我发现有两个地方均实现了ProjectService。

一个是我原有的实现类，一个是我复制过来的实现类。

解决办法

将复制过来的实现类，里面实现的service，改为新创建的service，clean工程，解决问题。

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