Spring錯誤——Spring 注解——factory-bean reference points back to the same bean definition

• 背景：學習Spring，在使用注解@Bean的name屬性配置<bean>實例時，不能注冊實例成功
• 報錯

  WARNING: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: 
           Invalid bean definition with name 'configure' defined in com.jing.spring.annotation.Configure: factory-bean reference points back to the same bean definition
  org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'configure' defined in com.jing.spring.annotation.Configure: factory-bean reference points back to the same bean definition
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:673)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:638)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:607)
      at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1486)
      at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1009)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:741)
      at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
      at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
      at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
      at com.jing.spring.ioc.UnitTestBase.before(UnitTestBase.java:33)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

• 報錯原因：Bean注解的value或者name值問題 在一個容器中存在的相同或者大小寫相同的情況。類Configure裝配到Bean容器中的默認id為configure，@Bean注解的name值與之存在沖突

  package com.jing.spring.annotation;
  
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.Configuration;
  
  @Configuration
  public class Configure {
  
      @Bean(name = {"configure","configure1"})
      public BeanConfigureI beanCon(){
          return new BeanConfigureImpl();
      }
  }

• 解決方法：將注解@Bean的name屬性值中的configura修改一下即可

  package com.jing.spring.annotation;
  
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.Configuration;
  
  @Configuration
  public class Configure {
  
      @Bean(name = {"configure2","configure1"})
      public BeanConfigureI beanCon(){
          return new BeanConfigureImpl();
      }
  }

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