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

Posted 2021-02-10 话·醉月

• 背景：学习Spring，在使用注解@Bean的name属性配置<bean>实例时，不能注册实例成功
• 报错

  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)

• 报错原因：Bean注解的value或者name值问题 在一个容器中存在的相同或者大小写相同的情况。类Configure装配到Bean容器中的默认id为configure，@Bean注解的name值与之存在冲突

  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();
      }
  }

• 解决方法：将注解@Bean的name属性值中的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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