Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException:

这个错误通常是由于在Spring程序中创建bean时出现问题导致的。具体来说，错误信息中的"Bean instantiation via factory method failed"表示通过工厂方法创建bean时出现了问题，而"nested exception is org.springframework.beans.BeanInstantiationException"表示bean实例化时抛出了异常。这个异常可能是由于StackOverflowError引起的，这是一个递归调用导致的错误。[1]

另外，还有一个相关的错误是NullPointerException，也就是空指针异常。这个错误通常发生在构造函数中使用@Autowired注解去注入一个bean的服务时，如果注入的服务为null，就会抛出这个异常。[3]

综上所述，出现"Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException"的错误可能是由于工厂方法创建bean时出现了递归调用导致的StackOverflowError，或者是在构造函数中注入的服务为null导致的NullPointerException。要解决这个问题，可以检查工厂方法的实现是否存在递归调用，或者检查构造函数中注入的服务是否正确初始化。

相关问题

Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException

回答: 当出现"Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException"的错误时，通常是由于在创建bean时发生了异常。这个异常可能是由于构造函数抛出了异常，或者在构造函数中使用了@Autowired注解去注入一个服务时出现了空指针异常。\[1\]\[3\]在你提供的引用中，报错信息中提到了"StackOverflowError"，这通常是由于递归调用导致的无限循环。可能是在创建bean时，构造函数或其他方法中发生了递归调用，导致栈溢出。要解决这个问题，你可以检查构造函数或其他方法中是否存在递归调用，并确保避免出现无限循环的情况。
#### 引用[.reference_title]
- *1* *2* [Spring报错Bean instantiation via factory method failed StackOverflowError](https://blog.csdn.net/woshisangsang/article/details/104107969)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [Instantiation of bean failed；nested exception is org.springframework.beans.BeanInstantiationExcept:](https://blog.csdn.net/qq_42783654/article/details/108622930)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
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WARN o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'accountController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dtoMapper': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'demandResponseEventMapper': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'demandResponseEventService': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'demandResponseEventPublisher': Unsatisfied dependency expressed through field 'jmsTemplate'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'l' defined in class path resource [com/avob/openadr/server/common/vtn/VtnConfigRabbitmqBroker.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.jms.core.JmsTemplate]: Factory method 'externalJmsTemplate' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'externalConnectionFactory' defined in class path resource [com/avob/openadr/server/common/vtn/VtnConfigRabbitmqBroker.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.jms.ConnectionFactory]: Factory method 'externalConnectionFactory' threw exception; nested exception is java.lang.NoClassDefFoundError: com/rabbitmq/jms/admin/RMQConnectionFactory

根据你提供的信息，看起来是一个Spring Boot项目的启动问题。具体来说，`accountController`这个bean初始化失败，因为它依赖于`demandResponseEventPublisher`这个bean，而`demandResponseEventPublisher`又依赖于`jmsTemplate`这个bean。进一步分析，发现`jmsTemplate`依赖于`externalConnectionFactory`这个bean，而`externalConnectionFactory`初始化失败，因为它依赖于`com.rabbitmq.jms.admin.RMQConnectionFactory`这个类，但这个类找不到。这可能是由于缺少相关的依赖或版本不兼容等问题引起的。您可以检查项目的依赖是否正确，以及相关依赖的版本是否与您使用的Spring版本兼容。