Spring异常：NoSuchBeanDefinitionException: No qualifying bean of type ‘it.com.dao.AccountDao‘ available

1、在测试Spring整合Mybatis，进行Junit测试时，遇到了以下报错

java.lang.IllegalStateException: Failed to load ApplicationContextat org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132)at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:123)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'accountServiceImpl': Unsatisfied dependency expressed through field 'accountDao'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'it.com.dao.AccountDao' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643)at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'it.com.dao.AccountDao' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1717)at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1273)at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)... 42 more

2、主要报错内容为

（1）java.lang.IllegalStateException: Failed to load ApplicationContext --> 没有加载到ApplicationContext相应的配置文件

（2）UnsatisfiedDependencyException: Error creating bean with name 'accountServiceImpl': Unsatisfied dependency expressed through field 'accountDao'; --> 创建名为“accountServiceImpl”的bean时出错，无法依赖bean：accountDao

（3）NoSuchBeanDefinitionException: No qualifying bean of type 'it.com.dao.AccountDao' available: expected at least 1 bean which qualifies as autowire candidate. --> 没有找到符合类型的bean：AccountDao

3、因为做得是Spring整合Mybatis，由异常报错 NoSuchBeanDefinitionException: No qualifying bean of type 'it.com.dao.AccountDao' available 可知没有加载到dao包下的文件，遂到Mybatis配置类 MybatisConfig 中查看，发现是Mapper映射文件扫描包路径写错

将路径修改为” it.com.dao “ 后，运行代码，运行正常，结果正常显示

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Spring异常：NoSuchBeanDefinitionException: No qualifying bean of type ‘it.com.dao.AccountDao‘ available

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