异常信息：

org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'BusinessAccountController' for bean class [com.hs.BusinessAccountController] conflicts with existing, non-compatible bean definition of same name and class [com.hs.BusinessAccountController]
    at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.checkCandidate(ClassPathBeanDefinitionScanner.java:314)
    at org.mybatis.spring.mapper.ClassPathMapperScanner.checkCandidate(ClassPathMapperScanner.java:223)
    at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:253)
    at org.mybatis.spring.mapper.ClassPathMapperScanner.doScan(ClassPathMapperScanner.java:155)
    at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.scan(ClassPathBeanDefinitionScanner.java:220)

问题的根源是出现bean名称重复

原因：

1.两个bean名称重复，spring扫描无法创建bean对象（有时候会与引入的第三方的jar包中的bean名称重复）；

2.target中有缓存导致，Maven项目clean下再编译