Error creating bean with name 'bannerController': Unsatisfied dependency expressed through field 'bannerService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'bannerService': Unsatisfied dependency expressed through field 'bannerMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'bannerMapper' defined in file [D:\Mammalia\springboot\springboot106\target\classes\com\whale\springboot106\mapper\BannerMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [D:\Mammalia\springboot\springboot106\target\classes\mapper\SpeciesMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [D:\Mammalia\springboot\springboot106\target\classes\mapper\SpeciesMapper.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.neutech.mammalia.Entity.Species'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.neutech.mammalia.Entity.Species at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostPr

这是一个比较复杂的错误，看起来是在Spring Boot应用程序启动时出现的。它的根本原因是依赖注入失败，导致无法创建一个名为'bannerController'的bean。在这个bean中，'bannerService'这个属性的依赖注入也失败了，从而导致了'bannerMapper'中的依赖注入失败。在'bannerMapper'中，由于无法创建'sqlSessionFactory' bean，导致出现了错误。

这个错误的具体原因可能有很多，但是从错误信息中可以看出，可能是由于缺少某些类或文件，或者配置文件中出现了错误。您需要检查您的代码和配置文件，找到导致这个错误的原因，并进行相应的修复。