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\BannerMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 10; columnNumber: 1; 文件提前结束。 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostP

这个错误信息看起来比较复杂，但是大致意思是在创建BannerController时，BannerService的依赖注入出现了问题，由此引发了一系列的依赖注入问题。其中，最根本的原因是MyBatis在解析Mapper XML时出现了错误，导致SqlSessionFactory无法创建。

建议你检查一下BannerMapper.xml文件中是否存在语法错误或者格式问题。特别是注意文件开头是否有正确的声明，以及每一个标签和属性是否符合规范。同时，检查一下SqlSessionFactory的配置是否正确，包括数据源、Mapper扫描路径等等。

如果你无法找到具体的错误，可以尝试在日志中寻找更详细的信息，或者查看相关的技术文档和社区，寻求帮助。