【问题】org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘roleController’: Unsatisfied dependency expressed through field ‘roleService’;xxxxxxx…
这类错误可以首先检查mapper.xml是否有错，因为是映射错误造成的，spring找不到创建的类（bean）