Consider defining a bean of type 'com.mrti.shop.service.ITeacherService' in your configuration.

To define a bean of type 'com.mrti.shop.service.ITeacherService' in your configuration, you can follow these steps:

1. Open your configuration file, typically named 'applicationContext.xml' or 'application.yml'.

2. Locate the section where beans are defined. This could be under the `<beans>` tag in an XML configuration file or under the `spring:` section in a YAML configuration file.

3. Add the following code snippet to define the bean:

   <bean id="teacherService" class="com.mrti.shop.service.TeacherServiceImpl">
       <!-- Additional properties or dependencies can be defined here -->
   </bean>

Note that `com.mrti.shop.service.TeacherServiceImpl` should be replaced with the actual implementation class of `ITeacherService` interface.

4. Save the configuration file.

By doing this, you have defined a bean of type 'com.mrti.shop.service.ITeacherService' with the id 'teacherService' in your configuration.