出现错误ERROR [localhost-startStop-1] - Context initialization failed

ERROR [localhost-startStop-1] - Context initialization failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'customerController': Unsatisfied dependency expressed through field 'customerService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.service.CustomerService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

原因：applicationContext里面的配置文件中扫描服务类或者mapper类时出错，找不到，注意服务的实现类和mapper类的包名不要写错就行

<context:component-scan base-package="com.serviceImpl"></context:component-scan>
<!-- Mapper代理开发(基于MapperScannerConfigurer) -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
	<property name="basePackage" value="com.mapper"></property>
</bean>