SpringBoot整合MybatisPlus啟動時報錯： org.springframework.beans.factory.UnsatisfiedDependencyException

SpringBoot整合MybatisPlus在啟動時直接報錯

報錯重點資訊如下：

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.jia.vueblog.mapper.BlogMapper' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
           

可能造成報錯的問題：

• XXMapper.java 中未添加@Mapper注解或者Application主啟動類中未添加@MapperScan("")注解。
• 注解配置不完整，如Service實作類沒有加@Service，Spring boot無法掃描等。
• application.yml / application.properties中mapper-locations配置内容有誤

• @MapperScan("")注解中包路徑寫錯

  檢查發現是@MapperScan("")注解中包路徑寫錯導緻問題發生。