***************************APPLICATION FAILED TO START***************************Description:

错误详情
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APPLICATION FAILED TO START
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Description:

Field classInfoMapper in cu.fish.curriculum.fly.info.service.impl.ClassInfoServiceImpl required a bean of type 'cu.fish.curriculum.fly.info.mapper.ClassInfoMapper' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)

Action:

Consider defining a bean of type 'cu.fish.curriculum.fly.info.mapper.ClassInfoMapper' in your configuration.

Process finished with exit code 1

 问题原因：

   未配置 MyBatis 的 Mapper 接口扫描路径

解决思路：

第一种：启动类上加扫描包

// 文件路径: cu/fish/curriculum/CurriculumApplication.java
@SpringBootApplication
@MapperScan("cu.fish.curriculum.fly.info.mapper")  // 指定 Mapper 接口包路径
public class CurriculumApplication {
    public static void main(String[] args) {
        SpringApplication.run(CurriculumApplication.class, args);
    }
}

 第二种：mapper接口上加mapper

// 文件路径: cu/fish/curriculum/fly/info/mapper/ClassInfoMapper.java @Mapper // 关键注解 public interface ClassInfoMapper { // 接口方法... }