idea出现The injection point has the following annotations: - @org.springframework.beans.factory...

小鱼儿 2022-12-29 00:21 42阅读 0赞

*   
 *  出现下方错误请查看启动类：XXXApplication 是否扫描到mapper映射文件，声明eclipse和idea不一样，这里eclipse可以跑通，idea中不行

***************************
            APPLICATION FAILED TO START
            ***************************
    
            Description:
    
            Field chapterDao in cn.yixue.service.ChapterServiceImp required a bean of type 'cn.yixue.dao.ChapterMapper' 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 'cn.yixue.dao.ChapterMapper' in your configuration.
    
    
            以上提取出有用的信息：required a bean of type 'xxxx' that could not be found.
            
            代表bean没注入，从bean注入寻找方向，有的人会说我用@Autowired之类的种种，但没扫到，好吧~

解决方法：

1.  在相应的mapper类中加@Mapper标注让springboot根据标注去将mapper注入

@Mapper
    public interface ChapterMapper {
        ......
    }

1.  启动类加`@MapperScan(value = "cn.yixue.video.dao")` value 后的包一定要对应到mapper类对应的地方，比如我的mapper在dao下，就是`cn.yixue.video.dao`

@SpringBootApplication
    @MapperScan(value = "cn.yixue.video.dao")
    @EnableDiscoveryClient
    public class YixueVideoApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(YixueVideoApplication.class, args);
        }
    
    }

以下大佬给我很大的启发，灰常感谢

[https://www.cnblogs.com/cxylff/p/10969375.html][https_www.cnblogs.com_cxylff_p_10969375.html]

[https_www.cnblogs.com_cxylff_p_10969375.html]: https://www.cnblogs.com/cxylff/p/10969375.html