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

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

小鱼儿 2022-12-29 00:21 112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：

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 {
```
......
```
}
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);
}
```
}