Spring mvc 报错:No qualifying bean of type [java.lang.String] found for dependency:

时间:2022-09-11 15:02:56

具体错误:

No qualifying bean of type [java.lang.String] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}

原因:

1.对应要注入的实现类没有 加注解,如dao层 @Repository  如service层  @Service

2."You generally autowire to your interface type and not impl."调用的接口是否有具体的实现类。

3.@Autowired下面,没有类,直接跟了@RequestMapping。【我报错的原因。无语....】