spring boot不能注入JpaRepository接口，提示找不到bean

Question

Field studentRepository in com.example.demo.StudentController required a bean of type 'com.example.demo.StudentRepository' that could not be found.

Action:

Consider defining a bean of type 'com.example.demo.StudentRepository' in your configuration.

@RestController
public class StudentController {

    @Autowired
    private StudentRepository studentRepository;

    @GetMapping(value = "/findAll")
    public List<Student> studentList(){
        return studentRepository.findAll();
    }

}

StudentRepository 继承 JpaRepository，应该是个最简单的例子了

一共就一个包，SpringBootApplication和Controller都放在一个包下面，应该不会出现网上的顺序的问题

Answer 1

StudentRepository 没有注册

Answer 2

我自己解决了，jpa的包冲突了。

Answer 3

可能是你的实体类没有添加@Entity 注解