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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 繼承 JpaRepository，應該是個最簡單的例子了

一共就一個包，SpringBootApplication和Controller都放在一個包下面，應該不會出現網上的順序的問題