No qualifying bean of type 'repository.PersonRepository' available

Omar B. :

I m trying to follow a Spring Boot example , I searched on internet for few hours without find a solution to my case . most of solution I found they said to put @ComponentScan to scan the package , am I missing something , any hep is appreciated .

SpringBootApplication class:

package ben;

@SpringBootApplication
@EnableAutoConfiguration
@ComponentScan({"services","repository", "web"}) 
public class SpringBootWebApplication
{
public static void main (String  [] args) {
    SpringApplication.run(SpringBootWebApplication.class, args);
  }

}

PersonRepository class:

package ben.repository;

@Repository
public interface PersonRepository extends CrudRepository<Bde, Integer> {

}

PersonService:

package ben.services;

import models.Bde;

public interface PersonService
{
  public Iterable <Bde> findAll();
}

PersonServiceImpl:

package ben.services;

@Service

public class PersonServiceImpl implements PersonService
{
  @Autowired
  private PersonRepository personRepository;

  @Override
  public Iterable<Bde> findAll()
  {

    return personRepository.findAll();
  }

}

PersonRest class:

package ben.web;    
@RestController
public class PersonRest
{
  @Autowired
  //@Qualifier("PersonServiceImpl")
  private PersonService personService;

  @RequestMapping("/person")
  @ResponseBody
  public  Iterable <Bde> findAll() {

    Iterable <Bde> persons=personService.findAll();
    return persons;
  }

}

package structure updated like suggested :

Andrei Sfat :

You are limiting yourself to the package service

@ComponentScan("services") 

this is equal to

@ComponentScan(basePackages = "services")

You need to specify all packages in order for your beans to be instantiated

An example on how to scan all your beans (services, repository and web)

@ComponentScan({"services","repository", "web"})

As an alternative you can do the following:

1. move everything in a package and the SpringBootWebApplication class would sit at the root of that package.

An example:

All your app sits on com.yourapp. If you put the SpringBootWebApplication in com.yourapp, there is not need for the @ComponentScan annotation anymore and your class gets simplified just with the @SpringBootApplication:

package com.yourapp;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringBootWebApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringBootWebApplication.class, args);
    }

}