没有“repository.PersonRepository”类型的合格bean可用[重复]

Question

我试图遵循一个Spring Boot的例子，我在互联网上搜索了几个小时，但没有找到解决方案。大多数的解决方案我发现他们说把@componentscan扫描包，我是不是遗漏了什么，任何hep都很感激。

SpringBootApplication类：

package ben;

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

}

PersonRepository类：

package ben.repository;

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

}

package ben.services;

import models.Bde;

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

package ben.services;

@Service

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

  @Override
  public Iterable<Bde> findAll()
  {

    return personRepository.findAll();
  }

}

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;
  }

}

按建议更新包结构：

Answer 1

您将自己限制在包服务

@ComponentScan("services") 

这等于

@ComponentScan(basePackages = "services")

您需要指定所有包，以便实例化bean

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

null

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);
    }

}