package generic_di;import org.springframework.stereotype.Repository;@Repositorypublic class BaseRepository
    
      {    public void save() {        System.out.println("Repository save ...");    }}package generic_di;import org.springframework.stereotype.Repository;@Repositorypublic class UserRepository extends BaseRepository
     
       {}
     
    

package generic_di;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Repository;import org.springframework.stereotype.Service;@Servicepublic class BaseService
    
      {    @Autowired    protected BaseRepository
     
       baseRepository;    public void add() {        System.out.println("Service add ...");        System.out.println(baseRepository);    }}
     
    

package generic_di;import org.springframework.stereotype.Service;@Servicepublic class UserService extends BaseService
    
      {}
    

package generic_di;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class Main {    public static void main(String[] args) {        ApplicationContext ctx = new ClassPathXmlApplicationContext("generic_di//application.xml");        UserService userService = (UserService) ctx.getBean("userService");        userService.add();    }}