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

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

package generic_di;import org.springframework.stereotype.Service;@Service
public class UserService extends BaseService<User> {
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"><context:component-scan base-package="generic_di"></context:component-scan>
</beans>

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();}
}