package com.spring.generic.di;

public class BaseRepository<T> {

}

package com.spring.generic.di;

import org.springframework.beans.factory.annotation.Autowired;

public class BaseService<T> {

    @Autowired

    protected BaseRepository<T> repository;

    public void add(){

        System.out.println("add...");

        System.out.println(repository);

    }

}

package com.spring.generic.di;

import org.springframework.stereotype.Service;

@Service

public class UserService extends BaseService<User>{

}

package com.spring.generic.di;

import org.springframework.stereotype.Repository;

@Repository

public class UserRepository extends BaseRepository<User>{

}

package com.spring.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("bean-generic.xml");

        UserService userService = (UserService)ctx.getBean("userService");

        userService.add();

    }

}