Spring泛型依赖注入

Spring4.x中可以为子类注入子类对应的泛型类型的成员变量的引用

目录：

package generic;

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

/**
 * @author chenpeng
 * @date 2018/6/3 13:42
 */
public class BaseService<T> {
    @Autowired//整个类不使用注解，该地方使用注解是为了让子类继承这个注解
    protected BaseRepository<T> repository;

    public void save(){
        System.out.println("add....");
        System.out.println(repository);
    }
}

@Service
public class UserService extends BaseService<User> {

}

public class BaseRepository<T> {


}

@Repository
public class UserRepository extends BaseRepository<User> {

}

public class GenericTest {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("bean_generic.xml");
        UserService userService = (UserService) context.getBean("userService");
        userService.save();
    }
}