package com.tntxia.bean;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Component;

@Component
public class User {
    @Autowired
    private ApplicationContext applicationContext;

    public void show() {
        System.out.println("User:"+applicationContext.getClass());
    }
}

package com.tntxia.bean;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class Book implements ApplicationContextAware {
    private ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext=applicationContext;
    }

    public void show() {
        System.out.println("book:"+applicationContext.getClass());
    }
}

package com.tntxia.bean;

import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Component;

@Component
public class Bank {
    private ApplicationContext applicationContext;
    //spring 4.3 提供,与构造方法调用有关
    public Bank(ApplicationContext applicationContext) {
        this.applicationContext=applicationContext;
    }
    public void show() {
        System.out.println("bank:"+applicationContext.getClass());
    }
}

package com.tntxia;

import com.tntxia.bean.Bank;
import com.tntxia.bean.Book;
import com.tntxia.bean.User;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class App {

	public static void main(String[] args) {
		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext("com.tntxia.bean");

		User bean = (User) context.getBean("user");
		bean.show();
		Book bean2 = (Book) context.getBean("book");
		bean2.show();
		Bank bean3 = (Bank) context.getBean("bank");
		bean3.show();
		context.close();
	}

}