spring快速入门（四）

一、在spring快速入门（三）的基础上，我们来了解BeanFactory及配置。

　　Client

package com.murong.client;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.murong.action.UserAction;
import com.murong.action.UserActionImpl;

public class Client {
    
    public static void main(String[] args) {
        
        BeanFactory bf = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserAction userAction = (UserAction) bf.getBean("userActionImpl");
        userAction.addUser("久伴",24);
    }
}

　　首先BeanFactory是一个接口 ，有不同的实现类、当然还有其他的实现类，比如　　ApplicationContext

package com.murong.client;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.murong.action.UserAction;
import com.murong.action.UserActionImpl;

public class Client {
    
    public static void main(String[] args) {
        
        /*BeanFactory bf = new ClassPathXmlApplicationContext("applicationContext.xml");*/
        ApplicationContext bf = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserAction userAction = (UserAction) bf.getBean("userActionImpl");
        userAction.addUser("久伴",24);
    }
}