Spring加载applicationContext.xml实现spring容器管理的几种方式

package com.etc.test;

import org.junit.Test;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;

import com.etc.pojo.AX;
import com.etc.pojo.Person;

public class TestDemo {

	@Test
	public void test01() {  //传统创建对象的实现方式
		Person p = new Person();
		p.setPname("张三");
		System.out.println(p);

		AX ax = new AX();
		ax.setAname("木斧");
		p.setAx(ax);
		System.out.println(p); 
	}

	@Test
	public void test02() {    //实现方式一      加载applicationContext.xml会实例化,会立即加载类路径
		ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
//		Person p=(Person)ac.getBean("person");
//		AX ax=(AX)ac.getBean("ax");
//		ax.setAname("木斧");
//		
//		p.setPname("李四");
//		p.setAx(ax); 
//		System.out.println(p);
	}
	
	@Test
	public void test03() {   //实现方式二      加载applicationContext.xml不会去实例化，不会立即加载类路径
		Resource rs=new ClassPathResource("applicationContext.xml");
		BeanFactory ac=new XmlBeanFactory(rs);
//		Person p=(Person)ac.getBean("person");
//		AX ax=(AX)ac.getBean("ax");
//		ax.setAname("木斧");
//		
//		p.setPname("李四");
//		p.setAx(ax); 
//		System.out.println(p);
	}
	
	@Test
	public void test04() {  //实现方式三      加载applicationContext.xml不会去实例化，不会立即加载类路径
		ResourcePatternResolver rpr=new PathMatchingResourcePatternResolver();
		Resource rs=rpr.getResource("applicationContext.xml");
		BeanFactory ac=new XmlBeanFactory(rs);
	}
}