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);
}
}