//方法1：在类路径下寻找配置文件来实例化容器
		ApplicationContext ctx=new ClassPathXmlApplicationContext("classpath:applicationContext.xml");

//如果需要加载多个spring容器,可以定义成数组
		ApplicationContext ctx=new ClassPathXmlApplicationContext(new String[]{"classpath:applicationContext.xml"});
		

//方法2：在文件系统路径下寻找配置文件来实例化容器
		ApplicationContext ctx=new FileSystemXmlApplicationContext("G:\\workPlace2\\project2\\Spring_DI\\config\\applicationContext.xml");

//方法3：使用BeanFactory
		BeanFactory ctx=new XmlBeanFactory(new FileSystemResource("G:\\workPlace2\\project2\\Spring_DI\\config\\applicationContext.xml"));