spring为ApplicationContext提供有三种实现

spring为ApplicationContext提供的3种实现分别为：ClassPathXmlApplicationContext，FileSystemXmlApplicationContext和XmlWebApplicationContext，其中XmlWebApplicationContext是专为Web工程定制的。使用举例如下： 1. FileSystemXmlApplicationContext eg1. ApplicationContext ctx = new FileSystemXmlApplicationContext("bean.xml"); //加载单个配置文件 eg2. String[] locations = {"bean1.xml", "bean2.xml", "bean3.xml"}; ApplicationContext ctx = new FileSystemXmlApplicationContext(locations ); //加载单个配置文件 eg3. ApplicationContext ctx =new FileSystemXmlApplicationContext("D:/project/bean.xml");//根据具体路径加载文件 2. ClassPathXmlApplicationContext eg1. ApplicationContext ctx = new ClassPathXmlApplicationContext("bean.xml"); eg2. String[] locations = {"bean1.xml", "bean2.xml", "bean3.xml"}; ApplicationContext ctx = new ClassPathXmlApplication(locations); 注：其中FileSystemXmlApplicationContext和ClassPathXmlApplicationContext与BeanFactory的xml文件定位方式一样是基于路径的。但经本人测试,如果使用ClassPathXmlApplicationContext 应把xml文件放在src下.还是用FileSystemXmlApplicationContext 绝对路径万无一失! 3. XmlWebApplicationContext eg1. ServletContext servletContext = request.getSession().getServletContext(); ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext);