spring替ApplicationContext提供有三种实现（举例）

spring为ApplicationContext提供有三种实现（举例）

转自：http://www.blogjava.net/amigoxie/archive/2007/02/16/100086.html

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：

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

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。

XmlWebApplicationContext
?? eg1.


ServletContext servletContext = request.getSession().getServletContext();   ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext);

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