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
Java代码
- eg1.
- pplicationContext ctx = new FileSystemXmlApplicationContext("bean.xml"); //加载单个配置文件
eg1.
ApplicationContext ctx = new FileSystemXmlApplicationContext("bean.xml"); //加载单个配置文件
Java代码
- eg2.
- String[] locations = {"bean1.xml", "bean2.xml", "bean3.xml"};
- ApplicationContext ctx = new FileSystemXmlApplicationContext(locations ); //加载多个配置文件
eg2.
String[] locations = {"bean1.xml", "bean2.xml", "bean3.xml"};
ApplicationContext ctx = new FileSystemXmlApplicationContext(locations ); //加载多个配置文件
Java代码
- eg3.
- ApplicationContext ctx =new FileSystemXmlApplicationContext("D:roject/bean.xml");//根据具体路径加载文件
eg3.
ApplicationContext ctx =new FileSystemXmlApplicationContext("D:roject/bean.xml");//根据具体路径加载文件
2. ClassPathXmlApplicationContext
Java代码
- eg1.
- pplicationContext ctx = new ClassPathXmlApplicationContext("bean.xml");
eg1.
ApplicationContext ctx = new ClassPathXmlApplicationContext("bean.xml");
Java代码
- 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。
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。
3. XmlWebApplicationContext
Java代码
- eg1.
- ServletContext servletContext = request.getSession().getServletContext();
- ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext);