——我恰好爱上了你 这关无性别
spring为ApplicationContext提供的3种实现分别是:
ClassPathXmlApplicationContext, FileSystemXmlApplicationContext,XmlWebApplicationContext,
其中 XmlWebApplicationContext是专为Web工程定制的。使用举例如下:
1. FileSystemXmlApplicationContext- eg1.
- pplicationContext 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 ); //加载多个配置文件
- eg3.
- ApplicationContext ctx =new FileSystemXmlApplicationContext("D:roject/bean.xml");//根据具体路径加载文件
2. ClassPathXmlApplicationContext
- eg1.
- pplicationContext 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。
3. XmlWebApplicationContext
- eg1.
- ServletContext servletContext = request.getSession().getServletContext();
- ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext);