spring controller中获取webApplicationContext

可以在controller中使用WebApplicationContext获取

可以获取到web.xml中
param-name的值

<context-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/spring/root-context.xml</param-value></context-param>

WebApplicationContext webApplicationContext =ContextLoader.getCurrentWebApplicationContext();  String contextConfigLocation = webApplicationContext.getServletContext().getInitParameter("contextConfigLocation");

使用ServletContext获取
ServletContext servletContext=request.getSession().getServletContext();WebApplicationContext webApplicationContext = (WebApplicationContext)servletContext.getAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE);