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在Struts2获得WebApplicationContext的方法


1. Action实现implements ServletRequestAware,并实现setServletRequest()方法。

public void setServletRequest(HttpServletRequest request) {
// TODO Auto-generated method stub
this.request = request;

}




以下是获得的方法:


A.

WebApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(request.getSession().getServletContext());
ApplicationContext ac1 = WebApplicationContextUtils.getRequiredWebApplicationContext(request.getSession().getServletContext());//失败时抛出异常
ApplicationContext ac2 = WebApplicationContextUtils.getWebApplicationContext(request.getSession().getServletContext()); //失败时返回null



B.

WebApplicationContext webApplicationContext = (WebApplicationContext)request.getSession().getServletContext().getAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE);

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