struts2获取request,session,application

在struts中我们经常要用到request,session,application对象，获取它们的代码记录如下。

//获取request
HttpServletRequest request = ServletActionContext.getRequest();
request.setAttribute("key",value);

//获取session
Map session= ActionContext.getContext().getSession();
request.setAttribute("key",value);

//获取application
Map application= ActionContext.getContext().getApplication();
request.setAttribute("key",value);