访问或添加三个范围的属性与获取Request-Session-ServletContext-Response对象

简单获得注入属性

public String execute(){
ActionContext ctx = ActionContext.getContext();
ctx.getApplication().put("app", "应用范围");//往ServletContext里放入app
ctx.getSession().put("ses", "session范围");//往session里放入ses
ctx.put("req", "request范围");//往request里放入req
ctx.put("names", Arrays.asList("老张", "老黎", "老方"));
return "message";
}

获得三个对象的API进行操作

public String rsa() throws Exception{
HttpServletRequest request = ServletActionContext.getRequest();
ServletContext servletContext = ServletActionContext.getServletContext();
request.setAttribute("req", "请求范围属性");
request.getSession().setAttribute("ses", "会话范围属性");
servletContext.setAttribute("app", "应用范围属性");
//HttpServletResponse response = ServletActionContext.getResponse();
return "message";
}