Struts2_API

1.访问servletAPI方法1

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 public String execute() throws Exception {
         //request域对象==》map (struts2并不推荐使用原生request域对象)
         //不推荐
         Map<String, Object> requestScope = (Map<String, Object>) ActionContext.getContext().get("request");
         //推荐
         ActionContext.getContext().put("name", "requestTom");
         //session域对象==》map
         Map<String, Object> sessionScope = ActionContext.getContext().getSession();
         sessionScope.put("name", "sessionTom");
         //application域对象==》map
         Map<String, Object> applicationScope = ActionContext.getContext().getApplication();
         applicationScope.put("name", "applicationTom");
         return SUCCESS;
     }

request:${requestScope.name}<br> session:${sessionScope.name}<br> application:${applicationScope.name}<br>