幾種獲取request,session方法
阿新 • • 發佈:2019-02-11
struts2中幾種獲得request,session等物件的方法
1、通過ActionContext來獲得舉例程式碼如下:
1、通過ActionContext來獲得舉例程式碼如下:
情況1:
ActionContext context = ActionContext.getContext();
Map request = (Map) context.get("request");
Map session = context.getSession();
Map application = context.getApplication();
情況2:
2、通過實現 RequestAware, SessionAware,ApplicationAware等介面來獲得,舉例程式碼如下:ActionContext actionContext = ActionContext.getContext(); HttpServletRequest request = (HttpServletRequest) actionContext.get(ServletActionContext.HTTP_REQUEST); HttpSession session = request.getSession(); ServletContext context = (ServletContext) actionContext.get(ServletActionContext.SERVLET_CONTEXT);
3、通過ServletActionContext來獲得,舉例程式碼如下:public class LoginAction2 implements Action, RequestAware, SessionAware, ApplicationAware { private Map request; private Map session; private Map application; public void setRequest(Map request) { this.request = request; } public void setSession(Map session) { this.session = session; } public void setApplication(Map application) { this.application = application; } }
// 利用ServletActionContext獲得request HttpServletRequest request = ServletActionContext.getRequest(); // 利用request獲得session HttpSession session = request.getSession(); // 利用ServletActionContext獲得servletContext ServletContext context = ServletActionContext.getServletContext();