一：访问或添加request/session/application属性
public String scope() throws Exception{ 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 return "scope"; } JSP: <body> ${applicationScope.app} <br> ${sessionScope.ses}<br> ${requestScope.req}<br> </body>
二：获取HttpServletRequest / HttpSession / ServletContext / HttpServletResponse对象
方法一，通过ServletActionContext.类直接获取： public String rsa() throws Exception{ HttpServletRequest request = ServletActionContext.getRequest(); ServletContext servletContext = ServletActionContext.getServletContext(); request.getSession() HttpServletResponse response = ServletActionContext.getResponse(); return "scope"; } 方法二，实现指定接口，由struts框架运行时注入： public class HelloWorldAction implements ServletRequestAware, ServletResponseAware, ServletContextAware{ private HttpServletRequest request; private ServletContext servletContext; private HttpServletResponse response; public void setServletRequest(HttpServletRequest req) { this.request=req; } public void setServletResponse(HttpServletResponse res) { this.response=res; } public void setServletContext(ServletContext ser) { this.servletContext=ser; } }