通过四种方式访问web页面的范围对象

package com.neusoft.action;import java.util.Map;import javax.servlet.http.HttpServletRequest;import org.apache.struts2.ServletActionContext;import org.apache.struts2.interceptor.RequestAware;import org.apache.struts2.interceptor.ServletRequestAware;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;//通过实现RequestAware,SessionAware,ApplicationAware来实现对范围对象的访问，并且要实现一系列的get和set方法..来完成对范围对象的访问public class WebAction extends ActionSupport implements RequestAware,ServletRequestAware {private Map<String, Object> request;private HttpServletRequest httprequest;public String execute() throws Exception {@SuppressWarnings({ "unchecked", "static-access" })// 通过ActionContext来获取Map<String, Object>类型的范围// request,session,applicationMap<String, Object> requestq = (Map<String, Object>) ActionContext.getContext().getContext().get("request");requestq.put("name", "user");request.put("admin", "admin");// 通過ServletActionContext來實現對範圍對象的訪問HttpServletRequest request1 = ServletActionContext.getRequest();request1.setAttribute("maylor", "maylor");// 通过实现ServletRequestAware来实现对三大范围对象的访问httprequest.setAttribute("terry", "terry");return super.execute();}// public Map<String, Object> getRequest() {// return this.request;// }public void setRequest(Map<String, Object> arg0) {// TODO Auto-generated method stubthis.request = arg0;}public void setServletRequest(HttpServletRequest arg0) {// TODO Auto-generated method stubhttprequest = arg0;}}