package cn.pdsu.edu;import java.util.Map;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;/** * 普通方式：Map类型的request,session,application */public class ActionDemo1 extends ActionSupport { private Map request; private Map session; private Map application; public ActionDemo1() { this.request = (Map)ActionContext.getContext().get("request"); this.session = ActionContext.getContext().getSession(); this.application = ActionContext.getContext().getApplication(); } @Override public String execute() throws Exception { request.put("message", "message"); session.put("message", "message"); application.put("message", "message"); return SUCCESS; }} 方式2--》访问map类型的： package cn.pdsu.edu;import java.util.Map;import org.apache.struts2.interceptor.ApplicationAware;import org.apache.struts2.interceptor.RequestAware;import org.apache.struts2.interceptor.SessionAware;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;/** *接口方式：Map类型的request,session,application */public class ActionDemo2 extends ActionSupport implements RequestAware,SessionAware,ApplicationAware{ private Map request; private Map session; private Map application; @Override public String execute() throws Exception { request.put("message", "message"); session.put("message", "message"); application.put("message", "message"); return SUCCESS; } public void setRequest(Map request) { this.request=request; } public void setSession(Map session) { this.session=session; } public void setApplication(Map application) { this.application = application; }} 方式3--》访问HttpServletRequest package cn.pdsu.edu;import java.util.Map;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.apache.struts2.ServletActionContext;import org.apache.struts2.interceptor.ApplicationAware;import org.apache.struts2.interceptor.RequestAware;import org.apache.struts2.interceptor.SessionAware;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;/** * 普通方式：Servlet类型的request,session,application */public class ActionDemo3 extends ActionSupport { private HttpServletRequest request; private HttpSession session; private ServletContext application; public ActionDemo3() { request = ServletActionContext.getRequest(); session = request.getSession(); application = session.getServletContext(); } @Override public String execute() throws Exception { request.setAttribute("message", "message"); session.setAttribute("message", "message"); application.setAttribute("message", "message"); return SUCCESS; }} 方式4--》通过接口访问HttpServletRequest package cn.pdsu.edu;import java.util.Map;import javax.management.j2ee.statistics.ServletStats;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.apache.struts2.ServletActionContext;import org.apache.struts2.interceptor.ApplicationAware;import org.apache.struts2.interceptor.RequestAware;import org.apache.struts2.interceptor.ServletRequestAware;import org.apache.struts2.interceptor.SessionAware;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;/** * 接口方式：Servlet类型的request,session,application */public class ActionDemo4 extends ActionSupport implements ServletRequestAware{ private HttpServletRequest request; private HttpSession session; private ServletContext application; @Override public String execute() throws Exception { request.setAttribute("message", "message"); session.setAttribute("message", "message"); application.setAttribute("message", "message"); return SUCCESS; } public void setServletRequest(HttpServletRequest request) { this.request = request; this.session = request.getSession(); this.application = session.getServletContext(); }}