访问web元素(4)—取得真实类型—Ioc

package com.zchen.struts2.user.action;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.apache.struts2.interceptor.ServletRequestAware;import com.opensymphony.xwork2.ActionSupport;public class LoginAction4 extends ActionSupport implements ServletRequestAware {private HttpServletRequest request;private HttpSession session;private ServletContext application;public String execute() {request.setAttribute("r1", "r1");session.setAttribute("s1", "s1");application.setAttribute("a1", "a1");return SUCCESS; }@Overridepublic void setServletRequest(HttpServletRequest request) {this.request = request;this.session = request.getSession();this.application = session.getServletContext();}}

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