struts2怎么获取request，session对象

IOC方式：
action类实现ServletRequestAware接口，并新建一个HttpServletRequest request
public class UserLoginAction extends ActionSupport implements ServletRequestAware{
public void setServletRequest(HttpServletRequest request) {
this.request=request;
}
然后可以生成的request得到对象，如request.getRemoteAddr()
action类实现SessionAware接口，并创建一个MAP对象session
public class UserLoginAction extends ActionSupport implements ServletRequestAware,SessionAware{
public void setServletRequest(HttpServletRequest request) {
this.request=request;
}
public void setSession(Map session) {
this.session=session;
}