Struts2 普通的java类 （Action）与Servlet通信 主要对象那个ServletActionContext 与 ActionContext对象来获取servlet中request对象和response对象

public class Hello implements ServletRequestAware, ServletResponseAware {

    private HttpServletRequest request;
    private HttpServletResponse response;


    @Override
    public void setServletRequest(HttpServletRequest httpServletRequest) {
        this.request = httpServletRequest;
    }

    @Override
    public void setServletResponse(HttpServletResponse httpServletResponse) {
        this.response = httpServletResponse;
    }
}