获得HttpServletRequest

Question

在Action中
ActionContext ct = ActionContext.getContext();
HttpServletRequest request = (HttpServletRequest)ct.get(ServletActionContext. HTTP_REQUEST );
Map session = (Map)ActionContext.getContext().get(ActionContext.SESSION);报空指针异常 为什么？

Answer 1

public class QuestionAction extends ActionSupport implements
ServletRequestAware, ServletResponseAware {
private HttpServletRequest request;
private HttpServletResponse response;
public void setServletRequest(HttpServletRequest request) {
this.request = request;
}
public void setServletResponse(HttpServletResponse response) {
this.response = response;
}想要获得Session、HttpSession session = request.getSession();

Answer 2

HttpServletRequest request = ServletActionContext.getRequest();

Answer 3

HttpServletRequest request = ServletActionContext.getRequest(); 直接这样获取。

Answer 4

HttpServletRequest request = ServletActionContext.getRequest();这个可以直接获取的不用那个，呵呵。祝楼主好运