Cannot retrieve definition for form bean null on action错误

 

================代码开始===============
jsp:< ml:form>
config页面:
    type="com.jpkc.admin.action.LogoutAction"
 >
   

java文件:
public class LogoutAction extends Action {

 @Override
 public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
 
  HttpSession session = request.getSession(true);
  session.removeAttribute("username");
  return mapping.findForward("login");
 }

}

==================代码结束===============
改成:
< ml:form>还不行还是出现 Cannot retrieve definition for form bean null on action /admin/exit.do这个错误。

如果要用到html:form标签则在strtus-config.xml中必须为其创建form-beans
java_jr(275451870) 00:31:09
成功显示,换成就行了,哈哈。。

==========调试成功=============

 

结论:困扰了大半天,在群里也是没人能明白,到网上查了错误才了解到如果jsp页面中要用到标签的 话务必得创建它的form-bean,否则就会提示Cannot retrieve mapping for action这个错误。

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