Action中:
private IConfigQuestionFirstKindService cqfService;
private IConfigQuestionSecondKindService cqsService;
/**
* 跳转到试题登记页面
* Method toAdd
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward toAdd(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
List<ConfigQuestionFirstKind> cqfLists = cqfService.lists();
List<ConfigQuestionSecondKind> cqsLists = cqsService.lists();
request.setAttribute("cqfLists", cqfLists);
request.setAttribute("cqsLists", cqsLists);
return mapping.findForward("add");
}
报:java.lang.NullPointerException
at com.youcai.y243.struts.action.EngageSubjectsAction.toAdd(EngageSubjectsAction.java:53)
private IConfigQuestionFirstKindService cqfService;
private IConfigQuestionSecondKindService cqsService;
/**
* 跳转到试题登记页面
* Method toAdd
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward toAdd(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
List<ConfigQuestionFirstKind> cqfLists = cqfService.lists();
List<ConfigQuestionSecondKind> cqsLists = cqsService.lists();
request.setAttribute("cqfLists", cqfLists);
request.setAttribute("cqsLists", cqsLists);
return mapping.findForward("add");
}
报:java.lang.NullPointerException
at com.youcai.y243.struts.action.EngageSubjectsAction.toAdd(EngageSubjectsAction.java:53)
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List <ConfigQuestionFirstKind> cqfLists = cqfService.lists();
cqfLists 在你的方法里明显没有定义,莫非是一个全局变量?应该是cqfLists没有被初始化。是null的
cqfService为空,没有实例化。