spring如何在JavaSAPHybris中解析NoSuchElement:null?
我创建了一个操作,将一个值修改为一个或多个项目(订单),状态为“等待手动导出”的订单修改为“导出”,现在,当我选择订单并单击“操作”按钮时,没有任何更改,并且在日志中出现以下错误:
ERROR [hybrisHTTP33] [ManualOrderExportAction]
ERROR: java.util.NoSuchElementException: null
at java.util.Collections$EmptyIterator.next(Collections.java:4210) ~[?:?]
at myExtension.backoffice.actions.ManualOrderExportListAction.perform(ManualOrderExportListAction.java:37) [?:?]
代码:
@Resource(name = "businessProcessService")
private BusinessProcessService businessProcessService;
@Override
public ActionResult<Object> perform(ActionContext<Object> actionContext){
HashSet<OrderModel> hashSet = (HashSet<OrderModel>) actionContext.getData();
try
{
businessProcessService.triggerEvent(hashSet.iterator().next().getOrderProcess().iterator().next().getCode() + "_" + "SaitManualExportEvent" ); //line 37 that generate error.
Messagebox.show(POPUP_MESSAGE);
return new ActionResult<>(ActionResult.SUCCESS);
}
catch (final Exception ex)
{
LOG.error("ERROR: ", ex);
return new ActionResult<>(ActionResult.ERROR);
}
}
# 1 楼答案
以下几行:
应更改为,类似于: