fix:增加相同截止时间活动判断

@@ -333,7 +333,7 @@ func (cashPoolService *CashPoolService) CreateExchangeCashActivity(createExchang
 		return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, err.Error())
 	} else {
 		for _, activity := range activities {
-			if t2.Equal(activity.Deadline) {
+			if t2.Format("2006-01-02") == activity.Deadline.UTC().Format("2006-01-02") {
 				return nil, application.ThrowError(application.INTERNAL_SERVER_ERROR, "兑换活动截止时间不能重合")
 			}
 		}