feature 甘特固支持 不传开始时间

cx-aps/cx-aps-common/src/main/java/com/rongwei/bscommon/sys/service/impl/GanttServiceImpl.java

@@ -77,7 +77,7 @@ public class GanttServiceImpl implements GanttService {
                                 List<String> productionLineId,
                                 List<String> equId) {
         log.info("甘特图查询开始时间："+ DateUtil.now());
-        if(endDate == null){
+        if(endDate == null && startDate !=null){
             List<Date> searchDateList = getSearchDate(startDate);
             startDate = searchDateList.get(0);
             endDate = searchDateList.get(1);