修改bug

amos-boot-module/amos-boot-module-biz/amos-boot-module-common-biz/src/main/java/com/yeejoin/amos/boot/module/common/biz/service/impl/FireStationServiceImpl.java

@@ -84,7 +84,7 @@ public class FireStationServiceImpl extends BaseService<FireStationDto, FireStat
     @Override
     public Page<FireStationDto> getFirefighters(int pageNum, int pageSize, FireStationDto par) {
     	List<String> ids=null;
-    	if(!"-1".equals(par.getWhereBuildingId())) {
+    	if(!"-1".equals(par.getWhereBuildingId()) && null != par.getWhereBuildingId()) {
     		ids= getNodeAllnodeIds(par.getWhereBuildingId());
     	}
         List<FireStationDto> list = fireStationMapper.getFireStation((pageNum - 1) * pageSize, pageSize, par,ids);