fix nullpointer exception

@@ -22,6 +22,8 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
 import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
 import java.util.stream.Collectors;
 
 /**
@@ -64,12 +66,18 @@ public class BatchPublishTailHandler implements IEventHandler<BatchPublishTailEv
         productProxyService.batchCreateSkup(fjr.getSellerOrderGoodsList());
         List<Integer> skups;
         productProxyService.sellerBatchUpdateStatus(skups=fjr.getSkupIds(), ProductProxyService.PrdShelvelStatus.on);
-        SkupTypeCodeSupport.CodeNode codeNode = SkupTypeCodeSupport.explain(skupType.getCode());
-        if (codeNode.getRegion() == RegionEnum.MAINLAND.getCode()) {
-            //通知其他卖家价格
-            SellerOrderPriceChangeEvent sopcEvent = SellerOrderPriceChangeEvent.builder()
-                    .sellerUid(sellerUid).skup(skups.get(0)).build();
-            EventBusPublisher.publishEvent(sopcEvent);
-        }
+        Optional.ofNullable(skupType)
+                .map(SkupType::getCode)
+                .map(SkupTypeCodeSupport::explain)
+                .map(SkupTypeCodeSupport.CodeNode::getRegion)
+                .filter(region -> region == RegionEnum.MAINLAND.getCode())
+                .ifPresent(e->{
+                    //通知其他卖家价格
+                    SellerOrderPriceChangeEvent sopcEvent = SellerOrderPriceChangeEvent.builder()
+                            .sellerUid(sellerUid)
+                            .skup(skups.get(0))
+                            .build();
+                    EventBusPublisher.publishEvent(sopcEvent);
+                });
     }
 }