更新图谱药品缓存的查询方法

src/main/java/com/diagbot/facade/NeoFacade.java

@@ -104,7 +104,8 @@ public class NeoFacade {
 
         while (iterator.hasNext()) {
             current = iterator.next();
-            if (current.getMedicinecode_related_medicine().size() > 0) {
+            if (null!=current.getMedicinecode_related_medicine() &&
+                    current.getMedicinecode_related_medicine().size() > 0) {
                 medcodes = new ArrayList<>(current.getMedicinecode_related_medicine());
                 for (Medicine_Code mcode : medcodes) {
                     if (mcode.getMedicine_related_Anatomy().size()>0) {