修复bug

src/graphic/Load.js

@@ -241,6 +241,7 @@ export default class Load {
             newEdge.setWeight(edge.weight);
           }
           newEdge.setLineWidth(edge.lineWidth);
+          newEdge.setParent(edge.parent);
         }
       }
 
@@ -265,6 +266,7 @@ export default class Load {
           );
           curveRoadEdge.setStyle(curveRoadEdgeData.style);
           curveRoadEdge.setWeight(curveRoadEdgeData.weight);
+          curveRoadEdge.setParent(curveRoadEdgeData.parent);
           curveEdgeService.setCurves(curveRoadEdge);
         }
       }