BOM树显示问题

src/main/java/com/xujie/sys/modules/quote/entity/QuoteDetailBomTree.java

@@ -69,8 +69,12 @@ public class QuoteDetailBomTree {
     public void addChildren(List<QuoteDetailBomTree> nodes) {
         for (QuoteDetailBomTree node : nodes) {
             if (this.id.equals(node.getParentId())) {
-                this.list.add(node);
-                node.addChildren(nodes);  // 递归调用，添加子节点
+                // 检查是否已经添加过该节点（通过id去重）
+                boolean exists = this.list.stream().anyMatch(n -> n.getId().equals(node.getId()));
+                if (!exists) {
+                    this.list.add(node);
+                    node.addChildren(nodes);  // 递归调用，添加子节点
+                }
             }
         }
     }