From f1b88d52c76ff05c2887a7ec0435f598f8aa128d Mon Sep 17 00:00:00 2001
From: jaysunxiao <jaysunxiao.gmail.com>
Date: Sun, 2 Jan 2022 21:27:28 +0800
Subject: [PATCH] =?UTF-8?q?perf[protocol]:=20=E6=96=B0=E5=A2=9E=E9=80=9A?=
 =?UTF-8?q?=E8=BF=87Dom=E7=9A=84tag=E8=8E=B7=E5=8F=96=E6=A0=87=E7=AD=BE?=
 =?UTF-8?q?=E7=9A=84=E6=96=B9=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../java/com/zfoo/protocol/util/DomUtils.java | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/protocol/src/main/java/com/zfoo/protocol/util/DomUtils.java b/protocol/src/main/java/com/zfoo/protocol/util/DomUtils.java
index ff04eac8..919546a0 100644
--- a/protocol/src/main/java/com/zfoo/protocol/util/DomUtils.java
+++ b/protocol/src/main/java/com/zfoo/protocol/util/DomUtils.java
@@ -98,6 +98,31 @@ public abstract class DomUtils {
         return elements;
     }
 
+    public static List<Element> getElementsByTag(Element element, String tag) {
+        var elements = new ArrayList<Element>();
+
+        var queue = new LinkedList<Element>();
+        queue.add(element);
+        while (!queue.isEmpty()) {
+            var ele = queue.poll();
+
+            var tagName = ele.getTagName();
+            if (StringUtils.isNotEmpty(tagName) && tagName.equalsIgnoreCase(tag)) {
+                elements.add(ele);
+                continue;
+            }
+
+            var eles = DomUtils.getChildElements(ele);
+            if (CollectionUtils.isNotEmpty(eles)) {
+                for (var e : eles) {
+                    queue.offer(e);
+                }
+            }
+        }
+
+        return elements;
+    }
+
     /**
      * 只返回第一层的孩子节点，不返回第一层孩子节点的孩子节点
      * <p>