Java 如何仅获取 ELEMENT_NODE 类型的子节点
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How to get child nodes with ELEMENT_NODE type only
提问by chuonghd
I'm parsing a xml document using java DOM and I need to get every single node for doing something.
我正在使用 java DOM 解析 xml 文档，我需要获取每个节点来做某事。
I have this code:
我有这个代码：
public void analyze_file(Node node){
if(node.getNodeType() != Node.DOCUMENT_NODE){
//do something
}
NodeList list = node.getChildNodes();
for(int i=0; i<list.getLength(); i++){
if(list.item(i).getNodeType() == Node.ELEMENT_NODE){
analyze_file(list.item(i));
}
}
}
The problem is that, my xml file is very large ( > 30000 lines), and the code above needs too much time for checking whether a node is of ELEMENT_NODEtype or not. I see that if the program stopped after it reached the last ELEMENT_NODEnode, the execution time would be very small.
问题是，我的xml文件非常大（> 30000行），上面的代码需要太多时间来检查节点是否为ELEMENT_NODE类型。我看到如果程序在到达最后一个ELEMENT_NODE节点后停止，则执行时间将非常小。
Is there any way to get all child nodes whose type is ELEMENT_NODEonly?
有没有办法获取所有类型为ELEMENT_NODEonly 的子节点？
For example: NodeList list = node.getElementChildNodes();
例如： NodeList list = node.getElementChildNodes();
Thanks for any help!
谢谢你的帮助！
采纳答案by pasha701
node.getElementsByTagName("*")
From JavaDoc: Returns a NodeList of all descendant Elements with a given tag name, in document order. Name - The name of the tag to match on. The special value "*" matches all tags.
来自 JavaDoc：以文档顺序返回具有给定标记名称的所有后代元素的 NodeList。名称 - 要匹配的标签的名称。特殊值“*”匹配所有标签。
