如何用最简单的方法删除xml文件下指定节点的全部内容

发布网友 发布时间：2022-04-06 06:41

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懂视网 时间：2022-04-06 11:03

php xml读取、编辑、删除节点

代码如下：

$doc = new DOMDocument();
$doc->load('bird_base.xml');
$root = $doc->getElementsByTagName('birdList');
$root = $root->item(0);
$bird = $root->getElementsByTagName('bird');
//遍历所有 bird 节点
foreach ($bird as $rootdata) {
//遍历每一个 bird 节点所有属性
 $speciesID= $rootdata->getElementsByTagName('speciesID')->item(0)->nodeValue;
 $localName= $rootdata->getElementsByTagName('localName')->item(0)->nodeValue;
 $engName= $rootdata->getElementsByTagName('engName')->item(0)->nodeValue;
 $latinName= $rootdata->getElementsByTagName('latinName')->item(0)->nodeValue;
 $bird = $this->bird->get_bird_detail($speciesID);
 if(!empty($bird))
 {
 //修改节点值
 $rootdata->getElementsByTagName('localName')->item(0)->nodeValue = $bird['localName'];
 $rootdata->getElementsByTagName('engName')->item(0)->nodeValue = $bird['engName'];
 $rootdata->getElementsByTagName('latinName')->item(0)->nodeValue = $bird['latinName'];
 }else
 {
 //删除节点
 $rootdata->parentNode->removeChild($rootdata);
 }
}
$doc->save('bird_base.xml');
bird_base.xml 示例
<?xml version="1.0" encoding="UTF-8"?>
<birdList>
<bird>
<speciesID>1</speciesID>
<localName>雪鹑</localName>
<engName>Snow Partridge</engName>
<latinName>Lerwa lerwa</latinName>
</bird>
<bird>
<speciesID>2</speciesID>
<localName>藏雪鸡</localName>
<engName>Tibetan Snowcock</engName>
<latinName>Tetraogallus tibetanus</latinName>
</bird>
</birdList>

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热心网友 时间：2022-04-06 08:11

InputStream is = new FileInputStream("D://dom4j.xml");
SAXReader reader = new SAXReader();
Document doc = reader.read(is);
doc.normalize();
Node node = doc.selectSingleNode("/datas/*");//查找datas下的第一个子结点的内空
node.getParent().remove(node);

OutputFormat outformat = OutputFormat.createPrettyPrint();
// xml自身的编码
outformat.setEncoding(doc.getXMLEncoding());
outformat.setIndent(true);

File targetFile = new File("D:/dom4j3.xml");
// 将xmlStr输出到目标路径，使用xml文件的头文件编码
OutputStream out = new FileOutputStream(targetFile);
XMLWriter writer = new XMLWriter(out, outformat);
// 是否转义特殊字符，默认true转义，false表示不转义
writer.setEscapeText(false);
writer.write(doc);
writer.flush();