保存XML换行和缩进

原创于 2021-03-31 17:10:02 发布 · 620 阅读

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这段代码展示了如何使用Java的DOM解析器解析XML文件，并通过Transformer进行格式化输出。首先创建了DocumentBuilderFactory实例，然后解析XML文件为Document对象。接着，通过TransformerFactory创建Transformer，设置输出属性，最后将Document对象转换并写回至同一文件，实现了XML文件的格式化。

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DocumentBuilderFactory DBF = DocumentBuilderFactory.newInstance();
DocumentBuilder DB = null;
try {
	DB = DBF.newDocumentBuilder();
} catch (Exception e) {
	Log.e(Thread.currentThread().getStackTrace()[2] + "", e.toString());
}
Document document = null;
try {
	document = DB.parse(new FileInputStream(filepath));
} catch (Exception e) {
	Log.e(Thread.currentThread().getStackTrace()[2] + "", e.toString());
}
TransformerFactory TF = TransformerFactory.newInstance();
Transformer transformer = null;
try {
	transformer = TF.newTransformer();
} catch (Exception e) {
	Log.e(Thread.currentThread().getStackTrace()[2] + "", e.toString());
}
transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
transformer.setOutputProperty(OutputKeys.INDENT, "yes"); // 换行
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4"); // 缩进
DOMSource DOMS = new DOMSource(document);
StreamResult SR = new StreamResult(new File(filepath));
try {
	transformer.transform(DOMS, SR);
} catch (Exception e) {
	Log.e(Thread.currentThread().getStackTrace()[2] + "", e.toString());
}

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