Android DOM修改xml值并保存

最新推荐文章于 2021-05-26 23:02:05 发布

winskyan

最新推荐文章于 2021-05-26 23:02:05 发布

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分类专栏： Android 文章标签： android

本文链接：https://blog.youkuaiyun.com/winskyan/article/details/108735907

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//创建DocumentBuilderFactory对象
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
try {
//创建DocumentBuilder对象
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
//通过DocumentBuilder对象的parse方法返回一个Document对象
InputStream is = null;
File file = new File(XmlConstants.CONFIG_XML_PATH);
if (!file.exists()) {
is = context.getResources().openRawResource(R.raw.local_config_info);
} else {
is = new FileInputStream(file);
}
Document document = documentBuilder.parse(is);

try {
               NodeList nodeList = document.getElementsByTagName("tag");
               if (nodeList.getLength() > 0) {
               Node node = nodeList.item(0);
               node.setTextContent("node content");
               }
               } catch (Exception e) {
               e.printStackTrace();
               }

try {
               Element element = (Element) document.getElementsByTagName("tag2").item(0);
               element.setAttribute("attributeName", "attributeValue");
               } catch (Exception e) {
               e.printStackTrace();
               }
               OutputStream os = null;
               try {
               //将内存中的Dom保存到文件
               TransformerFactory tFactory = TransformerFactory.newInstance();
               Transformer transformer = tFactory.newTransformer();
               //设置输出的xml的格式，utf-8
               transformer.setOutputProperty(OutputKeys.ENCODING, CommonConstants.ENCODE_UTF8);
               transformer.setOutputProperty(OutputKeys.VERSION, doc.getXmlVersion());
               // 设置换行
               transformer.setOutputProperty(OutputKeys.INDENT, "yes");
               //设置缩进量
               transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "3");
               // 是否忽略XML声明
               transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
               DOMSource source = new DOMSource(doc);
               //打开输出流
               File file = new File("//file_path");
               if (!file.exists()) {
               file.createNewFile();
               }
               os = new FileOutputStream(file);
               //xml的存放位置
               StreamResult src = new StreamResult(os);
               transformer.transform(source, src);
               return true;
               } catch (Exception e) {
               e.printStackTrace();
               return false;
               } finally {
               try {
               if (null != os) {
               os.close();
               }
               } catch (Exception e) {
               e.printStackTrace();
               }

               }
} catch (Exception e) {
e.printStackTrace();
}