xml解析-jaxp修改结点

Posted 2022-02-14 selfdef

jaxp修改结点

/
修改第一个p1下面的sex内容是nan
* 1.创建解析器工厂
* 2.根据解析器工厂创建解析器
* 3.解析xml返回document
* 4.得到sex item方法
* 5.修改sex里面的值 setTextContent方法
*
* 6.回写xml
* */

private static void changeNode() throws ParserConfigurationException, SAXException, IOException,
            TransformerFactoryConfigurationError, TransformerConfigurationException, TransformerException 

        //创建解析器工厂
        DocumentBuilderFactory builderFactoty = DocumentBuilderFactory.newInstance();
        //创建解析器
        DocumentBuilder builder = builderFactoty.newDocumentBuilder();
        //解析xml返回document
        Document document = builder.parse("src/person.xml");
        
        //得到sex
        Node sex1 = document.getElementsByTagName("sex").item(0);
        //修改sex值
        sex1.setTextContent("nan");
        
        //回写xml
        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        transformer.transform(new DOMSource(document), new StreamResult("src/person.xml"));