java使用dom讀取，更新xml檔案

標籤：java讀取   更新xml檔案   

package com.sun.xml;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.OutputStreamWriter;import java.io.UnsupportedEncodingException;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.parsers.ParserConfigurationException;import javax.xml.transform.OutputKeys;import javax.xml.transform.Transformer;import javax.xml.transform.TransformerException;import javax.xml.transform.TransformerFactory;import javax.xml.transform.dom.DOMSource;import javax.xml.transform.stream.StreamResult;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.Node;import org.w3c.dom.NodeList;import org.w3c.dom.Text;import org.xml.sax.SAXException;public class ReadXml {    public static void main(String[] args) throws ParserConfigurationException, TransformerException {        Document document=read("C:\\Users\\Administrator\\Desktop\\bookstore1.xml");        String path="C:\\Users\\Administrator\\Desktop\\bookstore1.xml";        addNode(document, path, "張三");    }    public static Document  read(String path) throws ParserConfigurationException, TransformerException{        Document document=null;        DocumentBuilderFactory bf=DocumentBuilderFactory.newInstance();        DocumentBuilder builder=bf.newDocumentBuilder();        File file=new File(path);        try {            document= builder.parse(file);            //得到值為title的標籤，返回的是集合            NodeList nodeList=document.getElementsByTagName("title");                  for(int i=0;i<nodeList.getLength();i++){                Node node=nodeList.item(i);                String string=node.getTextContent();                System.out.println(string);                updateXmlNode(document, node, "sssss", path);            }                    } catch (SAXException | IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return document;    }    public static void updateXmlNode(Document document,Node node,String text,String path) throws TransformerException, UnsupportedEncodingException, FileNotFoundException{        node.setTextContent(text);        writeToFile(document, path);    }        public static void addNode(Document document,String path,String text){        Text text2=document.createTextNode(text);        Text text3=document.createTextNode(text);        Text text4=document.createTextNode(text);                Element element=document.createElement("book");        Element element2=document.createElement("title");        Element element3=document.createElement("author");            Element element4=document.createElement("price");                element2.appendChild(text2);        element3.appendChild(text3);        element4.appendChild(text4);        element.appendChild(element2);        element.appendChild(element3);        element.appendChild(element4);        NodeList nodeList= document.getElementsByTagName("bookstore");         Node node=nodeList.item(0);        node.appendChild(element);        try {            writeToFile(document, path);        } catch (UnsupportedEncodingException | FileNotFoundException                | TransformerException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }        public static void writeToFile(Document document,String path) throws TransformerException, UnsupportedEncodingException, FileNotFoundException{        TransformerFactory transformerFactory=TransformerFactory.newInstance();        Transformer transformer=transformerFactory.newTransformer();        /*         * 格式化輸出xml文檔，換行和縮排*/          transformer.setOutputProperty(OutputKeys.INDENT, "yes");          transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");        //transformer.transform(new DOMSource(document), new StreamResult(path));        /*         * 設定輸出資料流的編碼為UTF-8*/        OutputStreamWriter oWriter=new OutputStreamWriter(new FileOutputStream(new File(path)),"UTF-8");        document.setXmlStandalone(true);        transformer.transform(new DOMSource(document),new StreamResult(oWriter));    }}

xml檔案如下：

<?xml version="1.0" encoding="utf-8"?> <bookstore>   <!--記錄書本的資訊-->   <book>    <title>資料結構</title>    <author>嚴蔚敏</author>    <price>30.00</price>  </book></bookstore>

本文出自 “matengbing” 部落格，請務必保留此出處http://matengbing.blog.51cto.com/11395502/1876353

java使用dom讀取，更新xml檔案