java基礎---->java內建的xml解析

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　　在查看公司架構的源碼的時候，發現架構用的是jdk內建的xml解析。今天，想著對它總結一下。

利用jdk內建的xml建立文檔一、 CreateXmlFile類如下：

package com.huhx.saxxml;import java.io.FileOutputStream;import java.io.PrintWriter;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.transform.OutputKeys;import javax.xml.transform.Transformer;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;public class CreateXmlFile {    public static void parseXml(String path) {        DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();        try {            DocumentBuilder dombuilder = builderFactory.newDocumentBuilder();            Document document = dombuilder.newDocument();            Element root = document.createElement("persons");            document.appendChild(root);            // 第一個人            Element person1 = document.createElement("person");            person1.setAttribute("name", "Linux");            root.appendChild(person1);            Element sex = document.createElement("sex");            sex.appendChild(document.createTextNode("女"));            person1.appendChild(sex);            Element address = document.createElement("address");            address.appendChild(document.createTextNode("湖北"));            person1.appendChild(address);            Element phoneNumber = document.createElement("phone");            phoneNumber.appendChild(document.createTextNode("155124578**"));            person1.appendChild(phoneNumber);            // 第二個人            Element person2 = document.createElement("person");            person2.setAttribute("name", "Huhx");            root.appendChild(person2);            Element sex2 = document.createElement("sex");            sex2.appendChild(document.createTextNode("男"));            person2.appendChild(sex2);            Element address2 = document.createElement("address");            address2.appendChild(document.createTextNode("湖南"));            person2.appendChild(address2);            Element phoneNumber2 = document.createElement("phone");            phoneNumber2.appendChild(document.createTextNode("155124578**"));            person2.appendChild(phoneNumber2);            // 將上述的document寫入到檔案中            TransformerFactory tf = TransformerFactory.newInstance();            Transformer transformer = tf.newTransformer();            DOMSource source = new DOMSource(document);            transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");            transformer.setOutputProperty(OutputKeys.STANDALONE, "yes");            transformer.setOutputProperty(OutputKeys.INDENT, "yes");            PrintWriter pw = new PrintWriter(new FileOutputStream(path));            StreamResult result = new StreamResult(pw);            transformer.transform(source, result);        } catch (Exception e) {            e.printStackTrace();        }    }    public static void main(String[] args) {        parseXml("text.xml");    }}

 

二、 產生的text.xml檔案如下：

<?xml version="1.0" encoding="UTF-8" standalone="no"?><persons>    <person name="Linux">        <sex>女</sex>        <address>湖北</address>        <phone>155124578**</phone>    </person>    <person name="Huhx">        <sex>男</sex>        <address>湖南</address>        <phone>155124578**</phone>    </person></persons>

 

利用jdk內建的xml解析文檔一、 ReadXmlFile.java類的內容如下：

package com.huhx.saxxml;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.NodeList;public class ReadXmlFile {    public static void readXml(String path) {        try {            DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();            DocumentBuilder builder = builderFactory.newDocumentBuilder();            Document document = builder.parse(path);            Element rootElement = document.getDocumentElement();            System.out.println("根項目：" + rootElement.getNodeName());            NodeList childNodes = rootElement.getElementsByTagName("person");            for (int i = 0; i < childNodes.getLength(); i++) {                Element element = (Element) childNodes.item(i);                String name = element.getAttribute("name");                String content = element.getElementsByTagName("sex").item(0).getFirstChild().getNodeValue();                String address = element.getElementsByTagName("address").item(0).getFirstChild().getNodeValue();                String phone = element.getElementsByTagName("phone").item(0).getFirstChild().getNodeValue();                System.out.println("name: " + name + ", content: " + content + ", address: " + address + ", phone: " + phone);            }        } catch (Exception e) {            e.printStackTrace();        }    }    public static void main(String[] args) {        readXml("text.xml");    }}

 

二、控制台列印結果如下：

根項目：personsname: Linux, content: 女, address: 湖北, phone: 155124578**name: Huhx, content: 男, address: 湖南, phone: 155124578**

 

友情連結

java基礎---->java內建的xml解析