Java寫入xml (1)

標籤：xml   java   

Java寫入xml (1)

趙振江

Java代碼建立XML檔案

主要類 
DocumentBuilder、DocumentBuilderFactory、Document、TransformerFactory、Transformer、DOMSource、StreamResult

程式碼範例

CreateXml.java

package demo;import java.io.File;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.TransformerConfigurationException;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.Element;public class CreateXml {    // 建立DocumentBuilder    public static DocumentBuilder getDocumentBuilder() {        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();        DocumentBuilder docb = null;        try {            docb = dbf.newDocumentBuilder();        } catch (ParserConfigurationException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return docb;    }    public static boolean create(){        //擷取DocumentBuilder 對象        DocumentBuilder docb=getDocumentBuilder();        //建立Document對象   w3c        org.w3c.dom.Document doc=docb.newDocument();        //設定document格式        doc.setXmlStandalone(true);        //建立子節點         //首先建立 根節點         Element MusicType =doc.createElement("MusicType");        Element name=doc.createElement("music");        Element pop=doc.createElement("pop");        //設定 子節點 常值內容         name.setTextContent("民謠 ");        //為某些子節點設定屬性        name.setAttribute("id", "1");        pop.setTextContent("小眾");        //將目標 子節點 添加到目標根節點//      MusicType.appendChild(name);//      MusicType.appendChild(pop);        name.appendChild(pop);        MusicType.appendChild(name);        //將根節點添加到xml docment裡面去         doc.appendChild(MusicType);        //建立 TransformerFactory        TransformerFactory tff=TransformerFactory.newInstance();        //建立Transformer對象         try {            Transformer tf=tff.newTransformer();            tf.setOutputProperty(OutputKeys.INDENT, "yes");            tf.transform(new DOMSource(doc), new StreamResult(new File("music.xml")));            return true;        } catch (TransformerConfigurationException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (TransformerException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return false;    }    public static void main(String[] args) {        if(CreateXml.create())            System.out.println("創建成功！");        else            System.out.println("創建失敗！");    }}

[執行成功後] 建議右鍵Refresh下自己的工程，會在工程的根目錄下發現以下檔案 
music.xml

<?xml version="1.0" encoding="UTF-8"?><MusicType><music id="1">民謠 <pop>小眾</pop></music></MusicType>

Java寫入xml (1)