基本操作--创建xml文件

[java]代码库
package s0210xml文件的读取和创建;
 
import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
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.Document;
import org.w3c.dom.Element;
 
 
public class CreatXML {
 
    public static void main(String[] args) {
        try {
             
             
            //这几行代码基本是固定的
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = factory.newDocumentBuilder();//通过工厂类创建一个builder
            Document document = builder.newDocument();             //用builder创建一个文件
            //这几行代码基本是固定的
             
            Element root = document.createElement("Languages");    //创建元素节点
            root.setAttribute("cat", "itt");                        //设置属性(属性名,属性值)
             
            //创建子节点lan1
            Element lan1 = document.createElement("lan");
            lan1.setAttribute("id", "1");
            Element name1 = document.createElement("name");
            name1.setTextContent("Java");
            Element ide1 = document.createElement("ide");       
            ide1.setTextContent("Eclipse");                   //setTextContent设置标签中间的文本内容
            lan1.appendChild(name1);                          //添加子节点
            lan1.appendChild(ide1);                           //添加子节点
            //创建子节点lan1
             
            //创建子节点lan1
            Element lan2 = document.createElement("lan");
            lan2.setAttribute("id", "2");
            Element name2 = document.createElement("name");
            name2.setTextContent("Swift");
            Element ide2 = document.createElement("ide");
            ide2.setTextContent("XCode");
            lan2.appendChild(name2);
            lan2.appendChild(ide2);
            //创建子节点lan1
             
            //创建子节点lan1
            Element lan3 = document.createElement("lan");
            lan3.setAttribute("id", "3");
            Element name3 = document.createElement("name");
            name3.setTextContent("C#");
            Element ide3 = document.createElement("ide");
            ide3.setTextContent("Visual Studio");
            lan3.appendChild(name3);
            lan3.appendChild(ide3);
            //创建子节点lan1
             
            //根节点添加子节点
            root.appendChild(lan1);
            root.appendChild(lan2);
            root.appendChild(lan3);
            document.appendChild(root);//很重要,要将根节点添加到document中
            //根节点添加子节点
             
 
            //这里是固定格式
            TransformerFactory transformerFactory = TransformerFactory.newInstance();
            Transformer transformer = transformerFactory.newTransformer();//作用,将xml文档转换为其他格式
            transformer.setOutputProperty("encoding", "UTF-8");
            //这里是固定格式
             
             
            //将xml文件保存为文件
            //new StreamResult(new File("newxml.xml")转换为文件,在工程目录中刷新,就会显示xml文件,然后按ctrl+i对xml文档格式化
            transformer.transform(new DOMSource(document), new StreamResult(new File("src/s0210xml文件的读取和创建/newxml.xml")));
            //将xml文件保存为文件                                              
             
        } catch (ParserConfigurationException e) {
            e.printStackTrace();
        } catch (TransformerConfigurationException e) {
            e.printStackTrace();
        } catch (TransformerException e) {
            e.printStackTrace();
        }
    }
 
}
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