Java中采用Dom4j解析XML文件(2)

import java.io.File;
import java.io.FileOutputStream;
 
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
 
 
public class Demo {
    public static void main(String[] args) throws Exception {
        Document doc = DocumentHelper.createDocument();
        //增加根节点
        Element books = doc.addElement("books");
        //增加子元素
        Element book1 = books.addElement("book");
        Element title1 = book1.addElement("title");
        Element author1 = book1.addElement("author");
         
        Element book2 = books.addElement("book");
        Element title2 = book2.addElement("title");
        Element author2 = book2.addElement("author");
         
        //为子节点添加属性
        book1.addAttribute("id", "001");
        //为元素添加内容
        title1.setText("Harry Potter");
        author1.setText("J K. Rowling");
         
        book2.addAttribute("id", "002");
        title2.setText("Learning XML");
        author2.setText("Erik T. Ray");
         
        //实例化输出格式对象
        OutputFormat format = OutputFormat.createPrettyPrint();
        //设置输出编码
        format.setEncoding("UTF-8");
        //创建需要写入的File对象
        File file = new File("D:" + File.separator + "books.xml");
        //生成XMLWriter对象，构造函数中的参数为需要输出的文件流和格式
        XMLWriter writer = new XMLWriter(new FileOutputStream(file), format);
        //开始写入，write方法中包含上面创建的Document对象
        writer.write(doc);
    }
}

运行结果：