import java.io.FileOutputStream;import java.io.IOException;import org.jdom.Document;import org.jdom.Element;import org.jdom.JDOMException;import org.jdom.output.Format;import org.jdom.output.XMLOutputter;public class Java2XML {  Book[] books = new Book[]  {      new Book("1","唐詩三百首"),      new Book("2","Think in Java"),      new Book("3","神雕俠侶"),      new Book("4","葵花寶典")  };  public void BuildXMLDoc() throws IOException, JDOMException {    // 創建根節點 并設置它的屬性 ;    Element root = new Element("books").setAttribute("count", "4");    // 將根節點添加到文檔中；    Document Doc = new Document(root);    for (int i = 0; i < books.length; i++) {      // 創建節點 book;      Element elements = new Element("book");      // 給 book 節點添加子節點并賦值；      elements.addContent(new Element("id").setText(books[i].getBook_id()));      elements.addContent(new Element("name").setText(books[i].getBook_name()));      //      root.addContent(elements);    }    // 輸出 books.xml 文件；    // 使xml文件 縮進效果    Format format = Format.getPrettyFormat();    XMLOutputter XMLOut = new XMLOutputter(format);    XMLOut.output(Doc, new FileOutputStream("c:/books.xml"));  }  public static void main(String[] args) {    try {      Java2XML j2x = new Java2XML();      System.out.println("正在生成 books.xml 文件...");      j2x.BuildXMLDoc();    } catch (Exception e) {      e.printStackTrace();    }    System.out.println("c:/books.xml 文件已生成");  }}