创建xml

package com.wxh.xml.create;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;

import com.xml.model.Book;

public class CreateDemo {

  public static void main(String[] args) throws IOException {
    
    List<Book> books=new ArrayList<Book>(); 
    books.add(new Book("001", "西游记", "吴承恩", "北京大学出版社", 39.8));
    books.add(new Book("002", "红楼梦", "曹雪芹", "北京大学出版社", 58.8));
    books.add(new Book("003", "三国演义", "罗贯中", "北京大学出版社", 34.8));
    books.add(new Book("004", "水浒传", "施耐庵", "北京大学出版社", 28.8));
    
    File file=new File("book.xml");
    //获取目标文件的输出流
    FileOutputStream fos=new FileOutputStream(file);    
    
    //创建文档对象
    Document document=DocumentHelper.createDocument();
    //向文档中添加根标签
    Element root=document.addElement("books");
    
    //编辑数据集合，根据数据在文档中生成对应元素和属性
    for (Book book : books) {
      Element b=root.addElement("book").addAttribute("bno", book.getBno());     
      b.addElement("name").addText(book.getName());
      b.addElement("author").addText(book.getAuthor());
      b.addElement("publish").addText(book.getPublish());
      b.addElement("price").addText(book.getPrice()+"");
    }
    
    OutputFormat fmt=OutputFormat.createPrettyPrint();    
    
    XMLWriter writer=new XMLWriter(fos,fmt);
    writer.write(document);
    writer.flush();
    writer.close();
        
  }
  
}

Book.Java

package com.xml.model;

public class Book {
  private String bno; //编号
  private String name; //书名
  private String author;//作者
  private String publish;//出版社
  private double price;//单价
  
  public Book() {
  }

  public Book(String bno, String name, String author, String publish,
      double price) {
    super();
    this.bno = bno;
    this.name = name;
    this.author = author;
    this.publish = publish;
    this.price = price;
  }

  public String getBno() {
    return bno;
  }

  public void setBno(String bno) {
    this.bno = bno;
  }

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public String getAuthor() {
    return author;
  }

  public void setAuthor(String author) {
    this.author = author;
  }

  public String getPublish() {
    return publish;
  }

  public void setPublish(String publish) {
    this.publish = publish;
  }

  public double getPrice() {
    return price;
  }

  public void setPrice(double price) {
    this.price = price;
  } 
}