基于Java创建XML（无中文乱码）过程解析

package com.zyb.xml;
 
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
 
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
 
public class TestXml2 {
 
  public static void main(String[] args) throws Exception {
    // TODO Auto-generated method stub
    Document doc = DocumentHelper.createDocument();
    //1.创建根节点
    Element root = doc.addElement("books");
    for(int i=0;i<2;i++){
      //2.为根节点添加元素
      Element book = root.addElement("book");
      //3.如果有属性进行添加
      book.addAttribute("id", "001");
      //4.为元素继续添加元素
      Element author = book.addElement("author");
      Element price = book.addElement("price");
      Element time = book.addElement("time");
      //5.给对应元素赋值
      author.addText("亚历山大");
      price.addText("12.25");
      time.addText("2015-09-05");
    }
 
    //良好的输出格式
    OutputFormat format = OutputFormat.createPrettyPrint();
    //6.//创建一个xml文件
    OutputStream out = new FileOutputStream("src/book2.xml");
    Writer wr = new OutputStreamWriter(out, "UTF-8");//用可改变编码的OutputStreamWriter代替了普通的FileWriter解决中文乱码问题 
    XMLWriter output = new XMLWriter(wr,format); 
    //7.将doc输出到xml文件中
    output.write(doc);
    //8.关闭资源
    wr.close(); 
    out.close();       
    output.close();
  }
 
}