java 解析 xml

xml解析中，通常大家读文件，解析的时候没有问题，但是在写文件的时候常常会碰到乱码等问题，就我的个人体会是一般只要在写文件的时候采用文件流的形式，设置好当前的编码方式，通常就会避免此类问题的发生！下面有两个简单的分别是采用jdom和dom4j实现的例子：
1、dom4j

package org.lyj.xml;

import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import org.dom4j.Document;
import org.dom4j.Element;
import java.io.FileWriter;
import org.dom4j.io.OutputFormat;
import org.dom4j.Namespace;
import org.dom4j.io.XMLWriter;
import java.io.File;
import java.io.IOException;
import org.dom4j.DocumentHelper;


/**
* <p>Title: </p>
*
* <p>Description: </p>
*
* <p>Copyright: Copyright (c) 2005</p>
*
* <p>Company: </p>
*
* @author not attributable
* @version 1.0
*/
public class Dom4jTest {
    public void generateDocument() {
        org.dom4j.DocumentFactory df = new org.dom4j.DocumentFactory();
        Document document = df.createDocument();//.createDocument();
        Element catalogElement = document.addElement("catalog");
        catalogElement.addComment("An XML Catalog");
        catalogElement.addProcessingInstruction("target", "text");
        Element journalElement = catalogElement.addElement("journal");
        journalElement.addAttribute("title", "XML Zone");
        journalElement.addAttribute("publisher", "IBM developerWorks");

        Element articleElement = journalElement.addElement("article");
        articleElement.addAttribute("level", "Intermediate");
        articleElement.addAttribute("date", "December-2001");
        Element titleElement = articleElement.addElement("title");
        titleElement.setText("Java configuration with XML Schema");
        Element authorElement = articleElement.addElement("author");
        Element firstNameElement = authorElement.addElement("录音机");
        firstNameElement.setText("Marcello");
        Element lastNameElement = authorElement.addElement("刘");
        lastNameElement.setText("Vitaletti");

        document.addDocType("catalog",
                            null, "file://c:/Dtds/catalog.dtd");
        document.setXMLEncoding("gb2312");

        try {
            OutputFormat of = OutputFormat.createCompactFormat();
            of.setEncoding("gb2312");
            XMLWriter output = new XMLWriter(
                    new java.io.FileOutputStream(new File("c:/catalog/catalog.xml")),of);
            output.write(document);
            output.close();
        } catch (IOException e) {
            System.out.println(e.getMessage());
        }
    }

    public static void main(String[] argv) {
        Dom4jTest dom4j = new Dom4jTest();
        dom4j.generateDocument();
    }
}


2、jdom

package org.lyj.xml;

import org.jdom.output.Format;
import org.jdom.Document;
import java.io.IOException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
import org.jdom.JDOMException;

/**
* <p>Title: </p>
*
* <p>Description: </p>
*
* <p>Copyright: Copyright (c) 2005</p>
*
* <p>Company: </p>
*
* @author not attributable
* @version 1.0
*/
public class JdomWriter {
    public JdomWriter() {
    }

    public void write(){
        try {
            SAXBuilder builder = new SAXBuilder();
            Document doc = builder.build("aa.xml");
            XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat().setEncoding("utf-8"));
            outputter.output(doc, new java.io.FileOutputStream("bb.xml"));
        } catch (JDOMException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }


    }
    public static void main(String args[]){
        JdomWriter jd = new JdomWriter();
        jd.write();
    }
}