dom 4 j操作xmlのdemo（共有）

package com.cn.shop.util;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.util.Iterator;
import java.util.List;

import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

/**
* 
* @author NH
*
*/
public class XmlUtils {

public static Document getDocument() {

// 1.  xml    document  
SAXReader reader = new SAXReader();
Document document = null;
try {
document = reader.read("D:\\itext\\27663.xml");
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// 2.    xml   
/*
* String xmlFilePath = "D:\\itext\\27663.xml"; try { document =
* DocumentHelper.parseText(xmlFilePath); } catch (DocumentException e)
* { // TODO Auto-generated catch block e.printStackTrace(); } // 3.  
* Document document = DocumentHelper.createDocument(); Element root =
* document.addElement("csdn");
*/
return document;
}

public static void anaXml() throws Exception {

//   xml        document  
SAXReader reader = new SAXReader();

try {
Document document = reader.read("D:\\itext\\27663.xml");

Element root = document.getRootElement();

System.out.println(root.getName());
getElement(root);
/* elementMethod(root); */

/*
* //        Element element = root.element("title");
* 
* 
* //  element id       Attribute attr = element.attribute("id");
* //     element.remove(attr);
* 
* //       element.addAttribute("author", "  ");
* 
* //        Element newElement = root.addElement("where"); //
*         newElement.setText("       ，         ");
* 
* //   element  where       Element author =
* element.element("where"); //        boolean flag =
* element.remove(author); //   true      ，    
* System.out.println(flag); //   CDATA  
* element.addCDATA("   ，       ."); //            writer(document);
*/

} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

/*
* 
*       
*/
public static void getElement(Element root) {
//              
List<Attribute> as = root.attributes();

for (Attribute a : as) {

System.out.println("         :" + a.getName());

/*
* System.out.println("         ：" + a.getText());
* 
* System.out.println("        :" + a.getValue());
*/

}

if (!root.getTextTrim().equals("")) {

System.out.println("    ：：：：" + root.getText());
}

Iterator<Element> el = root.elementIterator();

while (el.hasNext()) {

//          
Element e = el.next();
//         
getElement(e);
}

}

/**
*   Element  element   elements     
* 
* @param node
*/
public static void elementMethod(Element node) {
//   node   ，                 。
Element e = node.element("info");
//           ，    chapter     (                 )
Element author = e.element("classification");

System.out.println(e.getName() + "----" + author.getText());

//              ，        classification      。
List<Element> authors = e.elements("classification");
for (Element aut : authors) {
System.out.println(aut.getText());
}

//                     。
List<Element> elements = e.elements();

for (Element el : elements) {
System.out.println(el.getText());
}

}

/**
*  document        
* 
* @param document
* @throws Exception
*/
public static void writer(Document document) throws Exception {
//      
// OutputFormat format = OutputFormat.createCompactFormat();
//        
OutputFormat format = OutputFormat.createPrettyPrint();
//     
format.setEncoding("UTF-8");
//   XMLWriter  ,            
/*
* XMLWriter writer = new XMLWriter(new OutputStreamWriter(new
* FileOutputStream(new File("src//a.xml")), "UTF-8"), format);
*/

File file = new File("c://index//   .xml");

FileOutputStream fos = new FileOutputStream(file);

OutputStreamWriter osw = new OutputStreamWriter(fos, "UTF-8");

XMLWriter writer = new XMLWriter(osw);

//   
writer.write(document);
//     
writer.flush();
//     
writer.close();
}

//           xml    
public void test() throws Exception {

//   saxreader  
SAXReader reader = new SAXReader();
//       ，        Document  
Document document = reader.read(new File("src//c.xml"));
//      
Element root = document.getRootElement();
//         
String docXmlText = document.asXML();
System.out.println(docXmlText);
System.out.println("---------------------------");
// csdn          
String rootXmlText = root.asXML();
System.out.println(rootXmlText);
System.out.println("---------------------------");
//   java         
Element e = root.element("java");
System.out.println(e.asXML());

}

/**
*     document    document             xml  
* 
* @throws Exception
*/
public void test2() throws Exception {

Document document = DocumentHelper.createDocument();//      
Element root = document.addElement("csdn");
Element java = root.addElement("java");
java.setText("java ");
Element ios = root.addElement("ios");
ios.setText("ios ");

writer(document);
}

/**
*           Document  
* 
* @throws Exception
*/
public void test1() throws Exception {
String text = "<csdn><java>Java </java><net>Net </net></csdn>";
Document document = DocumentHelper.parseText(text);
Element e = document.getRootElement();
System.out.println(e.getName());
writer(document);
}

/**
*  document        
* 
* @param document
* @throws Exception
*/
public void writer1(Document document) throws Exception {
//      
// OutputFormat format = OutputFormat.createCompactFormat();
//        
OutputFormat format = OutputFormat.createPrettyPrint();
//     
format.setEncoding("UTF-8");
//   XMLWriter  ,            
// XMLWriter writer = new XMLWriter(new FileWriter(new
// File("src//a.xml")),format);
XMLWriter writer = new XMLWriter(new OutputStreamWriter(new FileOutputStream(new File("src//c.xml")), "UTF-8"),
format);
//   
writer.write(document);
//     
writer.flush();
//     
writer.close();
}

public static void main(String[] args) {

try {
anaXml();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

}