dom4j

package com.huawei.hedex.cooperate.servlet;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.nio.charset.CharacterCodingException;
import java.util.List;

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

/**
* <一句话功能简述>
* <功能详细描述>
*
* @author  zKF31134(zengfengjiao)
* Created：2010-9-7
* @since  HedEx Server V100R002C12/模块
*/
public class A
{
   
    private static File file = new File("C:/Program Files/HuaWei/hedc/libraries/navi.xml");
    /**
     * <一句话功能简述>
     * <功能详细描述>
     *
     * @param args [参数说明]
     *
     * @return void [返回类型说明]
     * @exception throws [违例类型] [违例说明]
     * @see [类、类#方法、类#成员]
     * @author  zKF31134(zengfengjiao)
     * Created：2010-9-7
     * @throws CharacterCodingException
     * @throws DocumentException
     */
    public static void main(String[] args)
    {
   
        //修改节点
        //updateNode();
       
        //删除节点
        deleteNode();
    }
   
    public static Document getDocument(){
        Document dom = null;
        SAXReader saxReader = null;
        try
        {
            File file = new File("C:/Program Files/HuaWei/hedc/libraries/navi.xml"); 
            FileInputStream  fileInput = new FileInputStream(file);
            BufferedInputStream buffered = new BufferedInputStream(fileInput);
        
            saxReader = new SAXReader();
            dom = saxReader.read(buffered);
           
        }
        catch (DocumentException e)
        {
            e.printStackTrace();
        }
        catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
      
        return dom;
    }
   
    //修改节点
    public static void updateNode(){
        String topicId = "7897964646_6464_10001";
        Document dom = A.getDocument();
        //获取所有的一级节点
        Element element = dom.getRootElement();
        //获取指定的某个节点
        Element ele =(Element) element.selectSingleNode(".//topic[@id='"+topicId+"']");
        //获取需要修改节点的txt属性
        Attribute attribute = ele.attribute("txt");
        attribute.setValue("修改成功");
       
        A.outPutXml(dom, file);  
    }

    //删除节点
    public static void deleteNode(){
        String topicId = "7897964646_6464_10002";
        //获取Document
        Document dom = A.getDocument();
        //获取所有的一级节点
        Element element = dom.getRootElement();
        //找到删除节点进行删除
        Element ele =(Element) element.selectSingleNode(".//topic[@id='"+topicId+"']");
        element.remove(ele);
       
        A.outPutXml(dom, file);
       
    }
   
   
    //输入XML文档
    public static void outPutXml(Document document,File file){
        try
        {
            FileOutputStream fileOut = new FileOutputStream(file);
            XMLWriter xmlWriter = new XMLWriter(fileOut);
            xmlWriter.write(document);
        }
        catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
        catch (UnsupportedEncodingException e)
        {
            e.printStackTrace();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
    }
}