用dom4j修改xml（增加修改节点）

使用dom4j修改解析xml，xml文件的位置是配置在xml.properties文件中，程序打成jar包，在命令行中执行如下命令即可：

[img]http://dl.iteye.com/upload/attachment/150593/6b4ac972-cf45-3582-9a04-5e88bd0c962d.jpg" alt="[/img]

主要的java代码如下：

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;

import javax.servlet.http.HttpServlet;

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


public class RefreshXml extends HttpServlet {
	private String xmlFilePath="";
	
	public void modifyXml(String xmlProperty) throws DocumentException, IOException {
		this.getProperties(xmlProperty);
		File file = new File(xmlFilePath);
		SAXReader reader = new SAXReader();
		Document doc = reader.read(file);
		List list;

		/*
		 * 修改EntityProps
		 */
		list = doc.selectNodes("//Entity_Groups//Entity//EntityProps");
		System.out.println("需要修改的EntityProps一共有:"+list.size()+"处。");
		for(int i=0;i<list.size();i++){
			Element elt = (Element) list.get(i);
			Node node = elt.selectSingleNode("Definition");
			if(node == null){
				Element info = elt.addElement("Definition");
				info.addAttribute("xml:space", "preserve");
				info.addText(elt.selectSingleNode("Name").getText());
//				elt.selectSingleNode("Definition").setText(elt.selectSingleNode("Name").getText());
			}else{
				elt.selectSingleNode("Definition").setText(elt.selectSingleNode("Name").getText());
			}
			
		}
		
		/*
		 * 修改AttributeProps
		 */
		list = doc.selectNodes("//Entity_Groups//Entity//Attribute_Groups//Attribute//AttributeProps");
		System.out.println("需要修改的AttributeProps一共有:"+list.size()+"处。");
		for(int i=0;i<list.size();i++){
			Element elt = (Element) list.get(i);
			Node node = elt.selectSingleNode("Definition");
			if(node == null){
                                //增加节点
				Element info = elt.addElement("Definition");
				info.addAttribute("xml:space", "preserve");
				info.addText(elt.selectSingleNode("Name").getText());
//				elt.selectSingleNode("Definition").setText(elt.selectSingleNode("Name").getText());
			}else{
				elt.selectSingleNode("Definition").setText(elt.selectSingleNode("Name").getText());
			}
		}
		System.out.println("修改完毕！");
		
		XMLWriter writer = new XMLWriter(new FileOutputStream(file));
		writer.write(doc);
		writer.close();
		
	}
	
	private void getProperties(String xmlProperty) throws IOException{
		//String configFile = xmlProperty;
		String configFile = "D:/Workspaces for MyEclipse 7.1/RefreshXml/src/xml.properties";
		InputStream is = new BufferedInputStream(new FileInputStream(new File(configFile)));
		if(is == null){
			is = this.getServletContext().getResourceAsStream(configFile);
		}
		Properties ps = new Properties();
		ps.load(is);
		xmlFilePath = ps.getProperty("xmlPath");
	}  
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		if (args.length < 1) {
			System.out.println("请输入程序所需的配置文件路径作为参数:");
			System.out.println("1、要修改的xml文件的名称。");
		} else {
			String xmlProperty = args[0];
			System.out.println(xmlProperty);
			RefreshXml rx = new RefreshXml();
			try {
				rx.modifyXml(xmlProperty);
			} catch (DocumentException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
}

配置文件xml.properties中的内容也比较简单：
xmlPath=C\:\\test\\2222.xml

如下是程序jar包：
RefreshXml2.jar