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

import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

public class Test1 {

    public static void main(String[] args) {
        SAXReader reader = new SAXReader();
        File file = new File("d:\\test.xml");        
        try {
            Document document = reader.read(file);
            
            List<Element> urls = document.selectNodes("abc/bc/url");
            if(urls != null && urls.size() > 0){
                for(Iterator it = urls.iterator();it.hasNext();){
                    Element url = (Element)it.next();
                    System.out.println(url.getText());//打印原值
                    
                    url.setText("http://forum.csdn.net/");//修改
                }
            }
            
            
            OutputFormat format = OutputFormat.createPrettyPrint();
            XMLWriter output = new XMLWriter(new FileOutputStream(new File("d:\\test1.xml")), format);
            output.write(document);
            output.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}