如何获取xml文件中某个节点的值？

[Destiny_0311]

RT

[butnet]

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;


public class XmlTest {
	/**
	 * @author butnet
	 * @param args
	 * @throws DocumentException 
	 */
	public static void main(String[] args) throws DocumentException {
		Document doc = DocumentHelper.parseText("<user><name>butnet</name><web>http://jvmer.com</web></user>");
		Element user = doc.getRootElement();
		Element name = user.element("name");
		Element web = user.element("web");
		
		System.out.println(name.getText());
		System.out.println(web.getText());
	}
}

/*使用DOM4J可以很方便的对XML进行读写, 项目地址  http://dom4j.sourceforge.net/  */

[xulin5215511]

dom4j 是很很强大，还有更强大的，xpath，它和正则类似，可以获取任意节点，有兴趣看看

[Luger]

在网上查查 java 解析 xml 很多例子的

[aries90]

package com.anxin.dod;

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

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

import com.anxin.beans.*;

public class Login {
public static String saveXmlFilePath;
T_yonghu c=new T_yonghu();
//SAXReader reader=new SAXReader();//构建sax读取对象
List<T_yonghu> list = new ArrayList<T_yonghu>();


public T_yonghu readXML(String yhmc,String yhma,String path) throws IOException{

Document doc=(Document) Login.getXmlDocument(path);
Element ele=doc.getRootElement();

List eles=ele.elements("用户");

//System.out.println("根节点:"+ele.getName());
//Iterator it=root.elementIterator();//获取根节点下面的所有子节点

for(Iterator childs=eles.iterator();childs.hasNext();){

Element el = (Element)childs.next();
//System.out.println("yonghu:"+el.getText());
// System.out.println("yonghu:"+el.attributeValue("用户密码"));
if(yhmc.equals(el.getText()) && yhma.equals(el.attributeValue("用户密码")))

{ c.setYhmc(el.getText());
//c.setYhma(el.element("用户名称").attributeValue("用户密码"));
c.setYhsf(el.attributeValue("用户身份"));
c.setId(el.attributeValue("id"));
//list.add(c);
}

}
return c;
}


public static Document getXmlDocument(String saveXmlFilePath){

setSaveXmlFilePath(saveXmlFilePath);

SAXReader reader = new SAXReader();

Document doc = null;

try {

doc = reader.read(new File(saveXmlFilePath));

}finally{

return doc;

}

}



public static void saveDocument(Document doc) throws IOException{

OutputFormat format = OutputFormat.createPrettyPrint();

XMLWriter writer = new XMLWriter(new FileOutputStream(saveXmlFilePath),format);

writer.write(doc);

writer.close();

}


public static String getSaveXmlFilePath() {

return saveXmlFilePath;

}



public static void setSaveXmlFilePath(String saveXmlFilePath) {

Login.saveXmlFilePath = saveXmlFilePath;

}
}

[aries90]

<?xml version="1.0" encoding="UTF-8"?>

<用户信息>
<用户 用户密码="1" 用户身份="超级管理员" id="2">admin</用户>
<用户 用户密码="1" 用户身份="管理员" id="2">admin1</用户>
<用户 用户密码="2" 用户身份="供应商" id="3">yh</用户>
</用户信息>