XML解析工具类

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这是一个接收xml格式的string，并进行解析的工具类。
注：该工具类参考了其他网友的代码，链接忘了。

package com.jackie.mytestproject.xmltest;

import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 * @author jackie
 *
 */
public class XMLBuilder {

	/** xml string */
    private String xmlStr=null;
    /** xml对应的document */
    private Document doc=null;
    /** xml根结点 */
    private Element root=null;
    
    /**
     *构造函数说明：       

     *参数说明：@param path   

     * @throws IOException 
     * @throws SAXException 
     * @throws ParserConfigurationException 
    **/
    public XMLBuilder(String xmlStr) throws ParserConfigurationException, SAXException, IOException
    {
        this.xmlStr=xmlStr;
        doc = getDocument(xmlStr);
        buildRoot();
    }
      
    public Document getDocument(String xml) throws ParserConfigurationException, SAXException, IOException {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		DocumentBuilder builder = factory.newDocumentBuilder();
		StringReader sr = new StringReader(xml);
		InputSource is = new InputSource(sr);
		Document doc = builder.parse(is);
        return doc;
    }
      
    /**
    * 方法名称：buildRoot

    * 方法功能：生成XML的根结点

    * 参数说明： 

    * 返回：void 

    **/
    private void buildRoot()
    {
        root=doc.getDocumentElement();
    }
    
    public NodeList getNodeList()
    {
        return root.getChildNodes();
    }
    
    public Element [] getElementsByName(String name)
    {
        List resList=new ArrayList();
        NodeList nl=getNodeList();
        for(int i=0;i 
 
 
 
测试类： 
 
 
 
package com.jackie.mytestproject.xmltest;

import org.w3c.dom.Element;

public class XMLBuilderTester {

	public static void main(String[] args) {
		try {
			StringBuffer sb = new StringBuffer();
			sb.append("");
			sb.append("");
			sb.append("");
			String xml = sb.toString();
			
			XMLBuilder xmlBl = new XMLBuilder(xml);
			Element[] eList = xmlBl.getElementsByName("Result");
			System.out.println(xmlBl.getElementValue(eList[0]));
			System.out.println(xmlBl.getElementAttr(eList[0], "attr"));
		} catch(Exception e) {
			e.printStackTrace();
		}
	}
}