com.lorne.weixin.pay.util.XMLParser Maven / Gradle / Ivy

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package com.lorne.weixin.pay.util;

import org.apache.commons.io.IOUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;

/**
 * User: rizenguo
 * Date: 2014/11/1
 * Time: 14:06
 */
public class XMLParser {

  
    public static Map getMapFromXML(String xmlString) throws ParserConfigurationException, IOException, SAXException {

        //这里用Dom的方式解析回包的最主要目的是防止API新增回包字段
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        InputStream is =  IOUtils.toInputStream(xmlString);
        Document document = builder.parse(is);
        //获取到document里面的全部结点
        NodeList allNodes = document.getFirstChild().getChildNodes();
        Node node;
        Map map = new HashMap();
        int i=0;
        while (i < allNodes.getLength()) {
            node = allNodes.item(i);
            if(node instanceof Element){
                map.put(node.getNodeName(),node.getTextContent());
            }
            i++;
        }
        return map;

    }


}