**解析各類xml爲map工具類**

解析xml工具類

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;


/**
 * 解析微信支付寶返回的xml
 * @author szb
 * 2017.08.02
 */
public class XMLUtil4jdom {

    /** 
     * 解析xml,返回第一級元素鍵值對。如果第一級元素有子節點，則此節點的值是子節點的xml數據。 
     * @param strxml 
     * @return 
     * @throws JDOMException 
     * @throws IOException 
     */  
    public static Map<String, String> doXMLParse(String strxml) throws JDOMException, IOException {  
        strxml = strxml.replaceFirst("encoding=\".*\"", "encoding=\"UTF-8\"");  
        if(null == strxml || "".equals(strxml)) {
            return null;  
        }
        Map<String, String> m = new HashMap<String, String>(); 
        InputStream in = new ByteArrayInputStream(strxml.getBytes("UTF-8"));  
        SAXBuilder builder = new SAXBuilder();  
        Document doc = builder.build(in);  
        Element root = doc.getRootElement();  
        List list = root.getChildren();  
        Iterator it = list.iterator();  
        while(it.hasNext()) {  
            Element e = (Element) it.next();  
            String k = e.getName();  
            String v = "";  
            List children = e.getChildren();  
            if(children.isEmpty()) {  
                v = e.getTextNormalize();  
            } else {  
                v = XMLUtil4jdom.getChildrenText(children);  
            }  
            m.put(k, v);  
        }  
        //關閉流  
        in.close();  
        return m;  
    }  

    /** 
     * 獲取子結點的xml 
     * @param children 
     * @return String 
     */  
    public static String getChildrenText(List children) {  
        StringBuffer sb = new StringBuffer();  
        if(!children.isEmpty()) {  
            Iterator it = children.iterator();  
            while(it.hasNext()) {  
                Element e = (Element) it.next();  
                String name = e.getName();  
                String value = e.getTextNormalize();  
                List list = e.getChildren();  
                sb.append("<" + name + ">");  
                if(!list.isEmpty()) {  
                    sb.append(XMLUtil4jdom.getChildrenText(list));  
                }  
                sb.append(value);  
                sb.append("</" + name + ">");  
            }  
        }  

        return sb.toString();  
    }  


    public static SortedMap<Object,Object> getMap(HttpServletRequest request,HttpServletResponse response)throws Exception{
        //讀取參數  
           InputStream inputStream ;  
           StringBuffer sb = new StringBuffer();  
           inputStream = request.getInputStream();  
           String s ;  
           BufferedReader in = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));  
           while ((s = in.readLine()) != null){  
               sb.append(s);
           }
           in.close();
           inputStream.close();
           //解析xml成map  
           Map<String, String> m = new HashMap<String, String>();  
           m = XMLUtil4jdom.doXMLParse(sb.toString());  
           //過濾空 設置 TreeMap  
           SortedMap<Object,Object> packageParams = new TreeMap<Object,Object>();        
           Iterator it = m.keySet().iterator();  
           while (it.hasNext()) {  
               String parameter = (String) it.next();
               String parameterValue = m.get(parameter);

               String v = "";  
               if(null != parameterValue) {
                   v = parameterValue.trim();  
               }  
               packageParams.put(parameter, v);  
           }  

        return packageParams;
    }

}