java之XML

 //转为XML格式
     public static String ArrayToXml(Map<String, String> arr) {
         String xml = "<xml>";
         Iterator<Entry<String, String>> iter = arr.entrySet().iterator();
         while (iter.hasNext()) {
             Entry<String, String> entry = iter.next();
             String key = entry.getKey();
             String val = entry.getValue();
             if (IsNumeric(val)) {
                 xml += "<" + key + ">" + val + "</" + key + ">";
             } else
                 xml += "<" + key + "><![CDATA[" + val + "]]></" + key + ">";
         }
         xml += "</xml>";
         return xml;
     }

     public static boolean IsNumeric(String str) {
         if (str.matches("\\d *")) {
             return true;
         } else {
             return false;
         }
     }

 //解析XML
         private Map<String, String> doXMLParse(String xml)
                 throws XmlPullParserException, IOException {  

             InputStream inputStream = new ByteArrayInputStream(xml.getBytes());  

             Map<String, String> map = null;  

             XmlPullParser pullParser = XmlPullParserFactory.newInstance()
                     .newPullParser();  

             pullParser.setInput(inputStream, "UTF-8");// 为xml设置要解析的xml数据  

             int eventType = pullParser.getEventType();  

             while (eventType != XmlPullParser.END_DOCUMENT) {
                 switch (eventType) {
                 case XmlPullParser.START_DOCUMENT:
                     map = new HashMap<String, String>();
                     break;  

                 case XmlPullParser.START_TAG:
                     String key = pullParser.getName();
                     if (key.equals("xml"))
                         break;
                     String value = pullParser.nextText();
                     map.put(key, value);
                     break;
                 case XmlPullParser.END_TAG:
                     break;
                 }
                 eventType = pullParser.next();
             }
             return map;
         }