XML格式化及解析

XML格式化工具：notepad++   下载地址 http://rj.baidu.com/soft/detail/13478.html?ald    一个教程地址：http://jingyan.baidu.com/album/4b07be3c69172648b380f383.html

一个很好的notepad教程地址： http://www.crifan.com/files/doc/docbook/rec_soft_npp/release/htmls/npp_func_add_comment.html

一个解析xml 成map的简单的工具类，只支持如下如下格式化的xml

 <object>
     <栏目>李树鹏</栏目>
     <request_day>22</request_day>
     <day>22</day>
     <name>tttt</name>
 </object>

XMLValueObject类的全部代码：

 import java.io.StringReader;
 import java.util.ArrayList;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import org.apache.commons.lang.StringUtils;
 import org.apache.log4j.Logger;
 import org.dom4j.Document;
 import org.dom4j.DocumentException;
 import org.dom4j.DocumentHelper;
 import org.dom4j.Element;
 import org.dom4j.io.SAXReader;

 public class XMLValueObject implements java.io.Serializable {

     private static final long serialVersionUID = -3163892375347045824L;

     private static Logger logger = Logger.getLogger(XMLValueObject.class);

     private Map<String, List<String>> map;

     public XMLValueObject() {
         map = new LinkedHashMap<String, List<String>>();
     }

     public void put(String key, String value) {
         if (value == null) {
             return;
         }

         List<String> list = map.get(key);
         if (list == null) {
             list = new ArrayList<String>();
             map.put(key, list);
         }
         list.removeAll(list);
         list.add(value);
     }

     public void put(String key, String[] values) {
         if (values == null || values.length == 0) {
             return;
         }

         List<String> list = map.get(key);
         if (list == null) {
             list = new ArrayList<String>();
             map.put(key, list);
         }
         for (String value : values) {
             list.add(value);
         }
     }

     public Object get(String key) {
         List<String> list = map.get(key);
         return list == null || list.isEmpty() ? null : list.get(0);
     }

     public Object[] getArray(String key) {
         List<String> list = map.get(key);
         return list == null ? new String[0] : list.toArray(new String[0]);
     }

     @SuppressWarnings("unchecked")
     public void fromXML(String xml) {
      try{
          if (StringUtils.isEmpty(xml)) {
              return;
          }
         StringReader in = new StringReader(xml);
         SAXReader reader = new SAXReader(false);
         Document doc = null;
         try {
             doc = reader.read(in);
         }
         catch (DocumentException e) {
             logger.error("Could not read XML[" + xml + "]", e);
         }
         finally {
             in.close();
         }

         Element root = doc.getRootElement();
         List<Element> children = (List<Element>) root.elements();
         for (Element child : children) {
             put(child.getName(), child.getText());
         } 

      }catch(Exception e)
      {
          //System.out.print("错误"+e.getMessage()+"："+xml);
          e.printStackTrace();
      }

     }

     public String toXML() {
         Document doc = DocumentHelper.createDocument();
         Element root = doc.addElement("object");
         //root.addAttribute("class", XMLValueObject.class.getName());

         for (Map.Entry<String, List<String>> entry : map.entrySet()) {
             String key = entry.getKey();
             List<String> list = entry.getValue();

             for (String value : list) {
                 Element child = root.addElement(key);
                 child.addText(value);
             }
         }

         return doc.asXML();
     }

     public Map<String, List<String>> getMap() {
         return map;
     }

     public void setMap(Map<String, List<String>> map) {
         this.map = map;
     }
 }

测试代码：

 public static void main(String[] args) {
         XMLValueObject vo = new XMLValueObject();
         vo.fromXML("<object><栏目>李树鹏</栏目><request_day>22</request_day><day>22</day><name>tttt</name></object>");
         System.out.println(vo.get("栏目"));
         vo.put("temp", "1212");
         System.out.println(vo.toXML());
     }