java 转换xml json

package com.shine.framework.core.util;    import java.io.ByteArrayOutputStream;  import java.util.ArrayList;  import java.util.HashMap;  import java.util.Iterator;  import java.util.List;  import java.util.Map;    import net.sf.json.JSON;  import net.sf.json.JSONSerializer;  import net.sf.json.xml.XMLSerializer;    import org.dom4j.Document;  import org.dom4j.DocumentHelper;  import org.dom4j.Element;  import org.dom4j.io.OutputFormat;  import org.dom4j.io.XMLWriter;    /**  * common xml conver utility  *   * @author [e-mail]  * @version Framework 2010.10.26  * @url http://blog.csdn.net/arjick/article/details/6251777  */  public class XmlConverUtil {      /**      * map to xml xml <node><key label="key1">value1</key><key      * label="key2">value2</key>......</node>      *       * @param map      * @return      */      public static String maptoXml(Map map) {          Document document = DocumentHelper.createDocument();          Element nodeElement = document.addElement("node");          for (Object obj : map.keySet()) {              Element keyElement = nodeElement.addElement("key");              keyElement.addAttribute("label", String.valueOf(obj));              keyElement.setText(String.valueOf(map.get(obj)));          }          return doc2String(document);      }        /**      * list to xml xml <nodes><node><key label="key1">value1</key><key      * label="key2">value2</key>......</node><node><key      * label="key1">value1</key><key      * label="key2">value2</key>......</node></nodes>      *       * @param list      * @return      */      public static String listtoXml(List list) throws Exception {          Document document = DocumentHelper.createDocument();          Element nodesElement = document.addElement("nodes");          int i = 0;          for (Object o : list) {              Element nodeElement = nodesElement.addElement("node");              if (o instanceof Map) {                  for (Object obj : ((Map) o).keySet()) {                      Element keyElement = nodeElement.addElement("key");                      keyElement.addAttribute("label", String.valueOf(obj));                      keyElement.setText(String.valueOf(((Map) o).get(obj)));                  }              } else {                  Element keyElement = nodeElement.addElement("key");                  keyElement.addAttribute("label", String.valueOf(i));                  keyElement.setText(String.valueOf(o));              }              i++;          }          return doc2String(document);      }        /**      * json to xml {"node":{"key":{"@label":"key1","#text":"value1"}}} conver      * <o><node class="object"><key class="object"      * label="key1">value1</key></node></o>      *       * @param json      * @return      */      public static String jsontoXml(String json) {          try {              XMLSerializer serializer = new XMLSerializer();              JSON jsonObject = JSONSerializer.toJSON(json);              return serializer.write(jsonObject);          } catch (Exception e) {              e.printStackTrace();          }          return null;      }        /**      * xml to map xml <node><key label="key1">value1</key><key      * label="key2">value2</key>......</node>      *       * @param xml      * @return      */      public static Map xmltoMap(String xml) {          try {              Map map = new HashMap();              Document document = DocumentHelper.parseText(xml);              Element nodeElement = document.getRootElement();              List node = nodeElement.elements();              for (Iterator it = node.iterator(); it.hasNext();) {                  Element elm = (Element) it.next();                  map.put(elm.attributeValue("label"), elm.getText());                  elm = null;              }              node = null;              nodeElement = null;              document = null;              return map;          } catch (Exception e) {              e.printStackTrace();          }          return null;      }        /**      * xml to list xml <nodes><node><key label="key1">value1</key><key      * label="key2">value2</key>......</node><node><key      * label="key1">value1</key><key      * label="key2">value2</key>......</node></nodes>      *       * @param xml      * @return      */      public static List xmltoList(String xml) {          try {              List<Map> list = new ArrayList<Map>();              Document document = DocumentHelper.parseText(xml);              Element nodesElement = document.getRootElement();              List nodes = nodesElement.elements();              for (Iterator its = nodes.iterator(); its.hasNext();) {                  Element nodeElement = (Element) its.next();                  Map map = xmltoMap(nodeElement.asXML());                  list.add(map);                  map = null;              }              nodes = null;              nodesElement = null;              document = null;              return list;          } catch (Exception e) {              e.printStackTrace();          }          return null;      }        /**      * xml to json <node><key label="key1">value1</key></node> 转化为      * {"key":{"@label":"key1","#text":"value1"}}      *       * @param xml      * @return      */      public static String xmltoJson(String xml) {          XMLSerializer xmlSerializer = new XMLSerializer();          return xmlSerializer.read(xml).toString();      }        /**      *       * @param document      * @return      */      public static String doc2String(Document document) {          String s = "";          try {              // 使用输出流来进行转化               ByteArrayOutputStream out = new ByteArrayOutputStream();              // 使用UTF-8编码               OutputFormat format = new OutputFormat("   ", true, "UTF-8");              XMLWriter writer = new XMLWriter(out, format);              writer.write(document);              s = out.toString("UTF-8");          } catch (Exception ex) {              ex.printStackTrace();          }          return s;      }  } 

转载自:http://blog.csdn.net/arjick/article/details/6251777