java转换xml、list、map和json.doc

很多朋友遇到xml，map和json互转的问题，在开发中xml和json越来越重要了。我就把我的工具类贴上来。
HYPERLINK"http://json-lib.sourceforge.net/"json-lib依赖包：
commons-beanutils-1.8.0.jar
commons-collections-3.2.1.jar
commons-lang-2.4.jar
commons-logging-1.1.1.jar
ezmorph-1.0.6.jar
json-lib-2.3-jdk15.jar
xom-1.2.2.jar
以上的包不能缺少否则出现运行错误
packagecom.shine.framework.core.util;

importjava.io.ByteArrayOutputStream;
importjava.util.ArrayList;
importjava.util.HashMap;
importjava.util.Iterator;
importjava.util.List;
importjava.util.Map;

importnet.sf.json.JSON;
importnet.sf.json.JSONSerializer;
importnet.sf.json.xml.XMLSerializer;

importorg.dom4j.Document;
importorg.dom4j.DocumentHelper;
importorg.dom4j.Element;
importorg.dom4j.io.OutputFormat;
importorg.dom4j.io.XMLWriter;

/**
*commonxmlconverutility
*
*@[e-mail]
*@versionFramework2010.10.26
*/
publicclassXmlConverUtil{
/**
*maptoxmlxml<node><keylabel="key1">value1</key><key
*label="key2">value2</key>......</node>
*
*@parammap
*@return
*/
publicstaticStringmaptoXml(Mapmap){
Documentdocument=DocumentHelper.createDocument();
ElementnodeElement=document.addElement("node");
for(Objectobj:map.keySet()){
ElementkeyElement=nodeElement.addElement("key");
keyElement.addAttribute("label",String.valueOf(obj));
keyElement.setText(String.valueOf(map.get(obj)));
}
returndoc2String(document);
}

/**
*listtoxmlxml<nodes><node><keylabel="key1">value1</key><key
*label="key2">value2</key>......</node><node><key
*label="key1">value1</key><key
*label="key2">value2</key>......</node></nodes>
*
*@paramlist
*@return
*/
publicstaticStringlisttoXml(Listlist){
Documentdocument=DocumentHelper.createDocument();
ElementnodesElement=document.addElement("nodes");
for(Objecto:list){
ElementnodeElement=nodesElement.addElement("node");
for(Objectobj:((Map)o).keySet()){
ElementkeyElement=nodeElement.addElement("key");
keyElement.addAttribute("label",String.valueOf(obj));
keyElement.setText(String.valueOf(((Map)o).get(obj)));
}
}
returndoc2String(document);
}

/**
*jsontoxml{"node":{