Problem with selectNodes() in dom4j & jboss

Question

Hi,
Iam facing some problem in parsing an xml file.
The xml file is parsed perfectly and iam able to display the data inside it also using the rootelement.
when iam calling selectNodes(Xpath expression), iam getting a ClassNotFoundException. i pasted Dom4j1.6.8.jar and jaxen-full.jar in JBoss server lib.
Then also the problem is not solved. Here is my java file method, XML file and Exception.
public static HashMap getDBConfigurtion() throws DAOException{
            XMLConfig xmlMain = new XMLConfig();
         String str = "../../../xml/config/config.xml";
        Document document = null;
        try {
          System.out.println("Inside GetDBConfiguration Try .. Before parse");
            document = xmlMain.parse(str);
              System.out.println("INSIDE TRY AFTR DOC.. Nodes no.."+ document.nodeCount()+"Node Type is.."+document.getNodeType());
            //HashMap hash=new HashMap();
            //hash=document.
            return xmlMain.getConfig(document);
         } catch (Exception e) {
             throw new DAOException("Excepiton in getDBConfiguration",e,false);
public Document parse(String url) throws DocumentException {
        SAXReader reader = new SAXReader();
        Document document = reader.read(url);
        return document;
    public HashMap getConfig(Document document) throws DocumentException {
      //read the datasources
         System.out.println("XML CONFIG:: getConfig");/////////////////this is printed
        List lisNodes =  (List) document.selectNodes("//dbconfig/dbparams/datasources/datasource");//////////////ERROR HERE -NOT EXECUTED
        System.out.println("After selectNodes..size is"+lisNodes);
        for(int i=0;i<lisNodes.size();i++)
             System.out.println("In for"+lisNodes.get(i));
        HashMap hmDataSources = new HashMap();
        for (Iterator iter = lisNodes.iterator(); iter.hasNext(); ) {
           Node n = (Node)iter.next();
           System.out.println("Node is.."+n.getName());
           hmDataSources.put(n.valueOf("@id"), n.getText());
           System.out.println("Datasources id:"+ n.valueOf("@id")+": Text :" + n.getText());
/* begin config.xml*/
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE dbconfig SYSTEM "dbconfig.dtd">
<dbconfig>
     <dbparams>
          <datasources>
               <datasource Id="dsmysql">java:/MySQLDB</datasource>
          </datasources>
          <sqlproperties>
               <sqlproperty id="maxfetchsize">10</sqlproperty>
               <sqlproperty id="restrictchars">x</sqlproperty>
               <sqlproperty id="deleteAllowed">false</sqlproperty>
          </sqlproperties>
     </dbparams>
     <!-- specifies the sqlrepositories locations -->
     <sqlrepositorypath>
          <sqlrepository Id="id1">../../../xml/module1/selectsql.xml</sqlrepository>
     </sqlrepositorypath>
</dbconfig>
/*end of file config.xml */
Exception:-
java.lang.NoClassDefFoundError: org/dom4j/xpath/DefaultXPath
org.dom4j.DocumentFactory.createXPath(DocumentFactory.java:230)
org.dom4j.tree.AbstractNode.createXPath(AbstractNode.java:207)
org.dom4j.tree.AbstractNode.valueOf(AbstractNode.java:189)
com.tsd.common.XMLConfig.getDBConfigurtion(Unknown Source)
com.tsd.dao.DBDelegator.getSqlContext(Unknown Source)
com.tsd.dao.DBDelegator.invoke(Unknown Source)
BackingClass.display(Unknown Source)
UserBean.display(Unknown Source)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
please give me some idea to resolve this.

Answer 1

JBoss is using Dom4J for their own stuff: it probably supersedes your version. So you have to either:
* forget Dom4J and use JAXP, which is standard and offer all you need,
* replace Dom4J that ships with JBoss with yours (in JBOSS_ROOT/lib), but this might have adverse consequences