Axis2中的操作OMElement【取得某一个节点下的子节点】

private static OMElement value = null;
    public static OMElement getTheNodeValue(OMElement in, String nodeName)
    {
        try
        {
            Iterator desc = in.getChildElements();
            value = null;
            while (desc.hasNext())
            {
                OMElement element = (OMElement) desc.next();
                OMElement e = element
                        .getFirstChildWithName(new QName(nodeName));
                if (e == null && element.getQName().equals(new QName(nodeName)))
                {
                    e = element;
                }
                if (e != null)
                {
                    value = e.getFirstElement();
                    break;
                }
                else
                {
                    if (value == null)
                    {
                        getTheNodeValue(element, nodeName);
                    }
                }
            }

            return value;

        }
        catch (Exception e)
        {
            return null;
        }

    }