// 用递归方法遍历DOM树
    public void GetElement(NodeList nodelist) {
        Node cnode;
        int i;
        String str;
        int len;

        if (nodelist.getLength() == 0) {
            return;
        }
        for (i = 0; i < nodelist.getLength(); i++) {
            cnode = nodelist.item(i);
            if (cnode.getNodeType() == 1) {
                if(cnode.hasChildNodes()){
                    NodeList childlist = cnode.getChildNodes();
                    if(childlist.item(i).getNodeType()==Node.ENTITY_NODE){
                        String stringLetter=cnode.getNodeName().substring(0, 1).toUpperCase();    
                        String setName="set"+ stringLetter + cnode.getNodeName().substring(1);
//                        Method setMethod=fs.getMethod(setName, cnode.getNodeType());    
                    }
                }
                GetElement(cnode.getChildNodes());
            } else if (cnode.getNodeType() == 3) {
                str = cnode.getNodeValue();
                len = str.length();
                if (len > 1){
                    String fieldName = cnode.getParentNode().getNodeName();
                    String stringLetter=fieldName.substring(0, 1).toUpperCase();    
                    String setName="set"+stringLetter+fieldName.substring(1);    
                    Field[] fields1=head.getDeclaredFields();    
                    Field[] fields2=msg.getDeclaredFields();
                    for (int j = 0; j < fields1.length; j++) {
                        if(fields1[j].getName()==fieldName){
                            try {
                                Method setMethod = head.getMethod(setName, fields1[j].getType().getClass());
                                setMethod.invoke(head, str);
                            } catch (SecurityException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            } catch (IllegalArgumentException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            } catch (NoSuchMethodException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            } catch (IllegalAccessException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            } catch (InvocationTargetException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }
                        }
                    }
                
                    for (int j = 0; j < fields2.length; j++) {
                        if(fields2[j].getName()==fieldName){
                            try {
                                Method setMethod = msg.getMethod(setName, fields2[j].getType().getClass());
                                setMethod.invoke(msg, str);
                            } catch (SecurityException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            } catch (IllegalArgumentException e) {
                                // TODO Auto-generated catch block