(java) from JTree to XML

Question

I want to do exactly what was asked here : Convert JTree to XML And the answer he got was nice BUT when I try do use it I got a INVALID_CHARACTER_ERR.

Here is an example of a XML file I have put in a JTree :

<?xml version="1.0"?>
<company0>
<staff id="1001">
    <firstname>yong</firstname>
    <lastname>mook kim</lastname>
    <nickname>mkyong</nickname>
    <salary>100000</salary>
    </staff>
    <staff id="2001">
    <firstname>low</firstname>
    <lastname>yin fong</lastname>
    <nickname>fong fong</nickname>
        <salary>200000</salary>
    </staff>
</company0>

And I'd like to make a function that returns a string (or directly a XML file) that returns the contents of the JTree.

How could I do that ?

Answer 1

your 'createTree' should probably look like this:

private static Element createTree(Document doc, TreeModel model, Object node) {
        Element el = doc.createElement(node.toString());
        for(int i=0;i<model.getChildCount(node);i++){
                DefaultMutableTreeNode child = (DefaultMutableTreeNode)model.getChild(node, i);
        if (child.isLeaf()) {
                    el.setTextContent(child.toString());
         } else {
                    el.appendChild(createTree(doc,model,child));
        }
    }
    return el;
}

Because the original createTree converts node values to elements as there was a check (in the if condition above) missing