Insert new element to an XML file using SAX Filter

Question

I have an XMl file that looks like:

  
    2
    

        

Answer 1

Using @Jorn Horstmann's (http://stackoverflow.com/users/139595/jorn-horstmann) answer from above you can easily add the missing elements. But to write the results to an XML file you should use the TransformerHandler.

Just create a very basic ContentHandler and use it instead of the DefaultHandler. In the ContentHandler you can implement all the basic functions (startDocument, startElement etc.) and add every element to a new Transformer. e.g. In your startDocument function:

Transformer t = hd.getTransformer();
t.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
t.setOutputProperty(OutputKeys.METHOD, "xml");
t.setOutputProperty(OutputKeys.INDENT, "yes");
hd.startDocument();

And then (in each other function) add this: e.g. for startElement:

hd.startElement(uri,localName,name,attributes);

Finally you can write all this to a file in the endDocument method.