If you're confortable with XSL you can create a transformer and use Solr's XSLTResponseWriter to do the job.
http://wiki.apache.org/solr/XsltResponseWriter > Hi all, > > This list has proven itself quite useful since I got started with Solr. I'm > wondering if it is possible to dictate the XML that is returned by a > search? Right now it seems very inefficient in that it is formatted like: > > <str name="field1">Val</str> > <str name="field2">Val</str> > > Etc. > > I would like to change it so that it reads something like: > > <field1>Val</field1> > <field2>Val</field2> > > Is this possible? If so, how? > > Thanks, > > Brian Lamb