Detecting query errors with SolrJ

[Shawn Heisey]

When doing Solr queries in a browser, it's pretty easy to see an HTTP 
error status and read the reason, but I would like to do the same thing 
in a deterministic way with SolrJ.  Can anyone point me to examples that 
show how to retrieve the HTTP status code and the reason for the error?  
I would like to inform the end user that there was a problem and offer 
ideas about how they might be able to fix it, rather than simply show an 
empty result grid.

Thanks,
Shawn