Ok, I see - you want to send a JSON Object which contains the query
parameters.
As far as I know, that's not possible out-of-the-box, so you'll have to
create a custom SearchHandler
http://lucene.apache.org/solr/4_1_0/solr-core/org/apache/solr/handler/component/SearchHandler.html
for
that.
In the
I'm not sure if I understood you..
You want to send a request like http://localhost/solr/select?
q=*:*&wt=json&start=0&fq=course_id:"18" and get back only parts of the
response for further processing?
Then the easiest way is to retrieve the whole json and post-process only
"responseHeader.params".