Serving data with Ring and Compojure - json

Question

I am configuring and setting up a web application to serve the JSON data http://www.ericrochester.com/clj-data-analysis/data/census-race.json file statically.
My dependencies:
:dependencies [[org.clojure/clojure "1.5.1"]
[org.clojure/clojurescript "0.0-2197"]
[ring/ring-core "1.1.7"]
[ring/ring-jetty-adapter "1.1.7"]
[compojure "1.1.3"]
[hiccup "1.0.2"]
[lein-cljsbuild "0.2.10"]]
As the title says I'm using Ring as a development plugin, i.e.
:plugins [[lein-ring "0.8.3"]]
The Leiningen project is
(ns test-app.core
(:require [compojure.route :as route]
[compojure.handler :as handler]
[clojure.string :as str])
(:use compojure.core
ring.adapter.jetty
[ring.middleware.content-type :only
(wrap-content-type)]
[ring.middleware.file :only (wrap-file)]
[ring.middleware.file-info :only
(wrap-file-info)]
[ring.middleware.stacktrace :only
(wrap-stacktrace)]
[ring.util.response :only (redirect)]))
and in the project.clj
:ring {:handler test-app.core/app}
which I am not sure if this will tell Ring where the web application
is.
Moreover, I am not sure how to serve the JSON data file statically. I have read that "Ring serves static files out of the /resources directory of your project. In this case, create the directory /resources/data and put the data file that you downloaded from http://www.ericrochester.com/clj-data-analysis/data/census-race.json into it."
It is mostly this last part about creating the /resources/data directory where I am lost in the implementation. Could someone show how this part is done?
If I can learn to get past this I am looking to build routes and handlers, i.e.
(defroutes site-routes
(GET "/" [] (redirect "/data/census-race.json"))
(route/resources "/")
(route/not-found "Page not found"))
and
(def app
(-> (handler/site site-routes)
(wrap-file "resources")
(wrap-file-info)
(wrap-content-type)))

Answer 1

and in the project.clj
:ring {:handler test-app.core/app}
which I am not sure if this will tell Ring where the web application
is.
When you run $ lein ring server-headless it will look for app in the test-app.core namespace. You should have something like the following in your core.clj file:
(def app
(handler/site app-routes))
It is mostly this last part about creating the /resources/data
directory where I am lost in the implementation. Could someone show
how this part is done?
In the root of your project directory you should have a resources folder. Create a data folder inside the resources folder.
I'm not sure what problem you're having?

Answer 2

If your project looks like this:
project.clj
src/test_app/core.clj
resources/public/data/census-race.json
Then the your site-routes handler will serve up that JSON file when you request the path /data/census-race.json.
You don't need any of the extra middleware like wrap-file, wrap-file-info, or wrap-content-type, since compojure.route/resources already does everything you need.