Lein ring server 404 - clojure

Question

I am setting up a web application building a route and handler with Ring and Compojure. Every time I try lein ring server I get a 404 Not Found. But I should see
Edit
After starting the server I am asked by IE to open or save the file. But Windows is not able to read the JSON file.
My project.clj looks like
(defproject web-viz
:dependencies [[org.clojure/clojure "1.4.0"]
[ring/ring-core "1.1.7"]
[ring/ring-jetty-adapter "1.1.7"]
[compojure "1.1.3"]
[hiccup "1.0.2"]]
:plugins [[lein-ring "0.8.3"]]
:ring {:handler web-viz.web/app})
and inside the src I have a file web.clj
(ns web-viz.web
(: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)]))
(defroutes site-routes
(GET "/" [] (redirect "/data/census-race.json"))
(route/resources "/")
(route/not-found "Page not found"))
(def app (-> (handler/site site-routes)
(wrap-file "resources")
(wrap-file-info)
(wrap-content-type)))

Answer 1

There should be a file with the content above located at
web-viz/resources/public/data/census-race.json

Answer 2

You project is working for me. Here is how I structured the project
.
├── project.clj
├── resources
│   └── data
│   └── census-race.json
└── src
└── web_viz
└── web.clj

Answer 3

I don't see anything obviously wrong but the following looks unusual:
(def app (-> (handler/site site-routes)
(wrap-file "resources")
(wrap-file-info)
(wrap-content-type)))
From https://stackoverflow.com/a/22788463/894091:
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.
See if the following does the trick:
(def app
(handler/site app-routes))