Clojure web application - where do I start?

Question

So lately I\'ve been looking into Clojure, and I love the language. I would like to see if I can make a small web application in it, just to challenge myself. However, I have ab

Answer 1

A really simple way to get started is to make a servlet that runs on Tomcat or similar, for example:

(ns servlet
((:gen-class :extends javax.servlet.http.HttpServlet))

(defn -doGet
  [_ request response]
  (.setContentType response "text/html")
  (let w (.getWriter response)]
      (.println w
        (str ""
          ""
          ""
          ""
          ""
          "
Hello "
          (.getParameter request "Name")
          "
"
          ""
          ""))))

(defn -doPost [_ request response]
  (-doGet nil request response)) 

then create a web.xml in your WEB-INF folder

Clojure Servlet


hello
servlet


hello
/hello


index.html

compile and package this into a war, and it'll behave just like a regular Java servlet. To deploy on Tomcat, simply drop the war in the webapps folder and start tomcat.

A detailed example is available here http://github.com/yogthos/clojure-maven-examples