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Home Backend Development Python Tutorial Clojure 适合个人用来做 Web 快速开发么?

Clojure 适合个人用来做 Web 快速开发么?

Jun 06, 2016 pm 04:24 PM
clojure lisp python web

Web 快速开发很多人用 Python 及其它动态语言,Clojure 作为 Lisp 的一种方言,也很灵活。那么它适合用来做 Web 快速开发么? 理由是什么?
相对比 Python,Clojure 又有什么优劣势?

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应该说还是蛮适合的。Clojure虽然历史不长但是支持web开发的"框架"[0]已经有了:Ring以及基于Ring的Compojure。Ring支持middleware机制(可以理解为插件),很多核心的功能都是通过middleware来实现的,比如session、cookie,params解析[1]等等,middleware机制使得你可以很轻松的向ring上面组装你需要的功能,比如这里[2]有一些已有的第三方的middleware。

对了Ring类库本身大量借鉴了Ruby里面的Rack、Python里面的WSGI特性,因此在快速开发方面不用担心。

虽然Clojure本身是JVM上面的语言,但是比Java爽的是,用Ring开发的代码你不需要任何特殊配置就可以做到:不管你是改html代码还是Clojure代码都是可以马上刷新就可以看到效果 —— 而不用重启服务器。这应该对于web开发速度比较重要的一个特性吧。

跟Python相比的缺点?一时还真的想不起来,可能我用的也不算多吧。这里是我晚上花了两个小时用Clojure写出来的东西,你可以感受一下: 公积金贷款计算器

[0] Clojure里面其实更喜欢叫类库,而不是框架,因为框架听起来是个很重的东西
[1] https://github.com/ring-clojure/ring/tree/master/ring-core/src/ring/middleware
[2] github.com/ring-clojure 开发还是很快的。rebajie.net 是我用clojure写的。这个是我用clojure写的blog 。。 github.com/baoliang/clo > 相对比 Python,Clojure 又有什么优劣势?

举例说明。
我前同事,原来专业写python的。后来因为clojure,到了我们公司,一直写clojure。他自己做的好几个项目都是Clojure写的。

我写Clojure2年多了,很喜欢这么语言,中间写过几个月python。这次到了新公司,公司大部分代码都是python+php。我就写python了。他们要我把服务搞快+稳定。python还是有点累,不过应该可以解决。

python应该还是一门不错的语言。Clojure更是。 很好用,可以开放端口,用来热调试,同时可以实现插件动态管理,开发流程很简单,快速,
(defn render-test [ret tmt]
  (-> (resp/response "------render----test------") 
    (#(resp/content-type %1 "text/plain"))))

(defn foo
  "I don't do a whole lot."
  [x]
  (str "来自源码目录的参数:" x))

(defn handler [^Integer x]
    {:$r render-test :text (str "hello world, road goes sucess!" (foo x))})

(defn home [req content ^Integer num]
    {:hiccup "home.clj" :content (str "home" content) :num num})

(defroad road (GET "/web-test-0.1.0-SNAPSHOT-standalone/main" handler) 
              (GET "/web-test-0.1.0-SNAPSHOT-standalone/home/:num{\\d+}" home))

(defn -main [& args]
  (log/info "---------log4j test-------")
  (jetty/run-jetty road {:port 3000}))
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