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Clojure,Compojure:读取Post请求原始Json

compojure-api compojure clojure

0

Srini · 技术社区 · 8 年前

我能够读取Post请求的原始JSON。但我不确定我做得对不对?

(ns clojure-dauble-business-api.core
  (:require [compojure.api.sweet :refer :all]
            [ring.util.http-response :refer :all]
            [clojure-dauble-business-api.logic :as logic]
            [clojure.tools.logging :as log]
            [clojure-dauble-business-api.domain.artwork])
  (:import [clojure_dauble_business_api.domain.artwork Artwork]))

(defapi app
  (GET "/hello" []
    (log/info "Function begins from here")
    (ok {:artwork (logic/artwork-id 10)}))
  (POST "/create" params
   (log/info "Create - Function begins from here and body" (:name (:artwork (:params params))))
   (ok {:artwork (logic/create-city (:name (:artwork (:params params))))})))

POST请求的原始JSON

{
  "artwork": {
    "id": 10,
    "name": "DEFAULT"
  }
}

(:name (:artwork (:params params))) 从上述原始Json获取“name”值。

如果我做得不对,请指导我什么是正确的方式?

2 回复 | 直到 8 年前

1

4

Scott 8 年前

如果我正确理解了你的问题,那么看起来你是在问是否有更“合适”的方法来获取信息 :name

检索值,例如从嵌套的关联结构(哈希映射)中,可以使用 get-in

(get-in params [:params :artwork :name])

这更整洁、更容易阅读(从左到右),嵌套更少,但它也是尝试获取值的更安全的方法,因为 上车 nil 如果在键序列中找不到键。

2

1

Tommi Reiman 8 年前

你似乎在使用 compojure-api :body 或 :body-params

下面是一个带有 Leiningen :

lein new compojure-api artwork
cd artwork

src/artwork/handler.clj 进入:

(ns artwork.handler
  (:require [compojure.api.sweet :refer :all]
            [ring.util.http-response :refer :all]
            [schema.core :as s]))

;; define a Schema for validation
(s/defschema Artwork
  {:id Long
   :name String})

;; dummy ring-api with swagger-docs
(def app
  (api
    {:swagger
     {:ui "/"
      :spec "/swagger.json"
      :data {:info {:title "Artwork"
                    :description "Lovely artwork api"}
             :tags [{:name "api", :description "some apis"}]}}}

    (context "/api" []
      :tags ["api"]

      ;; endpoint with Schema coercion
      (POST "/create" []
        :return Artwork
        :body [body Artwork]
        :summary "creates artwork"
        (ok body)))))

然后运行 lein ring server 从命令行。您应该会看到一个招摇的ui,其中有一个端点,消费 Artwork

希望这有帮助。