Clojure：两步发送iOS推送通知（apns）

首先在project.clj中，添加对notnoop 类库的引用：[com.notnoop.apns/apns "0.2.3"]

然后使用如下方法就可以发送推送消息了：

(ns demo.apns
  (:import (com.notnoop.apns APNS)))

(defn send-push-notification
  [device-tokens message]
  (loop [rest-device-tokens device-tokens
         sent-count 0]
    (if (empty? rest-device-tokens)
      sent-count
      (do
        (let [service (.build (.withSandboxDestination
                                (.withCert (APNS/newService)
                                           "resources/demo.p12"
                                           "password")))
              payload (.build (.alertBody (APNS/newPayload) message))]
          (.push service (first rest-device-tokens) payload))
        (recur (rest rest-device-tokens) (inc sent-count))))))

调用方法如下：

(send-push-notification [“token1” “token2” …] “test message”)

需要注意证书必须为p12格式（可以通过KeyChain Access软件转换）