将图像表单 clj-http 请求保存到文件 [英] Saving an image form clj-http request to file

问题描述

我正在尝试保存使用 clj-http

我有以下代码:

(def test-file
  (cl/get "http://placehold.it/350x150"))

(defn write-file []
   (with-open [w (clojure.java.io/writer  "test-file.gif" :append true)]
(.write w (:body test-file))))

当我尝试将其作为字节数组时，出现异常:

and when I try to make it as a byte-array, I get an exception:

       user=>     (def test-file
                    (cl/get "http://placehold.it/350x150" {:as :byte-array}))
       #'user/test-file
       user=> (write-file)
       IllegalArgumentException No matching method found: write for class java.io.BufferedWriter  clojure.lang.Reflector.invokeMatchingMethod (Reflector.java:79)

帮助！

推荐答案

使用二进制输出.

(def test-file
  (client/get "http://placehold.it/350x150" {:as :byte-array}))

(defn write-file []
   (with-open [w (java.io.BufferedOutputStream. (java.io.FileOutputStream. "test-file.gif"))]
     (.write w (:body test-file))))

输出流更好:

(defn write-file []
   (with-open [w (clojure.java.io/output-stream "test-file.gif")]
     (.write w (:body test-file))))

更新:

优雅的方式:

(clojure.java.io/copy
 (:body (client/get "http://placehold.it/350x150" {:as :stream}))
 (java.io.File. "test-file.gif"))

这篇关于将图像表单 clj-http 请求保存到文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！