Clojure 将图像表单clj http请求保存到文件
我正在尝试保存使用下载的文件 我有以下代码:Clojure 将图像表单clj http请求保存到文件,clojure,Clojure,我正在尝试保存使用下载的文件 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)))) 当我尝试将其设置为字节数组时,会出现一个异常: user=>
(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))))
当我尝试将其设置为字节数组时,会出现一个异常:
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)
救命啊 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))))
编辑:
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"))
更重要的是,writer.write需要char[]和outputstream.write需要byte[],但您可能应该使用clojure.java.io/output-stream虽然您可以使用clj http,但这完全可以通过clojure.java.io完成: