http post请求erlang
问题描述：
我有几个功能可以执行HTTP POST / GET / HEAD请求。
I have a couple of functions that perform HTTP POST/GET/HEAD requests.
对于POST请求，我使用：
For the POST request I use this:
http:request(post, {Url, [], ContentType, Body}, [], []).
对于HEAD / GET，我使用：
While for the HEAD/GET I use:
http:request(Method, {Url, []}, [], [])
如何将这两个电话写入独一无二的电话？ POST请求具有关于GET / HEAD请求的两个附加变量。我尝试用空列表，但我得到：
How can I write this two calls in a unique one? POST request has those two additional variables with respect to GET/HEAD request. I tried with empty lists but I got:
** exception error: no function clause matching
非常感谢
答
要使用 httpc 调用一次，您需要从调用中提取 Request 元组，因为这是独特的使用它们的方法：
To use the call to httpc only once, you need to extract the Request tuple from the call because that's what's unique between the methods as you use them:
post(URL, ContentType, Body) -> request(post, {URL, [], ContentType, Body}).
get(URL) -> request(get, {URL, []}).
head(URL) -> request(head, {URL, []}).
request(Method, Request) ->
httpc:request(Method, Request, [], []).