Question

我正在尝试使用Erlang将数据发布到我的webservice，但是这段代码没有编译并抛出错误：

calling** exception exit: {noproc,
                {gen_server,call,
                 [httpc_manager,
                  {request,
                   {request,undefined,<0.107.0>,0,https,
                    {"url.com",443},
                    "/index.php/apipush/",[],post,
                    {http_request_h,undefined,"keep-alive",undefined,
                     undefined,undefined,undefined,undefined,undefined,
                     undefined,...},
                    {"application/x-www-form-urlencoded",
                     ["from=Url","&",
                      "to=Url","&",
                      "body=is this working ?","&",
                      [...]|...]},
                    {http_options,"HTTP/1.1",infinity,true,
                     {essl,[]},
                     undefined,false,infinity,...},
                    "https://url",
                    [],none,[],1524639132571,undefined,undefined,
                    undefined,...}},
                  infinity]}}
 in function  gen_server:call/3 (gen_server.erl, line 214)
 in call from httpc:handle_request/9 (httpc.erl, line 557)
 in call from helloworld:start/0

我的代码是：

-module(helloworld).
-export([start/0]).

start() ->
 io:format("calling"),
 PostUrl = "host.com",
 Sep = "&",
 PostStatic = [
 "from=dd@host.com", Sep,
 "to=aaa@host.com", Sep,
 "body=is this working ?"
 ],

 httpc:request(post, {PostUrl, [], "application/x-www-form-urlencoded", PostStatic}, [], []),
 io:format("called").

请帮我解决代码有什么问题。解释将是可观的。 P.S：Erlang的新手

Answer 1

您需要在致电inets之前启动httpc:request应用程序：

inets:start().

无法使用erlang httpc：request将数据发布到webservice

1 个答案: