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我正在尝试为我的 phoenix-framework 项目创建一个版本。

一切正常,直到我的代码需要使用 OTP 中的 :httpc 模块执行特定操作。

显然 exrm 没有捆绑 httpc 模块,因此找不到它。

我试图将它添加到我的 mix.exs 应用程序依赖项中,但是一旦我这样做,它就会由于“错误”而拒绝创建发布

有谁知道如何解决这一问题 ?

对于 mix.env 与 :httpc 作为依赖:

$ MIX_ENV=prod mix release --verbosity=vebose                                                        
        Building release with MIX_ENV=prod.
        ==> Generating relx configuration...
        ==> Generating sys.config...
        ==> Generating boot script...
        ==> Packaging consolidated protocols...
        ==> Generating release...
        ===> Starting relx build process ...
        ===> Resolving OTP Applications from directories:
                  /home/morgan/Documents/rateapi/_build/prod/lib
                  /home/morgan/Documents/rateapi/deps
                  /usr/local/lib/elixir/bin/../lib/eex/ebin
                  /usr/local/lib/elixir/bin/../lib/elixir/ebin
                  /usr/local/lib/elixir/bin/../lib/ex_unit/ebin
                  /usr/local/lib/elixir/bin/../lib/iex/ebin
                  /usr/local/lib/elixir/bin/../lib/logger/ebin
                  /usr/local/lib/elixir/bin/../lib/mix/ebin
                  /home/morgan/Documents/rateapi/lib
                  /usr/erlang/otp_R18B03/lib/erlang/lib
                  /home/morgan/Documents/rateapi/rel
        ==> ERROR: "Failed to build release. Please fix any errors and try again."

对于没有 :httpc 依赖的 mix.env :

** (exit) an exception was raised:
    ** (UndefinedFunctionError) function :httpc.request/4 is undefined (module :httpc is not available)
        :httpc.request(:get, {'http://free.currencyconverterapi.com/api/v3/currencies', []}, [], [])
        (fx_rates) web/controllers/rate_controller.ex:46: FxRates.V1.RateController.reload_currencies/0
        (fx_rates) web/controllers/rate_controller.ex:66: FxRates.V1.RateController.show/2
        (fx_rates) web/controllers/rate_controller.ex:1: FxRates.V1.RateController.action/2
        (fx_rates) web/controllers/rate_controller.ex:1: FxRates.V1.RateController.phoenix_controller_pipeline/2
        (fx_rates) lib/phoenix/router.ex:261: FxRates.Router.dispatch/2
        (fx_rates) web/router.ex:1: FxRates.Router.do_call/2
        (fx_rates) lib/fx_rates/endpoint.ex:1: FxRates.Endpoint.phoenix_pipeline/1
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1 回答 1

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您可能缺少 erlang-inets 包。尝试安装或重新安装。如果您使用的是 Ubuntu,您可以安装它:

sudo apt-get install erlang-inets

或者,您可能想尝试将模块 :inets 添加到您的mix.exs应用程序依赖项中。

于 2016-05-19T14:30:03.967 回答