ExAlipay

An Alipay client that is extendable.

The docs can be found at https://hexdocs.pm/ex_alipay/0.1.0.

This module defined some common used api and you can easily add new api:

• page_pay - alipay.trade.page.pay
• wap_pay - alipay.trade.wap.pay
• app_pay - alipay.trade.app.pay
• query - alipay.trade.query
• refund - alipay.trade.refund
• close - alipay.trade.close
• refund_query - alipay.trade.fastpay.refund.query
• bill_downloadurl_query - alipay.data.dataservice.bill.downloadurl.query
• auth_token - alipay.system.oauth.token
• user_info - alipay.user.info.share
• transfer - alipay.fund.trans.toaccount.transfer
• transfer_query - alipay.fund.trans.order.query

Installation

def deps do
  [
    {:ex_alipay, "~> 0.1.0"}
  ]
end

Example Usage:

Define a module AlipayClient that use ExAlipay.Client, AlipayClient module will have new defined functions that calling the same ExAlipay.Client functions, the difference is that it stores the client with module property @client for convenient uasge:

defmodule AlipayClient do
  use ExAlipay.Client, Application.fetch_env!(:my_app, __MODULE__)
end

Config your AlipayClient in config/config.exs:

config :my_app, AlipayClient,
  appid: "APPID",
  pid: "PID",
  public_key: "-- public_key --",
  private_key: "-- private_key --",
  sandbox?: false

Use the page_pay:

AlipayClient.page_pay(%{
  out_trade_no: "out_trade_no",
  total_amount: 100,
  subject: "the subject",
  return_url: "http://example.com/return_url",
  notify_url: "http://example.com/notify_url",
})

IN the handler view of alipay notify:

if AlipayClient.verify_notify_sign?(body) do
  # process the payment success logic
  # ...
  # response a plain text `success` tio alipay
else
  # response with error
end

Extend new api you need that not in ExAlipay.Client.

defmodule AlipayClient do
  use ExAlipay.Client, Application.fetch_env!(:my_app, __MODULE__)

  # access the public api `request` that defined in `ExAlipay.Client`
  # also possible to use functions in `ExAlipay.Utils` directly
  # see: https://docs.open.alipay.com/api_1/alipay.trade.precreate
  def pre_create(params), do: request(@client, "alipay.trade.precreate", params)
end

# now we can use the new api
# AlipayClient.pre_create(%{})