This README would normally document whatever steps are necessary to get the application up and running.

Things you may want to cover:

• Ruby version 2.5.1

• System dependencies

• Configuration

  1. 支持多账号 账号设定

    wxpay:
      accounts:
        - appid: xxxxxx
          mch_id: xxxxxx
          key: xxxxxx
          notify_url: xxxxx
          package: Sign=WXPay

  2. 创建支付订单

  其中有以下的支付方式

    # 扫码 支付参数
    def wxpay_code_params(**params)
      {
        no:               params[:no],
        body:             params[:body],
        kind:             "code",
        appid:            params[:appid],
        total_fee:        params[:total_fee],
        out_trade_no:     params[:transaction_no],
        spbill_create_ip: params[:remote_ip]
      }
    end
  
    # H5 支付参数
    def wxpay_h5_params(**params)
      {
        no:               params[:no],
        body:             params[:body],
        kind:             'h5',
        appid:            params[:appid],
        total_fee:        params[:total_fee],
        out_trade_no:     params[:transaction_no],
        spbill_create_ip: params['remote_ip'],
        scene_info: {
          h5_info: {
            type: "Wap",
            wap_url: params[:host],
            wap_name: "订单付款"
          }
        }
      }
    end
  
    # APP 支付参数
    def wxpay_app_params(**params)
      {
        no:                params[:no],
        body:              params[:body],
        out_trade_no:      params[:transaction_no],
        total_fee:         params[:total_fee],
        spbill_create_ip:  params[:remote_ip],
        kind:             'app',
        appid:            params[:appid],
      }
    end
  
    # 小程序 支付参数
    #
    def wxpay_small_params(**params)
      {
        no:               params[:no],
        body:             params[:body],
        spbill_create_ip: params[:remote_ip],
        out_trade_no:     params[:transaction_no],
        total_fee:        params[:total_fee],
        appid:            params[:appid],
        openid:           params[:openid],
        kind:             'applets',
      }
    end
  
    ## 公众号 支付参数
    def wxpay_pub_params(**params)
      {
        no:               params[:no],
        body:             params[:body],
        spbill_create_ip: params[:remote_ip],
        out_trade_no:     params[:transaction_no],
        total_fee:        params[:total_fee],
        appid:            params[:appid],
        openid:           params[:openid],
        kind:             'pub'
      }
    end
  
    # 下单
    Wechat::MainService.new.create("wxpay_#{_kind.downcase}_params")

  3. 退款

    def wechat_pay_refund(params = {})
      wxpay = Wxpay.find_by(out_transaction_no: "xxxx")
  
      params = {
        out_refund_no:  params[:out_refund_no],         # 退款单号，一个单号 只能退一次
        total_fee:      params[:total_fee],             # 总支付金额
        refund_fee:     params[:refund_fee],            # 退款金额
        out_trade_no:   wxpay.try(:out_transaction_no), # 支付单号
      }
      result = Wechat::MainService.new
      response = result.refund(params)
    end

  4. 回调

  1. 首先微信的回调都是xml，如果是 用grape的话 需要指定 content_type ,format 最重要的是指定 status 为 200 ，默认post是201 ，导致 微信回调返回失败

• Database creation

• Database initialization

• How to run the test suite

• Services (job queues, cache servers, search engines, etc.)

• Deployment instructions

• ...