规范目录

2026-02-13 17:22:26 +08:00 · 2020-01-20 13:54:04 +08:00
parent 9b06954b10
commit 15ebd71a04
75 changed files with 985 additions and 1871 deletions
--- a/pay/refund/refund.go
+++ b/pay/refund/refund.go
@@ -0,0 +1,121 @@
+package refund
+
+import (
+	"encoding/xml"
+	"fmt"
+
+	"github.com/silenceper/wechat/pay/config"
+	"github.com/silenceper/wechat/util"
+)
+
+var refundGateway = "https://api.mch.weixin.qq.com/secapi/pay/refund"
+
+// Refund struct extends context
+type Refund struct {
+	*config.Config
+}
+
+// NewRefund return an instance of refund package
+func NewRefund(cfg *config.Config) *Refund {
+	refund := Refund{cfg}
+	return &refund
+}
+
+//Params 调用参数
+type Params struct {
+	TransactionID string
+	OutRefundNo   string
+	TotalFee      string
+	RefundFee     string
+	RefundDesc    string
+	RootCa        string //ca证书
+}
+
+//request 接口请求参数
+type request struct {
+	AppID         string `xml:"appid"`
+	MchID         string `xml:"mch_id"`
+	NonceStr      string `xml:"nonce_str"`
+	Sign          string `xml:"sign"`
+	SignType      string `xml:"sign_type,omitempty"`
+	TransactionID string `xml:"transaction_id"`
+	OutRefundNo   string `xml:"out_refund_no"`
+	TotalFee      string `xml:"total_fee"`
+	RefundFee     string `xml:"refund_fee"`
+	RefundDesc    string `xml:"refund_desc,omitempty"`
+	//NotifyUrl     string `xml:"notify_url,omitempty"`
+}
+
+//Response 接口返回
+type Response struct {
+	ReturnCode          string `xml:"return_code"`
+	ReturnMsg           string `xml:"return_msg"`
+	AppID               string `xml:"appid,omitempty"`
+	MchID               string `xml:"mch_id,omitempty"`
+	NonceStr            string `xml:"nonce_str,omitempty"`
+	Sign                string `xml:"sign,omitempty"`
+	ResultCode          string `xml:"result_code,omitempty"`
+	ErrCode             string `xml:"err_code,omitempty"`
+	ErrCodeDes          string `xml:"err_code_des,omitempty"`
+	TransactionID       string `xml:"transaction_id,omitempty"`
+	OutTradeNo          string `xml:"out_trade_no,omitempty"`
+	OutRefundNo         string `xml:"out_refund_no,omitempty"`
+	RefundID            string `xml:"refund_id,omitempty"`
+	RefundFee           string `xml:"refund_fee,omitempty"`
+	SettlementRefundFee string `xml:"settlement_refund_fee,omitempty"`
+	TotalFee            string `xml:"total_fee,omitempty"`
+	SettlementTotalFee  string `xml:"settlement_total_fee,omitempty"`
+	FeeType             string `xml:"fee_type,omitempty"`
+	CashFee             string `xml:"cash_fee,omitempty"`
+	CashFeeType         string `xml:"cash_fee_type,omitempty"`
+}
+
+//Refund 退款申请
+func (refund *Refund) Refund(p *Params) (rsp Response, err error) {
+	nonceStr := util.RandomStr(32)
+	param := make(map[string]interface{})
+	param["appid"] = refund.AppID
+	param["mch_id"] = refund.MchID
+	param["nonce_str"] = nonceStr
+	param["out_refund_no"] = p.OutRefundNo
+	param["refund_desc"] = p.RefundDesc
+	param["refund_fee"] = p.RefundFee
+	param["total_fee"] = p.TotalFee
+	param["sign_type"] = "MD5"
+	param["transaction_id"] = p.TransactionID
+
+	bizKey := "&key=" + refund.Key
+	str := util.OrderParam(param, bizKey)
+	sign := util.MD5Sum(str)
+	request := request{
+		AppID:         refund.AppID,
+		MchID:         refund.MchID,
+		NonceStr:      nonceStr,
+		Sign:          sign,
+		SignType:      "MD5",
+		TransactionID: p.TransactionID,
+		OutRefundNo:   p.OutRefundNo,
+		TotalFee:      p.TotalFee,
+		RefundFee:     p.RefundFee,
+		RefundDesc:    p.RefundDesc,
+	}
+	rawRet, err := util.PostXMLWithTLS(refundGateway, request, p.RootCa, refund.MchID)
+	if err != nil {
+		return
+	}
+	err = xml.Unmarshal(rawRet, &rsp)
+	if err != nil {
+		return
+	}
+	if rsp.ReturnCode == "SUCCESS" {
+		if rsp.ResultCode == "SUCCESS" {
+			err = nil
+			return
+		}
+		err = fmt.Errorf("refund error, errcode=%s,errmsg=%s", rsp.ErrCode, rsp.ErrCodeDes)
+		return
+	}
+	err = fmt.Errorf("[msg : xmlUnmarshalError] [rawReturn : %s] [params : %s] [sign : %s]",
+		string(rawRet), str, sign)
+	return
+}