reverse pay
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parent
65fedea2db
commit
cc832865dc
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@ -2,10 +2,12 @@ package weixin
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import (
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"bytes"
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"crypto/tls"
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"errors"
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"fmt"
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"io"
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"net/http"
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"os"
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)
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var (
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@ -16,11 +18,14 @@ type WxpayPartnerConfig struct {
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MchId string
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AppId string
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ApiKeyV2 string
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CertFile string
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KeyFile string
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}
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type WxpayPartner struct {
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config *WxpayPartnerConfig
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stdClient *http.Client
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tlsClient *http.Client
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}
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type MicroPayRequest struct {
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@ -34,11 +39,30 @@ type MicroPayRequest struct {
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Attach string
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}
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type ReversePayRequest struct {
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SubMchId string
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SubAppId string
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OutTradeNo string
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}
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func NewWxpayPartner(cfg *WxpayPartnerConfig) *WxpayPartner {
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return &WxpayPartner{
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if cfg.MchId != "" {
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}
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c := &WxpayPartner{
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config: cfg,
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stdClient: &http.Client{},
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}
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var err error
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if cfg.KeyFile != "" && cfg.CertFile != "" {
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certBody, _ := os.ReadFile(cfg.CertFile)
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keyBody, _ := os.ReadFile(cfg.KeyFile)
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c.tlsClient, err = c.withCert(certBody, keyBody)
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if err != nil {
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panic(err)
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}
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}
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return c
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}
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func (p *WxpayPartner) MicroPay(req *MicroPayRequest) error {
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@ -67,7 +91,7 @@ func (p *WxpayPartner) MicroPay(req *MicroPayRequest) error {
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params.Set("sign", params.SignMd5(p.config.ApiKeyV2))
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reqUrl := "https://api.mch.weixin.qq.com/pay/micropay"
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body, err := p.post(reqUrl, params)
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body, err := p.post(reqUrl, params, false)
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if err != nil {
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return err
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}
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@ -88,11 +112,73 @@ func (p *WxpayPartner) MicroPay(req *MicroPayRequest) error {
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return nil
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}
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func (p *WxpayPartner) Reverse(req *ReversePayRequest) error {
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params := make(Params)
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params.Set("appid", p.config.AppId)
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params.Set("mch_id", p.config.MchId)
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params.Set("sub_mch_id", req.SubMchId)
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params.Set("nonce_str", randomStr(32))
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params.Set("out_trade_no", req.OutTradeNo)
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if req.SubAppId != "" {
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params.Set("sub_appid", req.SubAppId)
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}
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params.Set("sign", params.SignMd5(p.config.ApiKeyV2))
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reqUrl := "https://api.mch.weixin.qq.com/secapi/pay/reverse"
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body, err := p.post(reqUrl, params, true)
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if err != nil {
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return err
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}
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result := make(Params)
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result.Decode(body)
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if result.GetString("return_code") != "SUCCESS" {
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return errors.New(string(body))
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}
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if result.GetString("result_code") != "SUCCESS" {
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if result.GetString("err_code") == "USERPAYING" {
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return ErrUserPaying
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}
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return fmt.Errorf("%s:%s",
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result.GetString("err_code"), result.GetString("err_code_des"))
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}
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return nil
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}
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// 附着商户证书
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func (c *WxpayPartner) withCert(cert, key []byte) (*http.Client, error) {
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tlsCert, err := tls.X509KeyPair(cert, key)
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if err != nil {
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return nil, err
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}
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conf := &tls.Config{
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Certificates: []tls.Certificate{tlsCert},
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}
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trans := &http.Transport{
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TLSClientConfig: conf,
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}
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return &http.Client{
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Transport: trans,
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}, nil
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}
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// 发送请求
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func (c *WxpayPartner) post(url string, params Params) ([]byte, error) {
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func (c *WxpayPartner) post(url string, params Params, tls bool) ([]byte, error) {
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var httpc *http.Client
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if tls {
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if c.tlsClient == nil {
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return nil, errors.New("tls wepay is not initialized")
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}
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httpc = c.tlsClient
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} else {
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httpc = c.stdClient
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}
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buf := bytes.NewBuffer(params.Encode())
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resp, err := httpc.Post(url, "application/xml; charset=utf-8", buf)
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