458 lines
15 KiB
Go
458 lines
15 KiB
Go
package WxPay
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import (
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"context"
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"encoding/json"
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"encoding/xml"
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"errors"
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"net/http"
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"sort"
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"strconv"
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"strings"
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"time"
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"gitea.ddegame.cn/open/servicebase/pkg/common"
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"gitea.ddegame.cn/open/servicebase/pkg/htools"
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"gitea.ddegame.cn/open/servicebase/pkg/log"
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"gitea.ddegame.cn/open/servicebase/pkg/partner/wxpay_utility"
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"github.com/spf13/viper"
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"github.com/wechatpay-apiv3/wechatpay-go/core"
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"github.com/wechatpay-apiv3/wechatpay-go/core/auth/verifiers"
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"github.com/wechatpay-apiv3/wechatpay-go/core/downloader"
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"github.com/wechatpay-apiv3/wechatpay-go/core/option"
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"github.com/wechatpay-apiv3/wechatpay-go/services/refunddomestic"
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"github.com/wechatpay-apiv3/wechatpay-go/utils"
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"github.com/anxpp/beego/logs"
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"github.com/wechatpay-apiv3/wechatpay-go/core/notify"
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)
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const ()
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type WxPayClient struct {
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AppId string
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MchId string
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Secret string
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CertificateSerialNo string
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MchAPIv3Key string
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PrivateKeyPath string
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}
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// 支付对象
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type WxPayModel struct {
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DeviceInfo string // 自定义参数，可以为终端设备号
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Body string // 商品简单描述
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Detail string // 商品详细描述，对于使用单品优惠的商户，改字段必须按照规范上传，详见“单品优惠参数说明”
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Attach string // 附加数据，在查询API和支付通知中原样返回，可作为自定义参数使用
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OutTradeNo string // 商户系统内部订单号，要求32个字符内，只能是数字、大小写字母_-|*@ ，且在同一个商户号下唯一。详见商户订单号
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TotalFee string // 订单总金额，单位为分，详见支付金额
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SpbillCreateIp string //APP和网页支付提交用户端ip，Native支付填调用微信支付API的机器IP
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NotifyUrl string // 异步接收微信支付结果通知的回调地址，通知url必须为外网可访问的url，不能携带参数。
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Openid string //trade_type=JSAPI时（即公众号支付），此参数必传，此参数为微信用户在商户对应appid下的唯一标识
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TradeType string // 交易类型 JSAPI=公众号支付 NATIVE=扫码支付 APP=APP支付 MWEB=H5支付
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}
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// 统一下单返回结果对象
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type WxCreatePayOrderResult struct {
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ReturnCode string `xml:"return_code"`
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ReturnMsg string `xml:"return_msg"`
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AppId string `xml:"appid"`
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MchId string `xml:"mch_id"`
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NonceStr string `xml:"nonce_str"`
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ResultCode string `xml:"result_code"`
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Sign string `xml:"sign"`
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PrepayId string `xml:"prepay_id"`
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TradeType string `xml:"trade_type"`
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ErrCode string `xml:"err_code"`
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ErrCodeDes string `xml:"err_code_des"`
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MwebUrl string `xml:"mweb_url"`
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CodeUrl string `xml:"code_url"`
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}
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type RefundModel struct {
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TransactionId string // wx支付单号
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OutRefundNo string // 退款单号，DD Game内部退款唯一单号
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Reason string // 退款原因 1、该退款原因参数的长度不得超过80个字节；2、当订单退款金额小于等于1元且为部分退款时，退款原因将不会在消息中体现。
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NotifyUrl string // 退款回调url
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RefundAmount int64 // 退款金额，单位是分
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PayAmount int64 // 原支付订单的金额
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}
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func (r *RefundModel) CheckParam() error {
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if len(r.Reason) > 80 {
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return errors.New("该退款原因参数的长度不得超过80个字节")
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}
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return nil
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}
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// 微信通知对象
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type WxNotifyDataModel struct {
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Appid string `xml:"appid" json:"appid"`
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BankType string `xml:"bank_type" json:"bank_type"`
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CashFee string `xml:"cash_fee" json:"cash_fee"`
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CouponCount string `xml:"coupon_count" json:"coupon_count"`
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CouponFee string `xml:"coupon_fee" json:"coupon_fee"`
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CouponFee0 string `xml:"coupon_fee_0" json:"coupon_fee_0"`
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CouponId0 string `xml:"coupon_id_0" json:"coupon_id_0"`
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CouponFee1 string `xml:"coupon_fee_1" json:"coupon_fee_1"`
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CouponId1 string `xml:"coupon_id_1" json:"coupon_id_1"`
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CouponFee2 string `xml:"coupon_fee_2" json:"coupon_fee_2"`
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CouponId2 string `xml:"coupon_id_2" json:"coupon_id_2"`
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FeeType string `xml:"fee_type" json:"fee_type"`
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IsSubscribe string `xml:"is_subscribe" json:"is_subscribe"`
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MchId string `xml:"mch_id" json:"mch_id"`
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NonceStr string `xml:"nonce_str" json:"nonce_str"`
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Openid string `xml:"openid" json:"openid"`
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OutTradeNo string `xml:"out_trade_no" json:"out_trade_no"`
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ResultCode string `xml:"result_code" json:"result_code"`
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ReturnCode string `xml:"return_code" json:"return_code"`
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Sign string `xml:"sign" json:"sign"`
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SignType string `xml:"sign_type" json:"sign_type"`
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TimeEnd string `xml:"time_end" json:"time_end"`
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TotalFee string `xml:"total_fee" json:"total_fee"`
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TradeType string `xml:"trade_type" json:"trade_type"`
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TransactionId string `xml:"transaction_id" json:"transaction_id"`
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Attach string `xml:"attach" json:"attach"`
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}
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type Resource struct {
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Algorithm string `json:"algorithm"` // AEAD_AES_256_GCM
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OriginalType string `json:"original_type"`
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Ciphertext string `json:"ciphertext"`
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AssociatedData string `json:"associated_data"`
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Nonce string `json:"nonce"`
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}
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type WxRefundNotifyDataModel struct {
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MchID string `json:"mchid"`
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TransactionID string `json:"transaction_id"`
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OutTradeNo string `json:"out_trade_no"`
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RefundID string `json:"refund_id"`
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OutRefundNo string `json:"out_refund_no"`
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RefundStatus string `json:"refund_status"`
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SuccessTime time.Time `json:"success_time"`
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UserReceivedAccount string `json:"user_received_account"`
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Amount refunddomestic.Amount `json:"amount"`
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}
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type RefundAmount struct {
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Total int `json:"total"`
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Refund int `json:"refund"`
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PayerTotal int `json:"payer_total"`
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PayerRefund int `json:"payer_refund"`
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}
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func NewWxpayClient(appid, mch_id, secret string) *WxPayClient {
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return &WxPayClient{
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AppId: appid,
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MchId: mch_id,
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Secret: secret,
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CertificateSerialNo: viper.GetString("tencent.wxPay.CertificateSerialNo"),
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MchAPIv3Key: viper.GetString("tencent.wxPay.MchAPIv3Key"),
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PrivateKeyPath: viper.GetString("tencent.wxPay.PrivateKeyPath"),
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}
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}
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// 生成微信支付参数
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func (client *WxPayClient) generatePayRequest(payModel WxPayModel) map[string]string {
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result := make(map[string]string)
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result["appid"] = client.AppId //appID
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result["mch_id"] = client.MchId // 商户号
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result["device_info"] = payModel.DeviceInfo
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result["nonce_str"] = htools.GetRandomString(8) // 随机字符串
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result["sign_type"] = "MD5" // 签名类型，默认为MD5，支持HMAC-SHA256和MD5。
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result["body"] = payModel.Body
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result["detail"] = payModel.Detail
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result["attach"] = payModel.Attach
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result["out_trade_no"] = payModel.OutTradeNo
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result["fee_type"] = "CNY" // 符合ISO 4217标准的三位字母代码，默认人民币：CNY，详细列表请参见货币类型
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result["total_fee"] = payModel.TotalFee
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result["spbill_create_ip"] = payModel.SpbillCreateIp
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result["notify_url"] = payModel.NotifyUrl
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result["trade_type"] = payModel.TradeType // 取值如下：JSAPI，NATIVE，APP等，说明详见参数规定
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// 公众号支付
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if payModel.TradeType == common.WEIXIN_PAY_TRADER_TYPE_GONGZHONGHAO {
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result["openid"] = payModel.Openid
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}
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//H5支付
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if payModel.TradeType == common.WEIXIN_PAY_TRADER_TYPE_H5 {
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// 场景
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result["scene_info"] = `{"h5_info":{"type":"Wap","wap_url":"https://www.enen.tech","wap_name":"东东电竞"}}`
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}
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// 生成签名
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result["sign"] = client.generateSign(result) // 签名
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return result
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}
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// 生成微信支付签名
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func (client *WxPayClient) generateSign(parameterMap map[string]string) string {
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// 生成待签名字符串
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sb := getWaitSignString(parameterMap)
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// 拼上key
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sb.Append("&key=" + client.Secret)
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result := htools.StringToMD5(sb.ToString())
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result = strings.ToUpper(result)
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return result
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}
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// map转待签名字符串 ，按key值asc升序，空值不参与计算
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func getWaitSignString(m map[string]string) *htools.StringBuilder {
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keys := make([]string, 0)
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for key, val := range m {
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if key == "sign" {
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continue
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}
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if len(val) == 0 {
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continue
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}
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keys = append(keys, key)
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}
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// 按key升序
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sort.Strings(keys)
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// 拼接字符串
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sb := htools.NewStringBuilder()
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keysCount := len(keys)
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i := 0
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for _, value := range keys {
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k := value
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v := m[k]
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sb.Append(k + "=" + v)
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if i < keysCount-1 {
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sb.Append("&")
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}
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i++
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}
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return sb
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}
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// 验证签名
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func (client *WxPayClient) CheckSign(result map[string]string) error {
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inputSign, ok := result["sign"]
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if !ok {
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return errors.New("待验证参数中缺少sign")
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}
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calSign := client.generateSign(result)
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if inputSign != calSign {
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return errors.New("签名验证失败")
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}
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return nil
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}
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func (client *WxPayClient) CheckRefundNotifySign(request *http.Request) (*WxRefundNotifyDataModel, error) {
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privateKey, err := utils.LoadPrivateKeyWithPath(client.PrivateKeyPath)
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if err != nil {
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return nil, err
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}
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ctx := context.Background()
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// 1. 使用 `RegisterDownloaderWithPrivateKey` 注册下载器
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err = downloader.MgrInstance().RegisterDownloaderWithPrivateKey(ctx, privateKey, client.CertificateSerialNo, client.MchId, client.MchAPIv3Key)
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if err != nil {
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return nil, err
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}
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// 2. 获取商户号对应的微信支付平台证书访问器
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certificateVisitor := downloader.MgrInstance().GetCertificateVisitor(client.MchId)
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// 3. 使用证书访问器初始化 `notify.Handler`
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handler, err := notify.NewRSANotifyHandler(client.MchAPIv3Key, verifiers.NewSHA256WithRSAVerifier(certificateVisitor))
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if err != nil {
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return nil, err
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}
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content := new(map[string]interface{})
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notifyReq, err := handler.ParseNotifyRequest(context.Background(), request, &content)
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// 如果验签未通过，或者解密失败
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if err != nil {
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return nil, err
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}
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var rst WxRefundNotifyDataModel
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log.InfoF("回调通知数据: %s", notifyReq.Resource.Plaintext)
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err = json.Unmarshal([]byte(notifyReq.Resource.Plaintext), &rst)
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if err != nil {
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return nil, err
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}
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log.InfoF("notifyReq : %+v", notifyReq)
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return &rst, nil
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}
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// 微信统一下单
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func (client *WxPayClient) CreatePayOrder(payModel WxPayModel) (resultMap map[string]string, resultErr error) {
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url := "https://api.mch.weixin.qq.com/pay/unifiedorder"
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payRequestMap := client.generatePayRequest(payModel)
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payXml := htools.MapToXML(payRequestMap)
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result, err := htools.HttpPost(url, payXml)
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if err != nil {
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logs.Error("统一下单失败:" + err.Error())
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resultErr = err
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return
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}
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logs.Info("统一下单OK:%s, params: %+v", result, payModel)
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var resultModel WxCreatePayOrderResult
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err2 := xml.Unmarshal([]byte(result), &resultModel)
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if err2 != nil {
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logs.Error("统一下单解析返回结果失败:" + err2.Error())
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resultErr = err2
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return
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}
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if resultModel.ReturnCode != "SUCCESS" {
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logs.Error("统一下单返回失败:" + resultModel.ReturnCode + "-" + resultModel.ReturnMsg)
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resultErr = errors.New("统一下单返回失败:" + resultModel.ReturnCode + "-" + resultModel.ReturnMsg)
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return
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}
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if resultModel.ResultCode != "SUCCESS" {
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logs.Error("统一下单交易失败:" + resultModel.ResultCode + "-" + resultModel.ErrCode + resultModel.ErrCodeDes)
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resultErr = errors.New("统一下单交易失败:" + resultModel.ReturnCode + "-" + resultModel.ReturnMsg)
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return
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}
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switch payModel.TradeType {
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case common.WEIXIN_PAY_TRADER_TYPE_GONGZHONGHAO:
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// 生成公众号需要的支付对象
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resultMap = client.GenerateGongZhongHaoPayMap(resultModel)
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return
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case common.WEIXIN_PAY_TRADER_TYPE_APP:
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// 生成app需要的支付对象
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resultMap = client.GenerateAppPayMap(resultModel)
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return
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case common.WEIXIN_PAY_TRADER_TYPE_H5:
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// 生成app需要的支付对象
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resultMap = client.GenerateWxH5PayMap(resultModel)
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return
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case common.WEIXIN_PAY_TRADER_TYPE_NATIVE:
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// 生成native
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resultMap = client.GenerateWxNativePayMap(resultModel)
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return
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default:
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resultErr = errors.New("只支持APP和公众号支付")
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return
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}
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}
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// 生成app的支付对象
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func (client *WxPayClient) GenerateAppPayMap(createPayOrderResult WxCreatePayOrderResult) map[string]string {
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result := make(map[string]string)
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result["appid"] = createPayOrderResult.AppId
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result["partnerid"] = createPayOrderResult.MchId
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result["prepayid"] = createPayOrderResult.PrepayId
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result["package"] = "Sign=WXPay"
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result["noncestr"] = htools.GetRandomString(6)
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result["timestamp"] = strconv.FormatInt(time.Now().Unix(), 10)
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// 生成签名
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sign := client.generateSign(result)
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result["sign"] = sign
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result["pack"] = "Sign=WXPay" // java因为package是关键字 增加这个字段替代
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return result
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}
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// 生成公众号的支付对象
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func (client *WxPayClient) GenerateGongZhongHaoPayMap(createPayOrderResult WxCreatePayOrderResult) map[string]string {
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result := make(map[string]string)
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result["appId"] = createPayOrderResult.AppId
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result["package"] = "prepay_id=" + createPayOrderResult.PrepayId
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result["nonceStr"] = htools.GetRandomString(6)
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result["timeStamp"] = strconv.FormatInt(time.Now().Unix(), 10)
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result["signType"] = "MD5"
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// 生成签名
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sign := client.generateSign(result)
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result["paySign"] = sign
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return result
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}
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// 生成H5的支付对象
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func (client *WxPayClient) GenerateWxH5PayMap(createPayOrderResult WxCreatePayOrderResult) map[string]string {
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result := make(map[string]string)
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result["appId"] = createPayOrderResult.AppId
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result["wxH5PayUrl"] = createPayOrderResult.MwebUrl
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return result
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}
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// 生成Native的支付对象
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func (client *WxPayClient) GenerateWxNativePayMap(createPayOrderResult WxCreatePayOrderResult) map[string]string {
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result := make(map[string]string)
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result["codeUrl"] = createPayOrderResult.CodeUrl
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return result
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}
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// GenerateWxRefund 生成Native的支付对象
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func (client *WxPayClient) GenerateWxRefund(model *RefundModel) (*refunddomestic.Refund, error) {
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err := model.CheckParam()
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if err != nil {
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return nil, err
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}
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mchPrivateKey, err := utils.LoadPrivateKeyWithPath(client.PrivateKeyPath)
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if err != nil {
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return nil, err
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}
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ctx := context.Background()
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// 使用商户私钥等初始化 client，并使它具有自动定时获取微信支付平台证书的能力
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opts := []core.ClientOption{
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option.WithWechatPayAutoAuthCipher(client.MchId, client.CertificateSerialNo, mchPrivateKey, client.MchAPIv3Key),
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}
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newClient, err := core.NewClient(ctx, opts...)
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if err != nil {
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return nil, err
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}
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svc := refunddomestic.RefundsApiService{
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Client: newClient,
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}
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refund, _, err := svc.Create(context.Background(), refunddomestic.CreateRequest{
|
||
TransactionId: wxpay_utility.String(model.TransactionId),
|
||
OutRefundNo: wxpay_utility.String(model.OutRefundNo),
|
||
Reason: wxpay_utility.String(model.Reason),
|
||
NotifyUrl: wxpay_utility.String(model.NotifyUrl),
|
||
FundsAccount: refunddomestic.REQFUNDSACCOUNT_AVAILABLE.Ptr(),
|
||
Amount: &refunddomestic.AmountReq{
|
||
Refund: wxpay_utility.Int64(model.RefundAmount),
|
||
Total: wxpay_utility.Int64(model.PayAmount),
|
||
Currency: wxpay_utility.String("CNY"),
|
||
},
|
||
})
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
return refund, nil
|
||
}
|