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88 lines
2.5 KiB
Go
88 lines
2.5 KiB
Go
package pay
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import (
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"fmt"
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"github.com/silenceper/wechat/util"
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"sort"
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)
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// Base 公用参数
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type Base struct {
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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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Sign string `xml:"sign"`
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}
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// NotifyResult 下单回调
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type NotifyResult struct {
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Base
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ReturnCode string `xml:"return_code"`
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ReturnMsg string `xml:"return_msg"`
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ResultCode string `xml:"result_code"`
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OpenID string `xml:"openid"`
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IsSubscribe string `xml:"is_subscribe"`
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TradeType string `xml:"trade_type"`
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BankType string `xml:"bank_type"`
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TotalFee int `xml:"total_fee"`
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FeeType string `xml:"fee_type"`
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CashFee int `xml:"cash_fee"`
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CashFeeType string `xml:"cash_fee_type"`
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TransactionID string `xml:"transaction_id"`
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OutTradeNo string `xml:"out_trade_no"`
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Attach string `xml:"attach"`
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TimeEnd string `xml:"time_end"`
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}
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// NotifyResp 消息通知返回
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type NotifyResp struct {
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ReturnCode string `xml:"return_code"`
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ReturnMsg string `xml:"return_msg"`
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}
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// VerifySign 验签
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func (pcf *Pay) VerifySign(notifyRes NotifyResult) bool {
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// 封装map 请求过来的 map
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resMap := make(map[string]interface{})
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// base
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resMap["appid"] = notifyRes.AppID
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resMap["mch_id"] = notifyRes.MchID
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resMap["nonce_str"] = notifyRes.NonceStr
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// NotifyResult
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resMap["return_code"] = notifyRes.ReturnCode
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resMap["result_code"] = notifyRes.ResultCode
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resMap["openid"] = notifyRes.OpenID
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resMap["is_subscribe"] = notifyRes.IsSubscribe
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resMap["trade_type"] = notifyRes.TradeType
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resMap["bank_type"] = notifyRes.BankType
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resMap["total_fee"] = notifyRes.TotalFee
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resMap["fee_type"] = notifyRes.FeeType
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resMap["cash_fee"] = notifyRes.CashFee
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resMap["transaction_id"] = notifyRes.TransactionID
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resMap["out_trade_no"] = notifyRes.OutTradeNo
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resMap["attach"] = notifyRes.Attach
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resMap["time_end"] = notifyRes.TimeEnd
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// 支付key
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sortedKeys := make([]string, 0, len(resMap))
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for k := range resMap {
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sortedKeys = append(sortedKeys, k)
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}
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sort.Strings(sortedKeys)
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// STEP2, 对key=value的键值对用&连接起来，略过空值
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var signStrings string
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for _, k := range sortedKeys {
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value := fmt.Sprintf("%v", resMap[k])
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if value != "" {
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signStrings = signStrings + k + "=" + value + "&"
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}
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}
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// STEP3, 在键值对的最后加上key=API_KEY
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signStrings = signStrings + "key=" + pcf.PayKey
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// STEP4, 进行MD5签名并且将所有字符转为大写.
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sign := util.MD5Sum(signStrings)
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if sign != notifyRes.Sign {
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return false
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}
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return true
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}
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