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@@ -18,6 +18,36 @@ import (
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"strings"
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)
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+//获取微信支付所需参数里的Sign值（通过支付参数计算Sign值）
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+// 注意：BodyMap中如无 sign_type 参数，默认赋值 sign_type 为 MD5
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+// appId：应用ID
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+// mchId：商户ID
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+// apiKey：API秘钥值
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+// 返回参数 sign：通过Appid、MchId、ApiKey和BodyMap中的参数计算出的Sign值
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+func GetWeChatParamSign(appId, mchId, apiKey string, bm BodyMap) (sign string) {
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+ bm.Set("appid", appId)
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+ bm.Set("mch_id", mchId)
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+ signType := bm.Get("sign_type")
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+ if signType == null {
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+ bm.Set("sign_type", SignType_MD5)
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+ }
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+ signStr := bm.EncodeWeChatSignParams(apiKey)
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+ //fmt.Println("signStr:", signStr)
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+
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+ var hashSign []byte
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+ if signType == SignType_HMAC_SHA256 {
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+ hash := hmac.New(sha256.New, []byte(apiKey))
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+ hash.Write([]byte(signStr))
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+ hashSign = hash.Sum(nil)
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+ } else {
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+ hash := md5.New()
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+ hash.Write([]byte(signStr))
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+ hashSign = hash.Sum(nil)
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+ }
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+ sign = strings.ToUpper(hex.EncodeToString(hashSign))
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+ return
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+}
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+
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//解析微信支付异步通知的结果到BodyMap
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// req：*http.Request
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// 返回参数bm：Notify请求的参数
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Jerry