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fix signature calculate

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This commit is contained in:
Mongo
2017-10-31 19:22:43 +08:00
parent 0762d6c249
commit a9bfce3fbe
2 changed files with 20 additions and 9 deletions
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13
pay/pay.go
View File

@@ -2,10 +2,8 @@ package pay
import (
"errors"
"crypto/md5"
"encoding/xml"
"fmt"
"strings"
"github.com/silenceper/wechat/context"
"github.com/silenceper/wechat/util"
)
@@ -88,12 +86,9 @@ func NewPay(ctx *context.Context) *Pay {
func (pcf *Pay) PrePayId(p *PayParams) (prePayID string, err error) {
nonceStr := util.RandomStr(32)
tradeType := "JSAPI"
template := "appid=%s&body=%s&mch_id=%s&nonce_str=%s&notify_url=%s&out_trade_no=%s&spbill_create_ip=%s&total_fee=%s&trade_type=%s"
str := fmt.Sprintf(template, pcf.AppID, p.Body, pcf.PayMchID, nonceStr, pcf.PayNotifyURL, p.OutTradeNo, p.CreateIP, p.TotalFee, tradeType)
str = str + "&key=" + pcf.PayKey
sum := md5.Sum([]byte(str))
signature := string(sum[:])
sign := strings.ToUpper(signature)
template := "appid=%s&body=%s&mch_id=%s&nonce_str=%s&notify_url=%s&out_trade_no=%s&spbill_create_ip=%s&total_fee=%s&trade_type=%s&key=%s"
str := fmt.Sprintf(template, pcf.AppID, p.Body, pcf.PayMchID, nonceStr, pcf.PayNotifyURL, p.OutTradeNo, p.CreateIP, p.TotalFee, tradeType, pcf.PayKey)
sign := util.Md5Sum(str)
request := payRequest{
AppID: pcf.AppID,
MchID: pcf.PayMchID,
@@ -123,6 +118,6 @@ func (pcf *Pay) PrePayId(p *PayParams) (prePayID string, err error) {
}
return "", errors.New(payRet.ErrCode + payRet.ErrCodeDes)
} else {
return "", errors.New("xml unmarshal err : raw - " + string(rawRet))
return "", errors.New("[msg : xmlUnmarshalError] [rawReturn : " + string(rawRet) + "] [params : " + str + "] [sign : " + sign + "]")
}
}

16
util/crypto.go
View File

@@ -1,9 +1,13 @@
package util
import (
"bytes"
"bufio"
"crypto/aes"
"crypto/cipher"
"crypto/md5"
"encoding/base64"
"encoding/hex"
"fmt"
)
@@ -181,3 +185,15 @@ func decodeNetworkByteOrder(orderBytes []byte) (n uint32) {
uint32(orderBytes[2])<<8 |
uint32(orderBytes[3])
}
// 计算 32 位长度的 MD5 sum
func Md5Sum(txt string) (sum string) {
h := md5.New()
buf := bufio.NewWriterSize(h, 128)
buf.WriteString(txt)
buf.Flush()
sign := make([]byte, hex.EncodedLen(h.Size()))
hex.Encode(sign, h.Sum(nil))
sum = string(bytes.ToUpper(sign))
return
}