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59 lines
1.3 KiB
59 lines
1.3 KiB
package wechatpayapiv3
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import (
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"fmt"
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"gitee.com/dtapps/go-library/utils/random"
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"io/ioutil"
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"os"
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"time"
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)
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// GetJsApi 入参
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type GetJsApi struct {
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Package string `json:"package"`
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}
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// GetJsApiResult 返回参数
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type GetJsApiResult struct {
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AppId string // 应用ID
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TimeStamp string // 时间戳
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NonceStr string // 随机字符串
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Package string // 订单详情扩展字符串
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SignType string // 签名方式
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PaySign string // 签名
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}
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// GetJsApi JSAPI调起支付API https://pay.weixin.qq.com/wiki/doc/apiv3/apis/chapter3_1_4.shtml
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func (app *App) GetJsApi(param GetJsApi) (params GetJsApiResult, err error) {
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// sign params
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timeStamp := time.Now().Unix()
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nonce := random.Alphanumeric(32)
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params.AppId = app.AppId
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params.TimeStamp = fmt.Sprintf("%v", timeStamp)
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params.NonceStr = nonce
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params.Package = param.Package
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// 签名
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message := fmt.Sprintf("%s\n%s\n%s\n%s\n", app.AppId, fmt.Sprintf("%v", timeStamp), nonce, param.Package)
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open, err := os.Open(app.MchPrivateKey)
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if err != nil {
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return params, err
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}
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defer open.Close()
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privateKey, err := ioutil.ReadAll(open)
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if err != nil {
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return params, err
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}
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signBytes, err := app.signPKCS1v15(message, privateKey)
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if err != nil {
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return params, err
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}
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sign := app.base64EncodeStr(signBytes)
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params.PaySign = sign
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params.SignType = "RSA"
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return params, nil
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}
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