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50 lines
1.4 KiB
50 lines
1.4 KiB
package wechatpayopen
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import (
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"context"
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"fmt"
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"go.dtapp.net/gorandom"
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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 `json:"app_id"` // 应用ID
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TimeStamp string `json:"time_stamp"` // 时间戳
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NonceStr string `json:"nonce_str"` // 随机字符串
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Package string `json:"package"` // 订单详情扩展字符串
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SignType string `json:"sign_type"` // 签名方式
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PaySign string `json:"pay_sign"` // 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 (c *Client) GetJsApi(ctx context.Context, param GetJsApi) (result GetJsApiResult, err error) {
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// sign params
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timeStamp := time.Now().Unix()
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nonce := gorandom.Alphanumeric(32)
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result.AppId = c.GetSubAppid()
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result.TimeStamp = fmt.Sprintf("%v", timeStamp) // 时间戳
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result.NonceStr = nonce // 随机字符串
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result.Package = param.Package // 订单详情扩展字符串
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// 签名
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message := fmt.Sprintf("%s\n%s\n%s\n%s\n", c.GetSubAppid(), fmt.Sprintf("%v", timeStamp), nonce, param.Package)
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signBytes, err := c.signPKCS1v15(message, []byte(c.GetMchSslKey()))
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if err != nil {
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return result, err
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}
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sign := c.base64EncodeStr(signBytes)
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result.PaySign = sign // 签名
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result.SignType = "RSA" // 签名方式
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return result, nil
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}
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