hongze_mfyx/services/wx_pay.go

package services

import (
	"context"
	"fmt"
	"github.com/wechatpay-apiv3/wechatpay-go/core"
	"github.com/wechatpay-apiv3/wechatpay-go/core/option"
	"github.com/wechatpay-apiv3/wechatpay-go/services/payments/jsapi"
	payUtils "github.com/wechatpay-apiv3/wechatpay-go/utils"
	"hongze/hongze_mfyx/models/order"
	"hongze/hongze_mfyx/utils"
	"log"
)

const (
	MchPKFileName              = "./utils/cret/apiclient_key.pem"
	Mchid                      = "1624495680"
	MchCertificateSerialNumber = "5ED2719CFAE5205763034AD80BF4B8A33533C418"
	MchAPIv3Key                = "W1tbnzQrzQ7yRRNuQCIHjis8dgdasKVX"
)

//func init() {
//	ExampleJsapiApiServicePrepay()
//}

// 获取加解密处理
func getWechatClient() (context.Context, *core.Client, error) {
	// 使用 utils 提供的函数从本地文件中加载商户私钥，商户私钥会用来生成请求的签名
	mchPrivateKey, err := payUtils.LoadPrivateKeyWithPath(MchPKFileName)
	if err != nil {
		log.Print("load merchant private key error")
		return nil, nil, err
	}
	ctx := context.Background()
	// 使用商户私钥等初始化 client，并使它具有自动定时获取微信支付平台证书的能力
	opts := []core.ClientOption{
		option.WithWechatPayAutoAuthCipher(Mchid, MchCertificateSerialNumber, mchPrivateKey, MchAPIv3Key),
	}
	client, err := core.NewClient(ctx, opts...)
	if err != nil {
		log.Printf("new wechat pay client err:%s", err)
		return nil, nil, err
	}
	return ctx, client, nil
}

func ExampleJsapiApiServicePrepay(orderDetail *order.CygxOrder, openid string) {
	//mchPrivateKey, err := payUtils.LoadPrivateKeyWithPath(MchPKFileName)
	//if err != nil {
	//	log.Print("load merchant private key error")
	//	return
	//}
	//ctx := context.Background()
	//// 使用商户私钥等初始化 client，并使它具有自动定时获取微信支付平台证书的能力
	//opts := []core.ClientOption{
	//	option.WithWechatPayAutoAuthCipher(Mchid, MchCertificateSerialNumber, mchPrivateKey, MchAPIv3Key),
	//}
	//client, err := core.NewClient(ctx, opts...)
	ctx, client, err := getWechatClient()
	if err != nil {
		log.Printf("getWechatClientt err:%s", err)
		return
	}
	svc := jsapi.JsapiApiService{Client: client}
	// 得到prepay_id，以及调起支付所需的参数和签名
	resp, _, err := svc.PrepayWithRequestPayment(ctx,
		jsapi.PrepayRequest{
			Appid:       core.String(utils.WxAppId),
			Mchid:       core.String(Mchid),
			Description: core.String(orderDetail.SourceTitle),
			OutTradeNo:  core.String(orderDetail.OrderCode),
			Attach:      core.String(""),
			NotifyUrl:   core.String("https://www.weixin.qq.com/wxpay/pay.php"),
			Amount: &jsapi.Amount{
				Total: core.Int64(int64(orderDetail.OrderMoney * 100)), // 分
			},
			Payer: &jsapi.Payer{
				Openid: core.String(openid),
			},
		},
	)
	fmt.Println("PrepayId", *resp)
	if err == nil {
		log.Println(*resp.Appid)
	} else {
		log.Println(err)
	}
}