增加了微信支付

extend/weChat/base.go

@@ -7,25 +7,24 @@ import (
 	"github.com/wechatpay-apiv3/wechatpay-go/core/option"
 	"github.com/wechatpay-apiv3/wechatpay-go/utils"
 	"hepa-calc-api/config"
-	"path/filepath"
+)
+
+var (
+	mchId                      = config.C.Wechat.Pay1659662936.MchId                      // 商户号
+	mchCertificateSerialNumber = config.C.Wechat.Pay1659662936.MchCertificateSerialNumber // 商户证书序列号
+	v3ApiSecret                = config.C.Wechat.Pay1659662936.V3ApiSecret                // 商户APIv3密钥
+	privateKeyPath             = "extend/weChat/certs/" + mchId + "/apiclient_key.pem"    // 商户私钥文件地址
 )
 
 // 创建客户端
 func createClient() (*core.Client, error) {
-	mchId := config.C.Wechat.Pay1659662936.MchId                                           // 商户号
-	mchCertificateSerialNumber := config.C.Wechat.Pay1659662936.MchCertificateSerialNumber // 商户证书序列号
-	v3ApiSecret := config.C.Wechat.Pay1659662936.V3ApiSecret                               // 商户APIv3密钥
-
 	if mchId == "" {
 		return nil, errors.New("商户号错误")
 	}
 
-	// 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
-	certsDir := filepath.Join("extend/weChat/certs", mchId, "/apiclient_key.pem")
-	// certsDir := filepath.Join("extend/weChat/certs", "/1636644248/apiclient_key.pem")
-	mchPrivateKey, err := utils.LoadPrivateKeyWithPath(certsDir)
+	mchPrivateKey, err := utils.LoadPrivateKeyWithPath(privateKeyPath)
 	if err != nil {
-		return nil, errors.New("微信签名生成失败")
+		return nil, errors.New("微信支付生成失败")
 	}
 
 	ctx := context.Background()

extend/weChat/parseNotify.go

@@ -0,0 +1,43 @@
+package weChat
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"github.com/wechatpay-apiv3/wechatpay-go/core/auth/verifiers"
+	"github.com/wechatpay-apiv3/wechatpay-go/core/downloader"
+	"github.com/wechatpay-apiv3/wechatpay-go/core/notify"
+	"github.com/wechatpay-apiv3/wechatpay-go/services/payments"
+	"github.com/wechatpay-apiv3/wechatpay-go/utils"
+)
+
+// ParseNotify 回调通知的验签与解密
+func ParseNotify(c *gin.Context) (notifyReq *notify.Request, err 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 := utils.LoadPrivateKeyWithPath(privateKeyPath)
+	if err != nil {
+		return nil, errors.New("微信支付生成失败")
+	}
+
+	// 1. 使用 `RegisterDownloaderWithPrivateKey` 注册下载器
+	err = downloader.MgrInstance().RegisterDownloaderWithPrivateKey(c, mchPrivateKey, mchCertificateSerialNumber, mchId, v3ApiSecret)
+	if err != nil {
+		return nil, err
+	}
+
+	// 2. 获取商户号对应的微信支付平台证书访问器
+	certificateVisitor := downloader.MgrInstance().GetCertificateVisitor(mchId)
+	// 3. 使用证书访问器初始化 `notify.Handler`
+	handler, err := notify.NewRSANotifyHandler(v3ApiSecret, verifiers.NewSHA256WithRSAVerifier(certificateVisitor))
+
+	transaction := new(payments.Transaction)
+	notifyReq, err = handler.ParseNotifyRequest(context.Background(), c.Request, transaction)
+	// 如果验签未通过，或者解密失败
+	if err != nil {
+		return nil, err
+	}
+
+	fmt.Println(transaction)
+	return notifyReq, nil
+}