mir: fixed alipay client initialize error in old web service

internal/servants/web/routers/api/api.go

@@ -22,30 +22,28 @@ func Initialize() {
 	objectStorage = dao.ObjectStorageService()
 
 	if cfg.If("Alipay") {
-		initAlipay()
+		alipayClient = mustAlipayClient()
 	}
 }
 
-func initAlipay() {
+func mustAlipayClient() *alipay.Client {
 	s := conf.AlipaySetting
 	// 将 key 的验证调整到初始化阶段
 	client, err := alipay.New(s.AppID, s.PrivateKey, s.InProduction)
 	if err != nil {
 		logrus.Fatalf("alipay.New err: %s", err)
 	}
-
 	// 加载应用公钥证书
 	if err = client.LoadAppPublicCertFromFile(s.AppPublicCertFile); err != nil {
 		logrus.Fatalf("client.LoadAppPublicCertFromFile err: %s\n", err)
 	}
-
 	// 加载支付宝根证书
 	if err = client.LoadAliPayRootCertFromFile(s.RootCertFile); err != nil {
 		logrus.Fatalf("client.LoadAliPayRootCertFromFile err: %s\n", err)
 	}
-
 	// 加载支付宝公钥证书
 	if err = client.LoadAliPayPublicCertFromFile(s.PublicCertFile); err != nil {
 		logrus.Fatalf("client.LoadAliPayPublicCertFromFile err: %s\n", err)
 	}
+	return client
 }