From e1060f1f6e2568c9ebd87f1c6c911c7cbc96377e Mon Sep 17 00:00:00 2001
From: wangjia <809946525@qq.com>
Date: Sat, 11 Jul 2026 16:00:05 +0800
Subject: [PATCH] =?UTF-8?q?fix(nezha):=20return=5Furl=20=E4=B8=BA=E7=A9=BA?=
 =?UTF-8?q?=E6=97=B6=E5=85=9C=E5=BA=95=E4=B8=BA=20notify=5Furl=20=E7=9A=84?=
 =?UTF-8?q?=20origin(=E5=93=AA=E5=90=92=E5=BF=85=E5=A1=AB)?=
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哪吒 pay/create 要求 return_url 必填;业务方未显式传时下单被拒(缺少参数 return_url)。
兜底用 notify_url 的 origin(pay 对外基址)保证合法非空。
---
 internal/provider/nezha/nezha.go | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/internal/provider/nezha/nezha.go b/internal/provider/nezha/nezha.go
index 4844a51..4becc3a 100644
--- a/internal/provider/nezha/nezha.go
+++ b/internal/provider/nezha/nezha.go
@@ -108,12 +108,21 @@ func (p *Provider) Create(ctx context.Context, req provider.CreateRequest) (*pro
 		payType = "alipay" // 未指定聚合渠道类型时的默认值(alipay 是最常见通道)
 	}
 
+	// 哪吒协议要求 return_url 必填(支付后浏览器跳回地址);业务方(pangolin)未显式传时,
+	// 兜底用 notify_url 的 origin(即 pay 对外基址,如 https://pay.yanmeiai.com),保证合法非空。
+	returnURL := req.ReturnURL
+	if returnURL == "" {
+		if u, e := url.Parse(p.notifyURL); e == nil && u.Host != "" {
+			returnURL = u.Scheme + "://" + u.Host
+		}
+	}
+
 	params := map[string]string{
 		"pid":          p.pid,
 		"type":         payType,
 		"out_trade_no": req.OutTradeNo,
 		"notify_url":   p.notifyURL,
-		"return_url":   req.ReturnURL,
+		"return_url":   returnURL,
 		"name":         req.Subject,
 		"money":        amount,
 		"timestamp":    strconv.FormatInt(time.Now().Unix(), 10),