fix: 支付宝签名使用原始值，改用表单自动提交方式
- 修复签名源：使用原始参数值（不进行 URL 编码） - 改用 HTML 表单自动提交方式代替服务器端 API 调用 - 避免 nginx 代理大响应体的问题
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@@ -128,9 +128,9 @@ fn rsa2_verify(content: &str, sign: &str, public_key_pem: &str) -> Result<bool,
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Ok(true)
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}
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// ===== Helper: 调用 alipay.trade.page.pay =====
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// ===== Helper: 生成支付宝支付表单 HTML =====
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async fn call_alipay_trade_page_pay(
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fn build_alipay_form_html(
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config: &AlipayConfig,
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out_trade_no: &str,
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total_amount: &str,
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@@ -138,11 +138,6 @@ async fn call_alipay_trade_page_pay(
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notify_url: &str,
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return_url: &str,
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) -> Result<String, String> {
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let client = reqwest::Client::builder()
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.timeout(std::time::Duration::from_secs(30))
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.build()
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.map_err(|e| format!("HTTP 客户端创建失败: {}", e))?;
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let biz_content = serde_json::json!({
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"out_trade_no": out_trade_no,
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"total_amount": total_amount,
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@@ -166,79 +161,44 @@ async fn call_alipay_trade_page_pay(
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params.insert("notify_url", notify_url);
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params.insert("return_url", return_url);
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// 构造待签名串
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// 构造待签名串（注意：签名源使用原始值，不做 URL 编码）
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let sign_source: String = params
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.iter()
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.map(|(k, v)| format!("{}={}", k, urlencoding(v)))
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.map(|(k, v)| format!("{}={}", k, *v))
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.collect::<Vec<_>>()
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.join("&");
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let sign = rsa2_sign(&sign_source, &config.private_key)?;
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// 构建 POST body
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let query: String = params
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.iter()
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.map(|(k, v)| format!("{}={}", urlencoding(k), urlencoding(v)))
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.chain(std::iter::once(format!("sign={}", urlencoding(&sign))))
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.collect::<Vec<_>>()
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.join("&");
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let resp = client
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.post(&config.gateway)
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.header("Content-Type", "application/x-www-form-urlencoded")
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.body(query)
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.send()
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.await
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.map_err(|e| format!("请求支付宝失败: {}", e))?;
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let body = resp.text().await.map_err(|e| format!("读取响应失败: {}", e))?;
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// 支付宝返回格式: alipay_trade_page_pay_response={...}&sign=xxx
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let parts: Vec<&str> = body.splitn(2, "&sign=").collect();
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if parts.len() != 2 {
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// 如果直接返回 HTML 表单（沙箱环境可能直接返回表单），直接返回
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if body.contains("<form") {
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return Ok(body);
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}
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return Err(format!(
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"支付宝响应格式异常: {}",
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&body[..body.len().min(300)]
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// 生成自动提交的表单 HTML
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let mut form_fields = String::new();
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for (k, v) in ¶ms {
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form_fields.push_str(&format!(
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r#"<input type="hidden" name="{}" value="{}" />"#,
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urlencoding(k),
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urlencoding(v)
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));
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}
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let json_str = parts[0]
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.strip_prefix("alipay_trade_page_pay_response=")
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.unwrap_or(parts[0]);
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let sign_from_alipay = parts[1];
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if !rsa2_verify(json_str, sign_from_alipay, &config.alipay_public_key)? {
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return Err("支付宝响应验签失败".to_string());
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}
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let json: serde_json::Value =
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serde_json::from_str(json_str).map_err(|e| format!("JSON 解析失败: {}", e))?;
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if json.get("code").and_then(|v| v.as_str()) != Some("10000") {
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let sub_msg = json
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.get("sub_msg")
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.and_then(|v| v.as_str())
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.unwrap_or("");
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return Err(format!(
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"支付宝接口错误: {} - {}",
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json.get("msg")
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.and_then(|v| v.as_str())
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.unwrap_or("未知"),
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sub_msg
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form_fields.push_str(&format!(
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r#"<input type="hidden" name="sign" value="{}" />"#,
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urlencoding(&sign)
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));
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}
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let form_html = json
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.get("form_html")
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.and_then(|v| v.as_str())
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.ok_or_else(|| "响应中缺少 form_html".to_string())?;
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let html = format!(
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r##"<!DOCTYPE html>
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<html>
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<head><meta charset="utf-8"><title>正在跳转支付宝...</title></head>
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<body>
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<form id="alipay" action="{}" method="post">
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{}
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</form>
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<script>document.getElementById('alipay').submit();</script>
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</body>
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</html>"##,
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config.gateway, form_fields
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);
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Ok(form_html.to_string())
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Ok(html)
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}
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// ===== 提取 JWT token =====
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@@ -663,16 +623,14 @@ function confirmMockPay() {{
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let total_amount_str = format!("{:.2}", pkg.amount as f64 / 100.0);
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match call_alipay_trade_page_pay(
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match build_alipay_form_html(
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&config,
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&order_no,
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&total_amount_str,
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pkg.display_name,
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¬ify_url,
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&return_url,
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)
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.await
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{
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) {
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Ok(form_html) => Ok(HttpResponse::Ok()
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.content_type("text/html; charset=utf-8")
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.body(form_html)),
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@@ -764,16 +722,14 @@ function confirmMockPay() {{
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let total_amount_str = format!("{:.2}", pkg.amount as f64 / 100.0);
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match call_alipay_trade_page_pay(
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match build_alipay_form_html(
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&config,
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&query.order_no,
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&total_amount_str,
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pkg.display_name,
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¬ify_url,
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&return_url,
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)
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.await
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{
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) {
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Ok(form_html) => Ok(HttpResponse::Ok()
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.content_type("text/html; charset=utf-8")
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.body(form_html)),
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