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修复微信小程序同城配送API签名错误（错误代码40234） #3780

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修复微信小程序同城配送API签名错误（错误代码40234） #3780

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Copilot Nov 28, 2025
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修复微信小程序同城配送API签名错误（添加RSA私钥序列号到签名payload和请求头）
Copilot Nov 28, 2025
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7 changes: 6 additions & 1 deletion weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/api/impl/BaseWxMaServiceImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -912,6 +912,10 @@ public String postWithSignature(String url, JsonObject jsonObject) throws WxErro
String rndStr = UUID.randomUUID().toString().replace("-", "").substring(0, 30);
String aesKey = this.getWxMaConfig().getApiSignatureAesKey();
String aesKeySn = this.getWxMaConfig().getApiSignatureAesKeySn();
String rsaKeySn = this.getWxMaConfig().getApiSignatureRsaPrivateKeySn();
if (rsaKeySn == null || rsaKeySn.isEmpty()) {
throw new SecurityException("ApiSignatureRsaPrivateKeySn不能为空，请检查配置");
}

jsonObject.addProperty("_n", rndStr);
jsonObject.addProperty("_appid", appId);
Expand Down Expand Up @@ -956,7 +960,7 @@ public String postWithSignature(String url, JsonObject jsonObject) throws WxErro
String requestJson = reqData.toString();

// 计算签名 RSA
String payload = urlPath + "\n" + appId + "\n" + timestamp + "\n" + requestJson;
String payload = urlPath + "\n" + appId + "\n" + timestamp + "\n" + rsaKeySn + "\n" + requestJson;
byte[] dataBuffer = payload.getBytes(StandardCharsets.UTF_8);
RSAPrivateKey priKey;
try {
Expand Down Expand Up @@ -985,6 +989,7 @@ public String postWithSignature(String url, JsonObject jsonObject) throws WxErro
header.put("Wechatmp-Signature", signatureString);
header.put("Wechatmp-Appid", appId);
header.put("Wechatmp-TimeStamp", String.valueOf(timestamp));
header.put("Wechatmp-Serial", rsaKeySn);
log.debug("发送请求uri:{}, headers:{}, postData:{}", url, header, requestJson);
WxMaApiResponse response =
this.execute(ApiSignaturePostRequestExecutor.create(this), url, header, requestJson);
Expand Down