错误描述Native支付通知验签失败 运行环境java：JDK8 示例代码public String wechatChannelPayNotifyV3(HttpServletRequest request, HttpServletResponse response) throws Exception { //获取微信POST过来反馈信息 BufferedReader bis = new BufferedReader(new InputStreamReader(request.getInputStream(), StandardCharsets.UTF_8)); String line = null; String body = ""; try { while ((line = bis.readLine()) != null) { result += line + "\r\n"; } } catch (Exception e) { logger.error(e.getMessage(), e); } finally { bis.close(); } //随机串 String nonceStr = request.getHeader("wechatpay-nonce"); //微信传递过来的签名 String signature = request.getHeader("wechatpay-signature"); //证书序列号（微信平台） String serialNo = request.getHeader("wechatpay-serial"); //时间戳 String timestamp = request.getHeader("wechatpay-timestamp"); try { // 构造 RequestParam RequestParam requestParam = new RequestParam.Builder() .serialNumber(serialNo) .nonce(nonceStr) .signature(signature) .timestamp(timestamp) .body(body) .build(); // 如果已经初始化了 RSAAutoCertificateConfig，可以直接使用 config // 初始化 NotificationParser Config config = new RSAAutoCertificateConfig.Builder() .merchantId(config.getMchId()) .privateKeyFromPath(config.getPrivateKeyStr()) .merchantSerialNumber(config.getPrivateKeyPwd()) .apiV3Key(config.getSecretKey()) .build(); NotificationParser parser = new NotificationParser((NotificationConfig) config); // 验签、解密并转换成 Transaction Transaction transaction = parser.parse(requestParam, Transaction.class); logger.info("transaction=" + JSON.toJSONString(transaction)); //记录日志信息 Transaction.TradeStateEnum state = transaction.getTradeState(); if (!StringUtils.equals("SUCCESS", state.toString())) { //通知微信回调失败 response.getWriter().write("<xml><return_code><![CDATA[FAIL]]></return_code></xml>"); } //通知微信回调成功 response.getWriter().write("<xml><return_code><![CDATA[SUCCESS]]></return_code></xml>"); } catch (Exception e) { logger.error(e.getMessage(), e); response.getWriter().write("<xml><return_code><![CDATA[FAIL]]></return_code></xml>"); } return ""; 异常信息Processing WechatPay notification,signature verification failed,signType[WECHATPAY2-SHA256-RSA2048]