$merchantId = $config['mch_id']; // 从本地文件中加载「商户API私钥」，「商户API私钥」会用来生成请求的签名 $merchantPrivateKeyFilePath = $config['ssl_key']; $merchantPrivateKeyInstance = Rsa::from($merchantPrivateKeyFilePath, Rsa::KEY_TYPE_PRIVATE); // 「商户API证书」的「证书序列号」 $merchantCertificateSerial = $config['merchant_serial_number']; // 从本地文件中加载「微信支付平台证书」，用来验证微信支付应答的签名 $platformCertificateFilePath = $config['ssl_cers']; $platformPublicKeyInstance = Rsa::from($platformCertificateFilePath, Rsa::KEY_TYPE_PUBLIC); // 从「微信支付平台证书」中获取「证书序列号」 $platformCertificateSerial = PemUtil::parseCertificateSerialNo($platformCertificateFilePath); // 构造一个 APIv3 客户端实例 $instance = Builder::factory([ 'mchid' => $merchantId, 'serial' => $merchantCertificateSerial, 'privateKey' => $merchantPrivateKeyInstance, 'certs' => [ $platformCertificateSerial => $platformPublicKeyInstance, ], ]); /*$encryptor = static function(string $msg) use ($platformPublicKeyInstance): string { return Rsa::encrypt($msg, $platformPublicKeyInstance); };*/ try { $resp = $instance ->chain('v3/transfer/batches/out-batch-no/T020220525104305ML0/details/out-detail-no/T020220525104305FRC') ->get(['json' => [ 'out_batch_no' => 'T020220525104305ML0', 'out_detail_no' => 'T020220525104305FRC', ] ]); // echo $resp->getStatusCode(), PHP_EOL; echo $resp->getBody(), PHP_EOL; } catch (\Exception $e) { // 进行错误处理 // echo $e->getMessage(), PHP_EOL; if ($e instanceof \GuzzleHttp\Exception\RequestException && $e->hasResponse()) { $r = $e->getResponse(); // echo $r->getStatusCode() . ' ' . $r->getReasonPhrase(), PHP_EOL; echo $r->getBody(), PHP_EOL, PHP_EOL, PHP_EOL; } // echo $e->getTraceAsString(), PHP_EOL; }  运行返回结果： {"code":"SIGN_ERROR","detail":{"detail":{"issue":"sign not match"},"field":"signature","location":"authorization","sign_information":{"method":"GET","sign_message_length":152,"truncated_sign_message":"GET\n/v3/transfer/batches/out-batch-no/-t020220525104305-m-l0/details/out-detail-no/-t020220525104305-f-r-c\n1653459825\nbqd0VEpAV4HVV3R8KSZcbpYY5mtY5DwE\n\n","url":"/v3/transfer/batches/out-batch-no/-t020220525104305-m-l0/details/out-detail-no/-t020220525104305-f-r-c"}},"message":"错误的签名，验签失败"}

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