private CloseableHttpResponse executeWithSignature(HttpRoute route, HttpRequestWrapper request,
                                                   HttpClientContext context, HttpExecutionAware execAware) throws IOException, HttpException {
  // 上传类不需要消耗两次故不做转换
  if (!(request.getOriginal() instanceof WechatPayUploadHttpPost)) {
    convertToRepeatableRequestEntity(request);
  }
  // 添加认证信息
  request.addHeader("Authorization",
      credentials.getSchema() + " " + credentials.getToken(request));

  // 执行
  CloseableHttpResponse response = mainExec.execute(route, request, context, execAware);

  // 对成功应答验签
  StatusLine statusLine = response.getStatusLine();
  if (statusLine.getStatusCode() >= 200 && statusLine.getStatusCode() < 300) {
    convertToRepeatableResponseEntity(response);
    if (!validator.validate(response)) {
      throw new HttpException("应答的微信支付签名验证失败");
    }
  }
  return response;
}
抛出：应答的微信支付签名验证失败，{"prepay_id":"wx23172422680548bac3a6955a0104660000"}已返回，但在提交提示订单重复