try {

          WXPay wxpay;

              WXPayConfigImpl wxPayConfig = new WXPayConfigImpl();             

  wxpay = new WXPay(wxPayConfig);

  Map<String, String> data = new HashMap<String,String>();           

          data.put("body", "tiaoshishenghuo");

          data.put("appid", wxPayConfig.getAppID());

          data.put("mch_id",wxPayConfig.getMchID());    

          data.put("out_trade_no", orderGid);      

          data.put("total_fee","1");          

          data.put("notify_url",notifyurl);

          data.put("spbill_create_ip", "123.12.12.123");

          data.put("openid", param.getOpenId());      

          data.put("trade_type", "JSAPI");

          data.put("nonce_str",nonceStr);

          String unisign = WXPayUtil.generateSignature(data, wxPayConfig.getKey());

          data.put("sign",unisign);

          logger.info(data.toString());             

          Map<String, String> mapresp = wxpay.unifiedOrder(data);

          logger.info(mapresp.toString());

} 

最后生成的数据为

{nonce_str=aGHsZMQOROWpFDKSGHDlrxhdnkar3uNW, out_trade_no=3dab120b8c444bd1bc18e91577da129d, openid=oKFQQwDhRIlRg71G6WfASmTUqd5w, appid=wxb171091d37ab3122, total_fee=1, sign=74D1BF93D3ECE551750707C8F6F7BC38, trade_type=JSAPI, body=tiaoshishenghuo, mch_id=1574429891, notify_url=https://tiaoshi.tiaoshishenghuo.com/, spbill_create_ip=123.12.12.123}

通过微信官网验证签名 sign ,完全正确

但是提交  Map<String, String> mapresp = wxpay.unifiedOrder(data);

一直返回 {return_msg=签名错误, return_code=FAIL}

JAVA SDK 用的是官网下载的 java_sdk_v3.0.9

请教是什么问题呢？