return_code=SUCCESS,return_msg=OK,result_code=FAIL,err_code_des=无效的openid,err_code=PARAM_ERROR

  { "appid", appid }, { "mch_id", mch_id }, { "nonce_str", nonceStr }, { "body", accStr },

                { "out_trade_no", Guid.NewGuid().ToString("N") }, { "total_fee",price },

                { "spbill_create_ip", request1.UserHostAddress.ToString() },

                { "notify_url", "https://www.maya-maya.cn:8083/api/WechatPay/payNotify" },

                { "trade_type", "JSAPI" }, { "openid", openid }//, { "sign", "" }

openid可以取到值，但是通不过。客户端如下

 wx.login({

      success: (res) => {

        if (res.code) {

          this.setData({openid: res.code});

          console.log(res.code);

          // 发起支付请求

          wx.request({