json: cannot unmarshal number into Go struct field xx of type string

golang后台接口接收数据错误:

json: cannot unmarshal number into Go struct field PayCoinOrderInsertReq.deductionsSum of type string

处理错误时需要传输的值转为string

Map<String, Object> getRequestData() => {
  // 'id':UserData.UserInfoData.data?.id??0,
  'userId': UserData.UserInfoData.data?.userId ?? '',
  'coinName': coinName??'',
  'coinAddress': coinAddress??'',
  'money': _coinNumberController.text,
  'usdtRate': '${AppBaseData.exchangeRate}',
  'fee': '${AppBaseData.fee}',
  'deductionsSum':'$sumMoney',
};

userId,  := map1["userId"].(string)
token,  := map1["token"].(string)
coinName,  := map1["coinName"].(string)
coinAddress,  := map1["coinAddress"].(string)
money,  := map1["money"].(string) //交易金额
usdtRate,  := map1["usdtRate"].(string)
fee,  := map1["fee"].(string)
deductionsSum,  := map1["deductionsSum"].(string)
if !check.CheckTakenUnique(token, userId, c) 
{return
}