我有一個 web 服務，用 nodejs 編寫并開發 ac# 客戶端。我對 GET 方法沒有任何問題，但對 POST 有問題。這是我的客戶代碼 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); request.Method = methodType.ToString(); UTF8Encoding encoding = new UTF8Encoding(); if (!string.IsNullOrEmpty(content)) {    Byte[] byteArray = encoding.GetBytes(content);    request.ContentLength = byteArray.Length;    using (var dataStream = request.GetRequestStream())    {       dataStream.Write(byteArray, 0, byteArray.Length);    }  }   request.ContentType = "application/json";   try   {     using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())   {     using (var streamReader = new StreamReader(response.GetResponseStream()))      {         var  result = streamReader.ReadToEnd();      }        return response;    }     } .....這是我的服務器代碼router.post('/api/activation/activate', urlencodedParser, (req, res, next) => {    return new Promise(function (resolve, reject) {        (async function () {            try {                routerAppFeature.Delete(req.body.type.toUpperCase(), req.body.id);                console.log(req.body.HardwareId);                console.log(req.params.HardwareId)                console.log(req.query.HardwareId);                var result = { "data": "Okay :)" + req.body.HardwareId, "errorCode": "-1" };                res.json(result);            } catch (error) {                console.log('!!Error in activate method: ' + error);                return reject(error);            }        })();    }).catch(error => {        var err = { "message": error.message, "errorCode": "1" };        res.json(err);    });});所以我的問題是執行using (var dataStream = request.GetRequestStream())后我的 post 方法被觸發并且 req.body 為空，因為在觸發該方法之前我沒有傳遞任何參數..我怎么解決這個問題？