[英]QNetworkRequest returning null
我必須使用發布到Google腳本的方法(請參見下文),並且我希望在腳本的末尾收到來自該腳本的反饋,表明一切正常。
function doPost(e){
var idm = e.parameter.idm;
var sheet_purchaseHistory = SpreadsheetApp.getActive().getSheetByName('purchaseHistory');
var date = new Date();
var time = Utilities.formatDate(date, 'Asia/Tokyo', 'yyyy/MM/dd HH:mm:ss');
sheet_purchaseHistory.getRange(sheet_purchaseHistory.getLastRow()+1, 1).setValue(time);
sheet_purchaseHistory.getRange(sheet_purchaseHistory.getLastRow(), 2).setValue(mailadress);
return ContentService.createTextOutput(JSON.stringify({'status': 'success'})).setMimeType(ContentService.MimeType.JSON);
}
在我的cpp代碼中,我有:
標頭(.h)
QNetworkRequest request;
QNetworkAccessManager *manager;
QByteArray ba;
QNetworkReply* reply;
構造函數:
manager = new QNetworkAccessManager(this); // I tried with and without parsing the (this)
request.setUrl(QUrl("https://script.google.com/macros/s/AKfycbzhHBpZ8jMfa2bwE_A0lQJNqOzVl894dcjkch_-0mNC6EX9usn1/exec"));
在函數內部:
manager->setRedirectPolicy(QNetworkRequest::NoLessSafeRedirectPolicy);
request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
QUrlQuery postData;
postData.addQueryItem("idm", "string");
QNetworkReply *rp = manager->post(request,postData.toString(QUrl::FullyEncoded).toUtf8());
QEventLoop loop;
connect(rp, SIGNAL(finished()), &loop, SLOT(quit())); //readready SIGNAL also tried
loop.exec();
QByteArray data = rp->readAll();
QString dataReply(data);
qDebug() << dataReply;
發生的事情是我總是收到空值。 我已經使用QUrlQuery和ByteArray嘗試了幾種組合,例如不同的信號(readyread,finished ...),設置了不同的標頭,但沒有成功。
我還注意到,當我的參數在請求中時( https:// address?parameters = string ),我可以收到返回值。 (在這種情況下,請從“ postdate”中刪除參數,並將其包含在post“ req”中
QNetworkReply *rep = man->post(req,postdata);
RESTESTTEST的打印:我嘗試使用https://resttesttest.com/進行發布,並且工作正常。 它給出了以下評論
有人可以幫我嗎?
借助以下使用curl的命令,我能夠分析請求:
curl --trace-ascii output.txt \
-d "idm=0123" \
-L "https://script.google.com/macros/s/AKfycbzhHBpZ8jMfa2bwE_A0lQJNqOzVl894dcjkch_-0mNC6EX9usn1/exec"
.txt文件中的以下行:
# ...
== Info: Issue another request to this URL: 'https://script.googleusercontent.com/macros/echo?user_content_key=odFvp9PfkjN-H6-IhBUWhj1XC4LbgGXq3moew78NtUkeQAI4UCwjEaz33jH1p_VSrMLvl9R-1p2f-LCuIURpcA9ynEuB76Kdm5_BxDlH2jW0nuo2oDemN9CCS2h10ox_1xSncGQajx_ryfhECjZEnDmqvNuuY9_pIuNLYjrNDt9AJiVy2Q9_jt9ucsQKYIYmzKj2_WuA-BZmfTxlnQZT_cbqvF_hZXXo&lib=MbJJIMSCHwBgrN--y_1G9PbYl-ov70HvX'
== Info: Switch from POST to GET
# ...
這告訴我們,重定向已從POST更改為GET,因此繼續嘗試POST的屬性QNetworkRequest :: NoLessSafeRedirectPolicy沒有考慮到它。 因此解決方案是手動處理重定向。
QNetworkAccessManager manager;
QNetworkRequest request;
QUrl url("https://script.google.com/macros/s/AKfycbzhHBpZ8jMfa2bwE_A0lQJNqOzVl894dcjkch_-0mNC6EX9usn1/exec");
request.setUrl(url);
request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
QUrlQuery postData;
postData.addQueryItem("idm", "string");
QNetworkReply *reply_post = manager.post(request, postData.toString(QUrl::FullyEncoded).toUtf8());
QEventLoop loop;
QObject::connect(reply_post, &QNetworkReply::finished, &loop, &QEventLoop::quit);
loop.exec();
QNetworkRequest redirect_request;
redirect_request.setUrl(reply_post->attribute(QNetworkRequest::RedirectionTargetAttribute).toUrl());
reply_post->deleteLater();
QNetworkReply *reply_get = manager.get(redirect_request);
QObject::connect(reply_get, &QNetworkReply::finished, &loop, &QEventLoop::quit);
loop.exec();
qDebug()<< reply_get->readAll();
reply_get->deleteLater();
輸出:
OK
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