在发布 json object 并将 content-type 设置为 application/json 时出现不受支持的媒体类型错误

Question

我正在做一个小测试项目，目标是通过 Keycloak API 登录并获取我的访问令牌。我面临的问题是我收到 415 错误“不受支持的媒体类型”，如下所示： HTTP error

我已经尝试将内容类型 header 设为

text/plain
application/x-www-form-urlencoded
application/json

这是我的代码：

void MainWindow::on_realmButton_clicked()
{

    QNetworkRequest req{QUrl(QString("http://localhost:8080/realms/demo/protocol/openid-connect/token"))};

    req.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");


    QJsonObject body;

    body["client_id"] = "demo-client";
    body["grant_type"] = "password";
    body["client_secret"] = "CLIENT_SECRET";
    body["scope"] = "openid";
    body["username"] = "user";
    body["password"] = "password";

    QJsonDocument document(body);
    QByteArray bytes = document.toJson();
    qDebug() << "JSON Object :" << bytes.toStdString().c_str();

    netReply = netManager->post(req, bytes);

    connect(netReply, &QNetworkReply::readyRead, this, &MainWindow::readData);
    connect(netReply, &QNetworkReply::finished, this, &MainWindow::finishReading);

}

Answer 1

尝试类似的东西。编辑：为清楚起见添加此注释。 “protocol/openid-connect/token 端点需要形式编码的正文，而不是 JSON 正文。”

req.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");

QUrl body;

body.addQueryItem("client_id","demo-client");
.
.
.
networkManager->post(req, body.toString(QUrl::FullyEncoded).toUtf8());

在发布 json object 并将 content-type 设置为 application/json 时出现不受支持的媒体类型错误

Getting an unsupported media type error while having a json object posted and content-type set to application/json

c++

qt

keycloak