General and Desktop QNetworkAccessManager를 통해 HTTP POST 하는 예제

QNetworkAccessManager 클래스를 사용하려면 프로젝트파일에 먼저 아래를 명시해야한다.

QT += network

아래 예제는 QNetworkAccessManager를 통해 HTTP POST 하는 방법을 보여준다.

void post(){
    // Build your JSON string as usual
    QByteArray jsonString = "{\"method\":\"AuthenticatePlain\",\"loginName\":\"username@domain.com\",\"password\":\"mypass\"}";
    
    // For your "Content-Length" header
    QByteArray postDataSize = QByteArray::number(jsonString.size());
    
    // Time for building your request
    QUrl serviceURL("https://www.superService.com/api/1.7/ssapi.asmx");
    QNetworkRequest request(serviceURL);
    
    // Add the headers specifying their names and their values with the following method : void QNetworkRequest::setRawHeader(const QByteArray & headerName, const QByteArray & headerValue);
    request.setRawHeader("User-Agent", "My app name v0.1");
    request.setRawHeader("X-Custom-User-Agent", "My app name v0.1");
    request.setRawHeader("Content-Type", "application/json");
    request.setRawHeader("Content-Length", postDataSize);
    
    // Use QNetworkReply * QNetworkAccessManager::post(const QNetworkRequest & request, const QByteArray & data); to send your request. Qt will rearrange everything correctly.
    QNetworkReply * reply = m_qnam->post(request, jsonString);
}