C++ 在Qt中发送SOAP请求时出现ProtocolUnknownError

我正在做一个简单的例子来发送Qt中的SOAP请求。尝试使用QNetwork资源并发送SOAP请求以获取某个国家的城市

请帮忙；遗漏了什么。感谢您的指点/输入

构建机器-Linux Debian

Qt版本-5.7

SSL-1.0.2可用

qDebug() << "Support SSL:  " << QSslSocket::supportsSsl()
         << "\nLib Version Number: " << QSslSocket::sslLibraryVersionNumber()
         << "\nLib Version String: " << QSslSocket::sslLibraryVersionString()
         << "\nLib Build Version Number: " << QSslSocket::sslLibraryBuildVersionNumber()
         << "\nLib Build Version String: " << QSslSocket::sslLibraryBuildVersionString();

运行代码时出错

Network error:  QNetworkReply::NetworkError(ProtocolUnknownError)

代码

#include <QObject>
#include <QtNetwork>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>

int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);

    QNetworkAccessManager manager;

    QNetworkRequest request;

    //Set SOAP headers

    request.setRawHeader("POST", "/globalweather.asmx HTTP/1.1");
    request.setRawHeader("Content-Type", "text/xml;charset=UTF-8");
    request.setRawHeader("Content-Length", "1024");
    request.setRawHeader("SOAPAction", "http://www.webserviceX.NET/GetCitiesByCountry");
    //request.setRawHeader("Host", "www.webservicex.net");
    request.setUrl(QUrl("www.webservicex.net"));


    // Prepare SOAP request XML

    QString query =
    "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
    "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"
    "<soap:Body>"
    "<GetCitiesByCountry xmlns=\"http://www.webserviceX.NET\">"
    "<CountryName>Australia</CountryName>"
    "</GetCitiesByCountry>"
    "</soap:Body>"
    "</soap:Envelope>";

    QNetworkReply* reply = manager.post(request, query.toUtf8());

    QEventLoop eventLoop;

    QObject::connect(reply, SIGNAL(finished()), &eventLoop, SLOT(quit()));
    eventLoop.exec();

    if (reply->error() != QNetworkReply::NoError)    
        qDebug() << "Network error: " << reply->error();
    else    
        qDebug() << reply->readAll();    

    return app.exec();
 }

#包括
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int main（int argc，char*argv[]）
{
QCore应用程序应用程序（argc、argv）；
QNetworkAccessManager；
QNetworkRequest请求；
//设置SOAP头
setRawHeader（“POST”，“/globalweather.asmx HTTP/1.1”）；
setRawHeader（“内容类型”，“text/xml；charset=UTF-8”）；
setRawHeader（“内容长度”，“1024”）；
request.setRawHeader（“SOAPAction”http://www.webserviceX.NET/GetCitiesByCountry");
//setRawHeader（“主机”，“www.webservicex.net”）；
setUrl（QUrl（“www.webservicex.net”）；
//准备SOAP请求XML
QString查询=
""
""
""
""
“澳大利亚”
""
""
"";
QNetworkReply*reply=manager.post（request，query.toUtf8（））；
QEventLoop事件循环；
连接（应答、信号（finished（））、事件循环、插槽（quit（））；
eventLoop.exec（）；
如果（回复->错误（）！=QNetworkReply:：无错误）
qDebug（）调用
manager.post（request，query.toUtf8（））；
将覆盖您的
request.setRawHeader（“post”，“/globalweather.asmx HTTP/1.1”）；

如果要使用自定义标题等，请使用

或者在中设置正确的Uri并在方法中使用此请求

在这里使用Wireshark可以准确地找出Qt发送给服务器的内容。也就是说，SOAP已经有近二十年的历史了。现代代码应该使用RESTfulWebAPI。
#include <QObject>
#include <QtNetwork>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>

int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);

    QNetworkAccessManager manager;

    QNetworkRequest request;

    //Set SOAP headers

    request.setRawHeader("POST", "/globalweather.asmx HTTP/1.1");
    request.setRawHeader("Content-Type", "text/xml;charset=UTF-8");
    request.setRawHeader("Content-Length", "1024");
    request.setRawHeader("SOAPAction", "http://www.webserviceX.NET/GetCitiesByCountry");
    //request.setRawHeader("Host", "www.webservicex.net");
    request.setUrl(QUrl("www.webservicex.net"));


    // Prepare SOAP request XML

    QString query =
    "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
    "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"
    "<soap:Body>"
    "<GetCitiesByCountry xmlns=\"http://www.webserviceX.NET\">"
    "<CountryName>Australia</CountryName>"
    "</GetCitiesByCountry>"
    "</soap:Body>"
    "</soap:Envelope>";

    QNetworkReply* reply = manager.post(request, query.toUtf8());

    QEventLoop eventLoop;

    QObject::connect(reply, SIGNAL(finished()), &eventLoop, SLOT(quit()));
    eventLoop.exec();

    if (reply->error() != QNetworkReply::NoError)    
        qDebug() << "Network error: " << reply->error();
    else    
        qDebug() << reply->readAll();    

    return app.exec();
 }

    //request.setRawHeader("POST", "/globalweather.asmx HTTP/1.1");
    request.setRawHeader("Content-Type", "text/xml;charset=UTF-8");
    request.setRawHeader("Content-Length", "1024");
    request.setRawHeader("SOAPAction", "http://www.webserviceX.NET/GetCitiesByCountry");
    //request.setRawHeader("Host", "www.webservicex.net");
    request.setUrl(QUrl("http://www.webservicex.net/globalweather.asmx"));