在Qt中发送SOAP请求时出现ProtocolUnknowError

ProtocolUnknownError upon sending SOAP request in Qt

本文关键字：ProtocolUnknowError 请求 SOAP Qt      更新时间：2023-10-16

我正在做一个简单的例子，用Qt发送SOAP请求。尝试使用QNetwork资源并发送SOAP请求来获取一个国家的城市。

http://www.webservicex.net/globalweather.asmx?op=GetCitiesByCountry。

请帮忙；遗漏了什么。感谢您的任何指示/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();

输出

Support SSL:   true 
Lib Version Number:  268443855 
Lib Version String:  "OpenSSL 1.0.2l  25 May 2017" 
Lib Build Version Number:  268439647 
Lib Build Version String:  "OpenSSL 1.0.1e-fips 11 Feb 2013"

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();
}

引用的资源

  • http://www.qtcentre.org/threads/29856-sending-soap-request-using-QNetworkAccessManager-question

  • https://evileg.com/en/post/233/

  • Qt Web服务后查询

  • 使用Qt QNetworkAccessManager 发送HTTP标头信息

  • 使用QNetworkAccessManager 发送HTTP请求

  • https://en.wikipedia.org/wiki/List_of_HTTP_header_fields

调用manager.post(request, query.toUtf8());将覆盖您的request.setRawHeader("POST", "/globalweather.asmx HTTP/1.1");

如果您想使用自定义标头等，请使用sendCustomRequest

或者在QNetworkRequest中设置正确的Uri，并在QNetwworkAccessManager:：post方法中使用此请求。

//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"));
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