How do I run POCO C++ server pages?

StackOverflow https://stackoverflow.com/questions/7611416

  •  05-02-2021
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Question

I'm a beginner in C++ server pages. I have tried C++ Server Pages by micronovae, but couldnt connect ODBC it used to give link error "undefined reference to SQLAllocHandle@12", I could not resolve it. Similar to micronovae,POCO also provides C++ Server Pages. so thought of try it. I tried one sample from http://pocoproject.org/docs/PageCompilerUserGuide.html#0 .

What I did is, firstly created a file called TimeHandler.html along with following contents inside it:

<%@ page class="TimeHandler" %>
<%!
    #include "Poco/DateTime.h"
    #include "Poco/DateTimeFormatter.h"
    #include "Poco/DateTimeFormat.h"


    using Poco::DateTime;
    using Poco::DateTimeFormatter;
    using Poco::DateTimeFormat;
%>

<%
    DateTime now;
    std::string dt(DateTimeFormatter::format(now, DateTimeFormat::SORTABLE_FORMAT));
%>
<html>
<head>
<title>Time Sample</title>
</head>
<body>
<h1>Time Sample</h1>
<p><%= dt %></p>
</body>
</html>

Then, I used the commandline Pagecompiler tool, i.e., CPSPCD from command prompt, and it generated following two files,..

1) TimeHandler.cpp

#include "TimeHandler.h"
#include "Poco/Net/HTTPServerRequest.h"
#include "Poco/Net/HTTPServerResponse.h"
#include "Poco/Net/HTMLForm.h"


#line 2 "C:\\Users\\Admin\\Desktop\\data structures\\vinz\\TimeHandler.html"

    #include "Poco/DateTime.h"
    #include "Poco/DateTimeFormatter.h"
    #include "Poco/DateTimeFormat.h"


    using Poco::DateTime;
    using Poco::DateTimeFormatter;
    using Poco::DateTimeFormat;


void TimeHandler::handleRequest(Poco::Net::HTTPServerRequest& request, Poco::Net::HTTPServerResponse& response)
{
   response.setChunkedTransferEncoding(true);
   response.setContentType("text/html");

   Poco::Net::HTMLForm form(request, request.stream());
   std::ostream& responseStream = response.send();
   responseStream << "";
   responseStream << "\n";
   responseStream << "";
   responseStream << "\n";
   responseStream << "\n";
   responseStream << "";
#line 13 "C:\\Users\\Admin\\Desktop\\data structures\\vinz\\TimeHandler.html"

    DateTime now;
    std::string dt(DateTimeFormatter::format(now, DateTimeFormat::SORTABLE_FORMAT));
   responseStream << "\n";
   responseStream << "<html>\n";
   responseStream << "<head>\n";
   responseStream << "<title>Time Sample</title>\n";
   responseStream << "</head>\n";
   responseStream << "<body>\n";
   responseStream << "<h1>Time Sample</h1>\n";
   responseStream << "<p>";
#line 23 "C:\\Users\\Admin\\Desktop\\data structures\\vinz\\TimeHandler.html"
   responseStream << ( dt );
   responseStream << "</p>\n";
   responseStream << "</body>\n";
   responseStream << "</html>";
}

2) TimeHandler.h

#ifndef TimeHandler_INCLUDED
#define TimeHandler_INCLUDED


#include "Poco/Net/HTTPRequestHandler.h"


class TimeHandler: public Poco::Net::HTTPRequestHandler
{
public:
   void handleRequest(Poco::Net::HTTPServerRequest& request, Poco::Net::HTTPServerResponse& response);
};


#endif // TimeHandler_INCLUDED

And then I created new project in VS 2010 and added these two files and compiled. There were few issues, but later I updated environment variables and it went on fine. But there is one last error, "....Unresolved symbol _main....".

There was no main inside it.. so how do I run this program?? if not this program, atleast would someone give an overview as to how to embed C++ code inside html, compile and run it..!

Was it helpful?

Solution

The samples you show only create the individual page (handler) implementation.

You need to add an actual HTTPServer to serve that page.

See: http://pocoproject.org/docs/Poco.Net.HTTPServer.html

There is a sample in the sources download under

 poco-1.4.2p1.zip\poco-1.4.2p1\Net\samples\HTTPTimeServer

You should be able to get something working from there

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