The C++ Web Framework (CWF) is a MVC web framework, Open Source, under MIT License, using C++ with Qt to be used in the development of web applications. The CWF was designed to consume few computational resources, such as memory and processing, and have a low response time for requests. With MVC (Model-View-Controller) architecture, where you can create classes to take care of the business layer (Model), use CSTL (C++ Server Pages Standard Tag Library) within the Web Pages to take care of data presentation (View) and use the controllers as a between the two layers (Controller). The CWF had inspirations in Java Servlets, JSTL and Spring Framework.
Because it is created in Qt, the C++ Web Framework can run on the same platforms supported by Qt:
- Desktop: Linux, OS X, Windows
- Embedded and RTOS: Linux, QNX, VxWorks, Windows
- Mobile: Android, iOS, Windows
The CWF has only one configuration file, called CPPWeb.ini and a policy of using only C++ and Qt in the development of its components in order to avoid the installation of numerous libraries and conflicts, maintain multiplatform characteristics, facilitate installation and keep the learning curve low in order to make web development as simple as possible, even for beginners.
Hello World - Example
#include "cppwebapplication.h"
class HelloWorldController : public CWF::Controller
{
public:
void doGet(CWF::Request &request, CWF::Response &response) const override
{
response.write("<html><body>Hello World!</body></html>");
}
};
//Call
//http://localhost:8080/hello
int main(int argc, char *argv[])
{
CWF::CppWebApplication server(argc, argv, "/PATH_TO_EXAMPLE/server/");
server.addController<HelloWorldController>("/hello");
return server.start();
}MVC (Model-View-Controller) - Example
//hellomodel.h (Model)
#include <QObject>
class HelloModel : public QObject
{
Q_OBJECT
public slots:
QString greeting() const
{
return "Hello User!";
}
};
//helloview.view (View)
<html>
<head>
<title>Hello</title>
</head>
<body>
<out value="#{model.greeting}"/>
</body>
</html>
//hellocontroller.h (Controller)
#include <cwf/controller.h>
#include <model/hellomodel.h>
class HelloController : public CWF::Controller
{
public:
void doGet(CWF::Request &request, CWF::Response &response) const override
{
HelloModel model;
request.addAttribute("model", &model);
request.getRequestDispatcher("/pages/helloview.view").forward(request, response);
}
};
//main.cpp
#include <cwf/cppwebapplication.h>
#include <controller/hellocontroller.h>
//Call
//http://localhost:8080/hello
int main(int argc, char *argv[])
{
CWF::CppWebApplication server(argc, argv, "/PATH_TO_EXAMPLE/server/");
server.addController<HelloController>("/hello");
return server.start();
}REST Web Service - Example
#include <cwf/sqlquery.h>
#include <cwf/cppwebapplication.h>
#include <cwf/sqldatabasestorage.h>
/*
* SQL Script
* create table countries (co_id serial primary key, co_name varchar unique);
* insert into countries (co_name) values ('BRAZIL'), ('UNITED STATES OF AMERICA'), ('CANADA');
*/
CWF::SqlDatabaseStorage storage("QPSQL", "localhost", "postgres", "postgres", "1234", 5432);
class CountriesController : public CWF::Controller
{
public:
void doGet(CWF::Request &request, CWF::Response &response) const override
{
CWF::SqlQuery qry(storage);
qry.exec("select * from countries");
response.write(qry.toJson());
}
};
//Call
//http://localhost:8080/countries
int main(int argc, char *argv[])
{
CWF::CppWebApplication server(argc, argv, "/PATH_TO_EXAMPLE/server/");
server.addController<CountriesController>("/countries");
return server.start();
}Installation
- Download and install Qt 5.5 or higher: https://www.qt.io/download-open-source/
- Open the terminal
- Install Qt Libraries: sudo apt-get install qt5-default (Linux)
- Make a project clone: git clone https://github.com/HerikLyma/CPPWebFramework.git
- cd CPPWebFramework/CPPWebFramework
- qmake CPPWebFramework.pro
- make
- make install (use sudo on Linux)
jemalloc optional installation (recommended)
- Install jemalloc: sudo apt-get install libjemalloc-dev (linux)
- Enable jemalloc in the .pro file: LIBS += -ljemalloc
Steps to test the C++ Web Framework's examples
- Open a .pro file from an example using Qt Creator
- Change the path in the main.cpp file: CWF::CppWebApplication a(argc, argv, "/PATH_TO_EXAMPLE/server/");
- Run the project
- Open your browser and type: http://localhost:8080 to check if the server is online
Site and documentation: https://www.cppwebframework.com
cppwebframework mailing list: https://groups.google.com/forum/#!forum/cppwebframework
Videos: https://www.youtube.com/channel/UCf-Jt44A1k-PQ6z_mhN2GYQ
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