Cb/s Architecture - Implementation Based on cef3+mfc

One 、 Why use CB/S framework

1. I do VC++ It has been developed for many years , The biggest feeling is MFC The interface is too ugly 、UI Interface library calls are tedious （ Technical effectiveness personal view - Because the interface library is based on DirectUI Technologies do not support stand-alone window handles , For event acceptance /GDI mapping / And so on is very inconvenient , such as ：DULIB/SOUI/ Colorful interface library ）、 Need artists （ Small companies have limited costs ）、 The client upgrade is troublesome （ It needs to be compatible with various system versions ）... wait , No make complaints about it. ！！
2. Maybe you asked , For god horse does not use C# Wait for interface development , The main consideration is to be compatible with various system versions , Need to install .NET The environment is troublesome , If it is used in a single project with a self-service terminal and other environments, it is still good .
3. To solve the problem of beautiful interface 、 Easy to update 、 The old project is easy to transform , I decided to use CB/S Architecture to solve the above problems , I use MFC+ Google browser CEF3 Realization CB/S framework , Because at present, the company's clients are MFC frame , Therefore, it is convenient to quickly replace the old version client .

 

3、 ... and 、CB/S Architecture implementation

because CEF3 Support C++ And JS Call each other , So the client only needs to implement one js call c++ A common interface to the , Parameters can be passed through json Structural data control implements different functions and passes different types of parameters .

1、c++ call js It's simple , Call directly js Function is OK

Such as ：c++ call

Such as ：js Accept function

2、JS call c++, More trouble , You can refer to (https://blog.csdn.net/foruok/article/details/50573612)

According to personal preference , I only realize one CMDFunction Interface , adopt json Parameter control realizes different functions .

Such as ：JS call

Such as ：C++ Accept and implement （V8 The engine received CMDFunction After the parameters of the function , Occurs to the main window for processing json Data and realize corresponding functions ）

The final results are as follows ：

Two ： Introduce CB/S framework （ Reference resources ：https://www.cnblogs.com/liulun/p/3433003.html, It's very good ）

 

    1. What is the CB/S Applications for

 

    C/S Structured applications , The client side. / Application in the form of server , This kind of application needs to install a program on the client's computer , The client uses this program to communicate with the server , Complete certain operations .

    B/S Structured applications , It's a browser / Application in the form of server , This kind of application doesn't have to deploy anything on the client side , The customer only needs to communicate with the server through the browser , To complete certain operations .

     The advantages and disadvantages of the two types of programs are compared ：

Comparison content	C/S Structured applications	B/S Structured applications
Deploy	More difficult	convenient
upgrade	More difficult	convenient
Control permissions on the client	high	low
Data real time	high	Higher
Communication efficiency	high	Higher
Cross-platform sex	weak	strong

     It can be seen from the above that , Both forms of application have pros and cons . When the architect is making technology selection , Often according to the needs of the project , Compare the advantages and disadvantages of these two technical forms , Make the right choice .

     However , Most enterprise applications in China , It needs to be frequent 、 Timely update and upgrade 、 Higher client control permissions are required 、 Higher data real-time performance and higher communication efficiency are required , But I don't care about the deployment problems .

     At this time , The architect thinks about C/S Structural applications and B/S Structure of the application , Let the client nest a browser to communicate with the server , Complete certain operations . Such a program is CB/S Structured applications .

     The advantage of this is that the general business logic needs to be updated and upgraded on the server side , It can be displayed on the client . For client system permissions 、 be based on Socket Communication and other operations that cannot be completed by the browser core , It can be done by the client . The client can communicate directly with the server , You can also communicate with the server through the browser core .

     The following figure for CB/S Basic diagram of the structure application ：

 

At present, there is another kind between C/S and B/S Structure of applications between applications ：RIA Rich Internet applications , Applications with this structure are generally based on browser plug-ins , It has high client control permissions （ Than B/S Cheng Xugao , But more than C/S Program low ）, There are also many options for communication modes （ Not just based on HTTP agreement ）, At present, the more common RIA Technology has ：Adobe Of flex technology 、 Microsoft Silverlight technology 、Oracle Of WebStart technology . When the architect is making technology selection , These technologies can also be comprehensively weighed .

 

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