What is business logic?

The business logic is relative to the presentation logic and is mainly used in the MVC mode.

V represents the view, that is, the display logic, which is equivalent to the JSP part of a B/S structure system. It is mainly used for input data, display results, and so on, that is, the interface part.

M represents the model, that is, the business logic. It is mainly used to connect to the database, process data, and perform numerical computation. The expression format is JavaBean or EJB.

C stands for the Controller, that is, the control layer, which is used for data interaction between the model layer and the view layer. It refers to the number of inputs in the view (that is, the interface ).