Principle of SSM framework

ssm Frame principle

ssm yes springmvc+spring+mybaits Frame set .
Use spring mvc Responsible for request forwarding and view management ;spring Implement business object management ;mybaits Persistence as data as data objects

Spring MVC

m-> Model
v-> View , Responsible for presenting the data of the model and generating html Output
c->controller, Responsible for handling customer requests , Data response to the front end
DAO layer ： It mainly works on the data persistence layer , Responsible for some tasks of contacting the database
1.DAO The design of the layer is first of all design DAO The interface of .
2. And then again Spring The implementation class of this interface is defined in the configuration file of .
3. Then you can call this interface in the module to process data business , You don't need to worry about which implementation class of this interface is , Very clear structure .
4.DAO Data source configuration for layer , And the database connection parameters are spring Configuration in the configuration file .
Service layer ： Logical application design of business module
Controller layer ： Responsible for the control of specific business module process
View layer ： The layer and the Controller The combination is relatively close , We need to combine the two to develop together .View Floor is mainly responsible for the front desk jsp The presentation of the page .

Spring

spring Control all containers

Mybaits

about jdbc Encapsulation , Make the underlying operation of the database transparent .