JavaWeb - MVC development model

MVC: a software development model, not a design pattern is a development model

1.JSP evolution of history

• Early only servlet, can only use the response output tag data, very troublesome
• After that came the JSP, Servlet simplifies the development of
• When the project is small easy to use JSP, when large projects, which have JSP code that have labels, nested loops, very confusing, hard to read and maintain
• after thatJava的Web开发借鉴MVC开发模式使得程序的设计更加合理

2.MVC mode

• MVC: M + V + C, is divided into three, decouple
• M: Model, models 完成具体业务操作, such as the package object to access the database
• V: View, view,展示数据
• C: Controller, controller, first 获取用户输入, to be followed 调用模型, but also将数据提交给视图让其展示
  

3.MVC advantages and disadvantages

3.1 Advantages

• 耦合性低，重用性高
• 有利于分工合作

3.2 Disadvantages

• Making the project architecture is complicated, high requirements for developers, not suitable for small projects