The document is a training session outline for Spring MVC, covering topics such as the MVC pattern, Spring's architecture, and various programming annotations like @Controller and @RequestMapping. It explains how to set up a basic web application using Spring MVC and includes integration with Hibernate. The session also outlines advantages of Spring MVC 3.0 and mentions topics to be covered in future sessions, including frontend development fundamentals.

1. Java & JEE Training
Session 46 – Spring MVC

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Review
• Spring framework
• Inversion of Control
• Dependency Injection – Two types
• Defining beans using XML
• Inheriting beans
• Auto-wiring
• Annotations based configuration
• Java based configuration
• Spring AOP

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Agenda
• Spring MVC
• Spring MVC – Hibernate Integration

4. Java & JEE Training
Spring MVC

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Spring MVC Step-by-step
• Refer the official Spring documentation:
https://docs.spring.io/docs/Spring-MVC-step-by-step/

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MVC…
• What is MVC pattern? Review…
• The Model encapsulates the application data and in general they will
consist of POJO.
• The View is responsible for rendering the model data and in general it
generates HTML output that the client's browser can interpret.
• The Controller is responsible for processing user requests and building
appropriate model and passes it to the view for rendering.

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Spring MVC
• Spring MVC tutorial provides an elegant solution to use MVC in Spring
framework by the help of DispatcherServlet.
• In Spring Web MVC, DispatcherServlet class works as the front controller. It
is responsible to manage the flow of the Spring MVC application.
• The @Controller annotation is used to mark the class as the controller in
Spring 3.
• The @RequestMapping annotation is used to map the request url. It is
applied on the method.

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Advantages of Spring 3.0 MVC
• Supports RESTful URLs.
• Annotation based configuration.
• Supports to plug with other MVC frameworks like Struts etc.
• Flexible in supporting different view types like JSP, velocity, XML, PDF etc.,

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MVC – An overview
Controller
View
Model
Request
Response

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Spring MVC- Basic Architecture
Dispatch
erServlet
(Front
controller)
HandlerMapping
(Map of URL and
controllers)
Controller
(Responsible to
handle request)
View (JSP, XML,
Velocity)
Model
(POJO)
Request
1
5
4
3
2
www.JAVA9S.c

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Spring MVC Demo – Hello World
• Basic Demo…

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Spring MVC Annotations
• @Controller
• @RequestMapping
• @RequestParam
• @PathVariable
• @ResponseBody

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@RequestMapping with Class
@Controller
@RequestMapping("/home")
public class HomeController {
}

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@RequestMapping with Method
@RequestMapping(value="/student")
@ResponseBody
public String method0(){
return “some string";
}

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@RequestMapping with Multiple URI
@RequestMapping(value={"/student",“/student/sciencestudent"})
@ResponseBody
public String method1(){
return “somestring";
}

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@RequestMapping with HTTP Method
@RequestMapping(value="/student", method=RequestMethod.POST)
@ResponseBody
public String method2(){
return “some string";
}
@RequestMapping(value="/student2",
method={RequestMethod.POST,RequestMethod.GET})
@ResponseBody
public String method3(){
return “some string";
}

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@RequestMapping with Headers
@RequestMapping(value="/student", headers="name=Pawan")
@ResponseBody
public String method4(){
return “something";
}
@RequestMapping(value="/method5", headers={"name=Pawan", "id=1"})
@ResponseBody
public String method5(){
return “some return value";
}

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@RequestMapping with @PathVariable
@RequestMapping(value="/student/{id}")
@ResponseBody
public String method7(@PathVariable("id") int id){
return “the value with id="+id;
}

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@RequestMapping with @RequestParam for URL parameters
@RequestMapping(value="/student") //e.g.
http://....appname/student?id=111
@ResponseBody
public String method9(@RequestParam("id") int id){
return “student with id= "+id;
}

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@RequestMapping fallback method (404)
@RequestMapping("*")
@ResponseBody
public String fallbackMethod(){
return "fallback method";
}

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Spring – More Demo….
• Demo…

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Topics to be covered in next session
• Frontend development fundamentals HTML, CSS, JS, jQuery, AJAX

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Thank you!