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Spring MVC Overview



Spring MVC is a java framework that is used to build web applications. It uses  Model-View-Control design pattern and implements basic features of core spring framework such as Inversion of Control, Dependency Injection

How Spring MVC works.




When the client sends a request the request is captured by the Dispatcher Servlet which act as the front Controller of the system. With the help of helpers( Handler Mappings, Controller, View Resolver, View) front controller will responds the client with HTML and data.

When the Dispatcher Servlet gets the request from the client, the request is immediately sent to Handler Mappings. Handler Mapping will scan the URL and will respond to the Dispatcher Servlet with address of the class that can generate data for the web page which the end user has requested. 

With the respond of the Handler Mapping Dispatcher Servlet will forward the request to the Controller, so that the data will be prepared and creates a java object to hold the data. It might contain some business logic to generate data or might get data from the database straightly or might use some other java classes to generate data. The created java object and HTML file name will be sent back to the Dispatcher Servlet as the response.

With the respond of the Controller Dispatcher Servlet will access the HTML file using View Resolver. View Resolver will retrieve the java object from the Dispatcher Servlet and embed it with the HTML code with the desired fashion and will return it to the Dispatcher Servlet.

Finally Dispatcher Servlet will send the response of the View Resolver to the client browser and will display. It is called as the View component. View component is typically a JSP page.

Java object that holds the data is know as the model component.

Controller component will be sending the object with the name of the HTML file.

Advantages of Spring MVC Over Struts2. 


  • Clear separation between controllers, Java Bean models and views that is not possible in Struts.
  • Spring MVC is more flexible as compared to struts.
  • Spring can be used with different platforms like Velocity, XLST or various other view technologies.
  • There is nothing like ActionForm in Spring, but binds directly to the domain objects.












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