What is the difference between a Spring MVC method and Spring MVC Rest Method?
Spring MVC is part of Spring framework to make a Model-View-Controller. When you use it you have the choice to handle RESTful url or not.
Here is a good post to understand what is a RESTful service : https://stackoverflow.com/a/671132/3425744
Here you can find examples to make RESTful service with Spring MVC :
https://spring.io/guides/gs/rest-service/
http://www.programming-free.com/2014/01/spring-mvc-40-restful-web-services.html
Related
I know that the Spring Framework is a Framework, but the emergence of Spring Boot and Spring MVC makes me confused whether it is a framework or just one of the modules that Spring Framework has?
Yes.Spring is the most popular application framework for develop java base web application and spring framework core feature can be use any java application.
Also many people refer to Spring web MVC as a framework.
There is nothing wrong with that.
In other words, the spring web MVC is a part of the spring framework that is designed to implement web part in our application.
spring framework img
The Spring Web model-view-controller (MVC) framework is designed around a DispatcherServlet that dispatches requests to handlers, with configurable handler mappings, view resolution, locale and theme resolution as well as support for uploading files.
Spring Boot Framework is widely used to develop REST APIs
If analyzed in depth Spring Boot is a project that is built on the top of the Spring Framework. It provides an easier and faster way to set up, configure, and run both simple and web-based applications.
In short, Spring Boot is the combination of Spring Framework and Embedded Servers.
spring boot img
read more Web MVC
read more Spring boot
I got below instruction from spring boot doc:
Adding both spring-boot-starter-web and spring-boot-starter-webflux modules in your application results in Spring Boot auto-configuring Spring MVC, not WebFlux. This behavior has been chosen because many Spring developers add spring-boot-starter-webflux to their Spring MVC application to use the reactive WebClient. You can still enforce your choice by setting the chosen application type to SpringApplication.setWebApplicationType(WebApplicationType.REACTIVE)
My question is:
What if my application contains both MVC services and webflux services?
Is it supported?
For example:
I may have some existing admin service which is MVC based. Now I want to add some new services with webflux style.
No, this is not supported. Spring MVC and Spring WebFlux have different runtime models and don't support the same servers (for example, Spring WebFlux can be run with Netty, Spring MVC cannot).
Also, Spring MVC and Spring WebFlux are full web frameworks, meaning each has its own infrastructure that somehow duplicates the other. Deploying both in the same app would make it difficult to map requests (which requests should go where?).
I was looking to implement RestFul Web Services using Spring so in all Spring Projects list I saw Spring Web Services.
But Strangely it's just for SOAP and no Restful web services!
Where is project for RestFul web Services? Is there any JAX-RS implementation of Restful Web Services?
( Actually, It should be part of Spring Web Services project as its a popular web Services architecture as SOAP itself)
For Creating ReSTful web using spring, two ways are there :
1.One very easy way to use Spring MVC project. Spring provides annotations specificto ReSTful web services if you are using Spring MVC project like #RestController etc.
2.One can also create ReSTful web services by following JAX-RS methodology. Using spring-boot-starter-jersey project. Using this one can get other core functionalities of spring framework like DI, AOP etc.
I have a Spring web application - which doesn't use Spring-based GUI, but Wicket - and I would like to build contract-first REST services.
I already have a contract defined in Swagger and I generate model and API artifacts. Swagger codegen generates either Spring Boot artifacts, or Spring MVC ones.
My intention is to use ideally just a model, and maybe API (controllers) from this generated code. But up to my knowledge/research, there is no simple way to have just simple REST service without MVC/Boot boilerplate.
Therefore my questions are:
Is it possible to build lightweight Spring-based REST service, without having "heavy" dependency of full Spring MVC/Spring Boot?
If not, which approach is more lightweight? Spring Boot, or Spring MVC?
You are misinterpreting the Spring ecosystem.
Spring MVC is THE rest web and web service library within Spring portfolio.
The same way as Spring-WS is THE soap web service library.
They are very similar in architecture and style of use.
The fact that Spring MVC is bundled with Spring Framework does not change the situation.
Spring Boot does not bring any new REST offering. It is just a bootstrap mechanism to start Java web server with web app already deployed from a plain main() method. Therefore if you see "Building REST web services with Spring Boot", it just means that it is Spring MVC bootstrapped by Spring Boot.
Therefore, the question to what is more lightweight is straightforward: Spring MVC.
To answer the question #2:
The usage of Spring MVC is more lighweight, then usage of Spring Boot:
Size of the WAR archive:
6,1 MB for Spring MVC
9,2 MB for Spring Boot
Number of libraries in WAR archive:
12 for Spring MVC
28 for Spring Boot
I'm developing a RESTful service using ApacheCXF. I'm using Spring to inject the bean at each layer. I've three layer - REST layer, Service layer (Business logic layer) and DAO layer. I understand that we can annotate Service layer with #Service and DAO layer with #Repository but how do we annotate Rest class ? Do you suggest to annotate it with #Controller ? I've seen many examples where Rest class is annotated as #Controller if you're developing REST using Spring MVC. IMO, Spring MVC comes into play if you have deal with presentation layer as well (I may be wrong, don't have much idea about it) but this is just a web service which is hosted on one server to consume some data by some other application. I've not used Spring MVC in my past, but when would you suggest to develop REST services using Spring MVC? What's the benefit ?
If you're already using Spring, then Spring MVC is the way to write a RESTful service.
Prior to Spring 3, Spring MVC was very much focussed on traditional model-view-controller web apps that typically returned HTML to a web browser. Spring 3 added support for building RESTful services using Spring #Controllers typically configured to return JSON or XML payloads.
Rather than rehashing what's already been written, this blog post is a good introduction to the REST support that was added in Spring 3 and outlines a number of the benefits.