Difference Betwixt @Restcontroller As Well As @Controller Notation Inwards Jump Mvc As Well As Rest

The @RestController musical note inwards Spring MVC is zip but a combination of @Controller in addition to @ResponseBody annotation. It was added into Spring 4.0 to brand the evolution of RESTful Web Services inwards Spring framework easier. If yous are familiar alongside the REST spider web services yous know that the cardinal departure betwixt a spider web application in addition to a REST API is that the response from a spider web application is mostly thought (HTML + CSS + JavaScript) spell REST API exactly render information inwards shape of JSON or XML. This departure is too obvious inwards the @Controller in addition to @RestController annotation. The project of @Controller is to create a Map of model object in addition to honour a thought but @RestController but render the object in addition to object information is straight written into HTTP response equally JSON or XML.

This tin shipping away too survive done alongside traditional @Controller in addition to occupation @ResponseBody musical note but since this is the default behaviour of RESTful Web services, Spring introduced @RestController which combined the behaviour of @Controller in addition to @ResponseBody together.

In short, next 2 code snippet are equal inwards Spring MVC:

@Controller @ResponseBody public class MVCController {     .. your logic }  @RestController public class RestFulController {    .... your logic }

Obviously, everybody would similar to declare exactly 1 musical note instead of two. Also, the @RestController is to a greater extent than obvious in addition to telling than the previous two.

What are @Controller in addition to @RestController inwards Spring?

In Spring framework, Influenza A virus subtype H5N1 Controller is a course of report which is responsible for preparing a model Map alongside information to survive displayed past times the thought equally good equally choosing the correct thought itself. It tin shipping away too straight write into response current past times using @ResponseBody musical note in addition to consummate the request.

The behaviour of writing straight into response current is really useful for responding calls to RESTful spider web services because their nosotros exactly render information instead of returning a thought equally explained inwards my before postal service nearly how Spring MVC industrial plant internally.

If yous receive got developed RESTful Web services before Spring iv e.g. inwards Spring three or Spring 3.1, yous would receive got been familiar alongside using a combination of @Controller in addition to @ResponseBody to create a RESTful response. Spring guys receive got cognizant of this issues in addition to created @RestController.

Now, yous don't demand to occupation @Controller in addition to @RestponseBody annotation, instead yous tin shipping away occupation @RestController to render the same functionality. In short, it is a convenience controller which combines behaviour of @Controler in addition to @Response trunk into one.

You tin shipping away farther bring together Eugen Paraschiv's REST alongside Spring Master class if yous are to a greater extent than curious nearly learning the advanced techniques to prepare RESTFul Web Service inwards Spring.

Difference betwixt @RestController in addition to @Controller inwards Spring

Now that, yous are familiar alongside both of these annotations, it's a proficient fourth dimension to analyze about factual departure betwixt @RestController in addition to @Controler. This is a really of import concept, non exactly from Interview dot of thought but too from Spring Core in addition to Spring Web Application developer Certification. If yous are preparing for Spring certifications, yous should familiar alongside such subtle differences. Additionally, yous tin shipping away too receive got a await at gratis Spring tests to acquire an thought nearly examination format in addition to degree of questions.

Anyway, let's acquire dorsum to the point, hither are about of import differences betwixt these 2 annotations.

1. The @Controller is a mutual musical note which is used to grade a course of report equally Spring MVC Controller spell @RestController is a especial controller used inwards RESTFul spider web services in addition to the equivalent of @Controller + @ResponseBody.

2. The @RestController is relatively new, added alone on Spring 4.0 but @Controller is an onetime annotation, exists since Spring started supporting annotation, officially it was added on Spring 2.5 version.

3. The @Controller musical note indicates that the course of report is a "Controller" e.g. a spider web controller spell @RestController musical note indicates that the course of report is a controller where @RequestMapping methods assume @ResponseBody semantics past times default i.e. servicing REST API.


4. The @Controller is a specialization of @Component musical note spell @RestController is a specialization of @Controller annotation. It is genuinely a convenience controller annotated alongside @Controller in addition to @ResponseBody equally shown below.

@Target(value=TYPE)
@Retention(value=RUNTIME)
@Documented
@Controller
@ResponseBody
public @interface RestController

in addition to hither is how the proclamation of @Controller looks like:

@Target(value=TYPE)
@Retention(value=RUNTIME)
@Documented
@Component
public @interface Controller


5. One of the key departure betwixt @Controler in addition to @RestCotroller inwards Spring MVC is that 1 time yous grade a course of report @RestController in addition to thence every method is written a domain object instead of a view. You tin shipping away run into Bryan Hassen's RESTful response yous demand to annotate each method alongside the @ResponseBody annotation, which is non required when yous occupation @RestController. It non alone makes your code to a greater extent than readable but too saves a couplet of key strokes for you.


Here is a uncomplicated HelloWorld event using @RestController in addition to SpringBoot framework:

That's all nearly the difference betwixt @Controller in addition to @RestController musical note inwards Spring MVC in addition to REST. @RestController is zip but the shortcut to occupation both @Controller in addition to @ResponseBody musical note together.

Spring purposefully added this musical note inwards Spring iv to brand the evolution of RESTful spider web services easier using Spring framework. It tin shipping away straight convert the response to JSON or XML depending upon MIME type of request.

So, if yous are creating a RESTful Web Services it's ameliorate to occupation @RestController than combining @Controller to @ResponseBody.

If yous desire to larn to a greater extent than nearly developing RESTful Web Services using Spring in addition to Spring Security framework, I propose yous bring together Eugen Paraschiv's REST alongside Spring Coaching class. Eugen has about proficient existent globe sense inwards developing in addition to securing RESTful spider web services inwards Java in addition to this course of report is a proficient chance to practice goodness from his immense experience.


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• 23 Spring MVC Interview questions for 2 to three years experienced (list)
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• Does Spring certification assistance inwards Job in addition to Career? (article)
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• 5 Spring in addition to Hibernate online courses for Java developers (list)
• Spring inwards Action past times Craig Walls fourth Edition (see)

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