Table of Contents
What is the difference between value and path in @RequestMapping?
value method is an alias for path method. This is an alias for path(). For example @RequestMapping(“/foo”) is equivalent to @RequestMapping(path=”/foo”). So both methods are similar in that sense.
What is a RequestMapping?
RequestMapping annotation is used to map web requests onto specific handler classes and/or handler methods. @RequestMapping can be applied to the controller class as well as methods.
What is difference between GetMapping and RequestMapping?
@RequestMapping is used at the class level while @GetMapping is used to connect the methods. This is also an important Spring MVC interview question to knowing how and when to use both RequestMapping and GetMapping is crucial for Java developers.
What is @RestController and @RequestMapping?
In case of @RestController the parameter value depicts the component name or bean name, whereas in @RequestMapping the value parameter is used to specify the path. Both are used for different purpose. If you want to specify request URI path on controller class name use @RequestMapping annotation with @RestController .
Why do we use @RequestMapping?
One of the most important annotations in spring is the @RequestMapping Annotation which is used to map HTTP requests to handler methods of MVC and REST controllers. In Spring MVC applications, the DispatcherServlet (Front Controller) is responsible for routing incoming HTTP requests to handler methods of controllers.
What acts same as @RequestMapping?
@PostMapping acts as a shortcut for @RequestMapping(method = RequestMethod.
What is RequestMapping and PostMapping?
Specifically, @PostMapping is a composed annotation that acts as a shortcut for @RequestMapping(method = RequestMethod. POST). So it is only convenience annotation that is more “verbose” and indicates that method annotated with it is used for handling POST HTTP requests.
What is PostMapping and GetMapping?
The GetMapping annotion handles a GET request, while PostMapping handles a POST request.
How do I use RequestMapping in Spring boot?
When configuring Spring MVC, you need to specify the mappings between the requests and handler methods. To configure the mapping of web requests, we use the @RequestMapping annotation. The @RequestMapping annotation can be applied to class-level and/or method-level in a controller.
Why do we use @RestController?
Spring 4.0 introduced the @RestController annotation in order to simplify the creation of RESTful web services. It’s a convenient annotation that combines @Controller and @ResponseBody, which eliminates the need to annotate every request handling method of the controller class with the @ResponseBody annotation.
How do I use RequestMapping in spring boot?
Request Mapping Basics When configuring Spring MVC, you need to specify the mappings between the requests and handler methods. To configure the mapping of web requests, you use the @RequestMapping annotation. The @RequestMapping annotation can be applied to class-level and/or method-level in a controller.
What is use of @PostMapping?
The @PostMapping is specialized version of @RequestMapping annotation that acts as a shortcut for @RequestMapping(method = RequestMethod. POST) . The @PostMapping annotated methods in the @Controller annotated classes handle the HTTP POST requests matched with given URI expression.
What is the use of PostMapping?
@PostMapping is a composed annotation that acts as a shortcut for @RequestMapping(method = RequestMethod. POST) . @PostMapping annotated methods handle the HTTP POST requests matched with given URI expression.
What is difference between controller and RestController?
@Controller is used to mark classes as Spring MVC Controller. @RestController annotation is a special controller used in RESTful Web services, and it’s the combination of @Controller and @ResponseBody annotation. It is a specialized version of @Component annotation.
How does a RestController work internally?
Spring RestController annotation is used to create RESTful web services using Spring MVC. Spring RestController takes care of mapping request data to the defined request handler method. Once response body is generated from the handler method, it converts it to JSON or XML response.
Is spring boot is MVC?
Spring Boot is considered a module of the Spring framework for packaging the Spring-based application with sensible defaults. Spring MVC is considered to be the model view controller-based web framework under the Spring framework. For building a Spring-powered framework, default configurations are provided by it.
What is REST API in spring boot?
Spring Boot is a Java framework, built on top of the Spring, used for developing web applications. It allows you to create REST APIs with minimal configurations. A few benefits of using Spring Boot for your REST APIs include: No requirement for complex XML configurations.