spring mvc interview questions for 5 years experience: 36 Spring MVC Interview Questions and Sample Answers
Introduction
Spring is a popular framework for Java web applications. It has many features to help you build web applications quickly and easily. Spring MVC is an implementation of ModelViewController pattern that uses the model to generate dynamic content and the controller to handle user interactions. In this article, we are going to discuss some common questions asked in real-time interviews related to Spring MVC framework.
What is Spring MVC?
Spring MVC is a web application framework that provides a convenient way to build web applications in Java.
Spring MVC is a model-view-controller (MVC) framework that helps you create enterprise Java web applications quickly, easily, and reliably.
What are the different types of Spring MVC Controllers?
Spring MVC has three types of Controllers:
Action Controller – Handles HTTP requests and returns Action objects. These are used to handle both GET and POST methods.
Model View Controller – This controller takes care of the model, view, and controller layers in an application.
RESTful Web Service Controller – It’s responsible for handling requests that come from a RESTful web service client such as a browser or mobile app
What is the difference between RequestMappingHandlerMapping and RequestMappingHandlerAdapter and when would you use each one?
RequestMappingHandlerMapping is used to map request path to a handler method.
RequestMappingHandlerAdapter is used to map request path to a handler method with specified arguments.
You can use these annotations when you need to override the default behavior of Spring MVC, for example if you want to use different URL mappings for different user roles or create multiple views for each controller action, etc..
How to define a custom HandlerInterceptor?
The first step is to import the org.springframework.web.servlet.HandlerInterceptor class and define a custom HandlerInterceptor:
public class CustomInterceptor extends HandlerInterceptor {
To define a custom HandlerInterceptor, you need to extend from Spring’s base class for interceptors by implementing its doFilter() method and returning an instance of your own implementation of HttpServletRequestWrapper with which you can modify any request or response before sending it on to another layer in your application or framework (e..g , controller).
What is the role of Object to string mapping in Spring MVC application?
To convert object to string
To convert from String to Object
To convert from String to Object with a Map
To convert from Object to String with a Map
Spring has several ways to handle form data and validations. List out various ways used in Spring framework.
Spring has several ways to handle form data and validations. List out various ways used in Spring framework.
@ModelAttribute: This is one of the most common annotations that can be used on a property of a controller class or an argument of a method. It ensures that the value passed to this property or argument is bound to the corresponding field of the model object.
@ModelAttribute(required=false): If you want to make sure that the value passed through this annotation is not null but empty strings are allowed, then use this annotation along with required=false attribute as shown below:
@RequestParam: To bind parameters from request object (e.g., query string) into your method arguments, use @RequestParam annotation like so – @RequestParam(“param1”) private String param1;
@RequestBody: This annotation allows you to parse incoming requests in JSON format into Java objects which can then be easily transformed into database queries by Spring MVC framework itself!
Takeaway:
The takeaway from this article is that you should be prepared for Spring MVC Interview Questions.
It’s important to know that the interviewers will ask you about your experience with Spring, if you have worked on any project related to it and how did it go? Also, they may ask some questions from your past projects where you used Spring framework or any similar frameworks like Hibernate etc., so make sure that you prepare as much as possible before going into an interview room
Conclusion
Spring MVC is a web framework that helps you build enterprise-grade applications. It has an excellent support for handling form data and validations, which can be used in any type of application. The Spring framework also provides several ways to handle form data such as Object to string mapping and form data binding mechanism.
Answer ( 1 )
spring mvc interview questions for 5 years experience: 36 Spring MVC Interview Questions and Sample Answers
Introduction
Spring is a popular framework for Java web applications. It has many features to help you build web applications quickly and easily. Spring MVC is an implementation of ModelViewController pattern that uses the model to generate dynamic content and the controller to handle user interactions. In this article, we are going to discuss some common questions asked in real-time interviews related to Spring MVC framework.
What is Spring MVC?
Spring MVC is a web application framework that provides a convenient way to build web applications in Java.
Spring MVC is a model-view-controller (MVC) framework that helps you create enterprise Java web applications quickly, easily, and reliably.
What are the different types of Spring MVC Controllers?
Spring MVC has three types of Controllers:
What is the difference between RequestMappingHandlerMapping and RequestMappingHandlerAdapter and when would you use each one?
You can use these annotations when you need to override the default behavior of Spring MVC, for example if you want to use different URL mappings for different user roles or create multiple views for each controller action, etc..
How to define a custom HandlerInterceptor?
What is the role of Object to string mapping in Spring MVC application?
Spring has several ways to handle form data and validations. List out various ways used in Spring framework.
Spring has several ways to handle form data and validations. List out various ways used in Spring framework.
@ModelAttribute: This is one of the most common annotations that can be used on a property of a controller class or an argument of a method. It ensures that the value passed to this property or argument is bound to the corresponding field of the model object.
@ModelAttribute(required=false): If you want to make sure that the value passed through this annotation is not null but empty strings are allowed, then use this annotation along with required=false attribute as shown below:
@RequestParam: To bind parameters from request object (e.g., query string) into your method arguments, use @RequestParam annotation like so – @RequestParam(“param1”) private String param1;
@RequestBody: This annotation allows you to parse incoming requests in JSON format into Java objects which can then be easily transformed into database queries by Spring MVC framework itself!
Takeaway:
The takeaway from this article is that you should be prepared for Spring MVC Interview Questions.
It’s important to know that the interviewers will ask you about your experience with Spring, if you have worked on any project related to it and how did it go? Also, they may ask some questions from your past projects where you used Spring framework or any similar frameworks like Hibernate etc., so make sure that you prepare as much as possible before going into an interview room
Conclusion
Spring MVC is a web framework that helps you build enterprise-grade applications. It has an excellent support for handling form data and validations, which can be used in any type of application. The Spring framework also provides several ways to handle form data such as Object to string mapping and form data binding mechanism.