Given below are the various View Resolvers available in Spring MVC:
- AbstractCachingViewResolver: This Resolver provides caching when we extend this.
- XmlViewResolver: It accepts a configuration file written in XML with the same DTD as of Spring Bean factories, and the...
- ResourceBundleViewResolver: It uses bean definition in a ResourceBundle, which has a specific bundle...
What is viewresolver in Spring MVC?
All MVC frameworks provide a way of working with views. Spring does that via the view resolvers, which enable you to render models in the browser without tying the implementation to a specific view technology. The ViewResolver maps view names to actual views.
What is view resolver in Spring Boot?
It is done with the help of View Resolver, which does not need any specific view technology like JSP, Velocity, etc. The View Resolver maps the view names to the corresponding view. There are various View Resolvers available in Spring, such as InternalResourceViewResolver, XmlViewResolver, etc.
What happens if a view resolver does not return a view?
If a specific view resolver does not result in a view, Spring examines the context for other view resolvers. If additional view resolvers exist, Spring continues to inspect them. If they do not, it throws an Exception. The contract of a view resolver specifies that a view resolver can return null to indicate the view could not be found.
What is the beannameviewresolver?
This is an implementation of ViewResovler that interprets a view name as a bean name in the current application context. Each such View can be defined as a bean in XML or Java configurations. First, we add the BeanNameViewResolver to the previous configuration:
What is view resolver in Spring boot?
Spring provides view resolvers, which enable you to render models in a browser without tying you to a specific view technology. Out of the box, Spring enables you to use JSPs, Velocity templates and XSLT views, for example.
What are the types of view resolver?
The ViewResolver maps view names to actual views. And the Spring framework comes with quite a few view resolvers e.g. InternalResourceViewResolver, BeanNameViewResolver, and a few others.
What is view resolver pattern in Spring MVC?
Spring MVC is a Web MVC Framework for building web applications. In generic all MVC frameworks provide a way of working with views. Spring does that via the ViewResolvers, which enables you to render models in the browser without tying the implementation to specific view technology.
What is the default view resolver in Spring MVC?
InternalResourceViewResolverThe default is an automatically-registered InternalResourceViewResolver ( UrlBasedViewResolver is an abstract superclass of this).
What are view resolvers?
The ViewResolver provides a mapping between view names and actual views. The View interface addresses the preparation of the request and hands the request over to one of the view technologies.
What is @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.
Can we have multiple view resolvers in Spring MVC?
In case you want to use a Multiple View Resolver in a Spring MVC application then priority order can be set using the order property. The following example shows how to use the ResourceBundleViewResolver and the InternalResourceViewResolver in the Spring Web MVC Framework.
What is the use of internal view resolver?
The InternalResourceViewResolver is used to resolve the provided URI to actual URI. The following example shows how to use the InternalResourceViewResolver using the Spring Web MVC Framework. The InternalResourceViewResolver allows mapping webpages with requests.
What is view resolver in Spring MVC Javatpoint?
The InternalResourceViewResolver is a class which is used to resolve internal view in Spring MVC. Here, you can define the properties like prefix and suffix where prefix contains the location of view page and suffix contains the extension of view page.
What is the use of @controller annotation?
The @Controller annotation indicates that a particular class serves the role of a controller. There is no need to extend any controller base class or reference the Servlet API. You are of course still able to reference Servlet-specific features if you need to.
What is the use of @SpringBootApplication?
Spring Boot @SpringBootApplication annotation is used to mark a configuration class that declares one or more @Bean methods and also triggers auto-configuration and component scanning. It's same as declaring a class with @Configuration, @EnableAutoConfiguration and @ComponentScan annotations.
What is ModelAndView in Spring?
ModelAndView is a holder for both Model and View in the web MVC framework. These two classes are distinct; ModelAndView merely holds both to make it possible for a controller to return both model and view in a single return value. The view is resolved by a ViewResolver object; the model is data stored in a Map .
What is the use of @SpringBootApplication?
Spring Boot @SpringBootApplication annotation is used to mark a configuration class that declares one or more @Bean methods and also triggers auto-configuration and component scanning. It's same as declaring a class with @Configuration, @EnableAutoConfiguration and @ComponentScan annotations.
What is Spring MVC view prefix?
spring. mvc. view. prefix is a relative path of webapp folder, and u can put jsp files into it.
What is annotation @SpringBootApplication comprise of?
@SpringBootApplication annotation includes Auto- Configuration, Component Scan, and Spring Boot Configuration.
What is the use of @controller annotation?
The @Controller annotation indicates that a particular class serves the role of a controller. There is no need to extend any controller base class or reference the Servlet API. You are of course still able to reference Servlet-specific features if you need to.
What is view resolver?
The ViewResolver maps view names to actual views.
Why should the internalresourceviewresolver have a higher order?
Be careful on the order priority as the InternalResourceViewResolver should have a higher order – because it's intended to represent a very explicit mapping. And if other resolvers have a higher order, then the InternalResourceViewResolver might never be invoked.
Can you chain view resolvers?
This allow you to override specific views in some circumstances. We can simply chain view resolvers by adding more than one resolver to the configuration.
Spring Boot Application Initializer
The first step in producing a deployable war file is to provide a SpringBootServletInitializer subclass and override its configure () method. This makes use of Spring Framework’s Servlet 3.0 support and allows you to configure your application when it’s launched by the servlet container.
Spring Controller
Controller classes can have methods mapped to specific URLs in the application. In given application, it has two views i.e. “/” and “/next”.
Demo
After whole code is written and placed inside folders, run the application by executing main () method in SpringBootWebApplication class.
