Question: What Is The Use Of @Configuration In Spring Boot?

What is the difference between spring boot and Microservices?

Microservice needs both technologies to make it easy to developer and maintain application.

Spring Cloud is Configuration server technology and communicate with many services and collect in one Application.

Spring boot is a java based framework to work con auto-configuration in Web Application..

What is difference between REST API and Microservices?

Microservices: The individual services and functions – or building blocks – that form a larger microservices-based application. RESTful APIs: The rules, routines, commands, and protocols – or the glue – that integrates the individual microservices, so they function as a single application.

Why spring boot is good for Microservices?

Spring Boot enables building production-ready applications quickly and provides non-functional features: Embedded servers which are easy to deploy with the containers. It helps in monitoring the multiples components. It helps in configuring the components externally.

Is Spring MVC dead?

Spring never dead.. … Now one of the hotcake in market is Spring Boot . This was introduced few years back, but now it is a revolution in Java based application development. And Spring Security and Spring AOP are playing major role in development.

What is the difference between @configuration and @EnableAutoConfiguration?

The main difference between these annotations is that @ComponentScan scans for Spring components while @EnableAutoConfiguration is used for auto-configuring beans present in the classpath in Spring Boot applications.

What is use of @bean annotation in spring?

Annotating a class with the @Configuration indicates that the class can be used by the Spring IoC container as a source of bean definitions. The @Bean annotation tells Spring that a method annotated with @Bean will return an object that should be registered as a bean in the Spring application context.

Can we use @component instead of @controller?

“@Component serves as a generic stereotype for any Spring-managed component; whereas, @Repository, @Service, and @Controller serve as specializations of @Component for more specific use cases (e.g., in the persistence, service, and presentation layers, respectively).

What is @ComponentScan?

The @ComponentScan annotation is used with the @Configuration annotation to tell Spring the packages to scan for annotated components. @ComponentScan also used to specify base packages and base package classes using thebasePackageClasses or basePackages attributes of @ComponentScan.

What is the difference between @component and @ComponentScan?

Using the annotation @ComponentScan , you can tell Spring where do your Spring-managed components lie. … On the other hand, @Component is a generic annotation for any Spring-Managed component. For example – If you create a class called Testing inside the package com. example.

Why is Spring MVC better than Servlets JSP?

Servlets are based upon a low-level API for handling requests and responses. Web frameworks like Spring MVC are designed to make building web applications, which handle HTTP requests and responses, easier. … You CAN use servlets to write a web application, but you’ll have to handle all of the details manually.

What is use of @autowired in spring?

Advertisements. The @Autowired annotation provides more fine-grained control over where and how autowiring should be accomplished. The @Autowired annotation can be used to autowire bean on the setter method just like @Required annotation, constructor, a property or methods with arbitrary names and/or multiple arguments …

Is Spring MVC still used?

You can use Spring MVC if you want to develop a web application with Spring. However, for the development of general Spring applications or beginning to learn Spring, it is recommended that you use Spring Boot as it is production-ready, mitigates the job, and is being quickly adopted.

What is the difference between @bean and Autowired?

Annotating @Bean only registers the service as a bean(kind of an Object) in spring application context. In simple words, it is just registration and nothing else. @Autowired BookingService bookingService; Annotating a variable with @Autowired injects a BookingService bean(i.e Object) from Spring Application Context.

What is @bean used for?

@Bean is a method-level annotation and a direct analog of the XML element. The annotation supports most of the attributes offered by , such as: init-method , destroy-method , autowiring , lazy-init , dependency-check , depends-on and scope .

What is Springboot used for?

Spring Boot is an open source Java-based framework used to create a micro Service. It is developed by Pivotal Team and is used to build stand-alone and production ready spring applications. This chapter will give you an introduction to Spring Boot and familiarizes you with its basic concepts.

What is the difference between @bean and @component?

@Component auto detects and configures the beans using classpath scanning whereas @Bean explicitly declares a single bean, rather than letting Spring do it automatically.

Why @component is used in spring?

Spring Component annotation is used to denote a class as Component. It means that Spring framework will autodetect these classes for dependency injection when annotation-based configuration and classpath scanning is used.

What is the use of @configuration?

In computing, configuration files (commonly known simply as config files) are files used to configure the parameters and initial settings for some computer programs. They are used for user applications, server processes and operating system settings.

Is spring boot only for Microservices?

Spring Boot is just one way of building applications with the Spring Frameworks and it is not exclusively for microservices. You can use it for the same types of applications as before, yet you have a simpler way of deployment now.

What is use of @configuration in spring?

@Configuration annotation is used for Spring annotation based configuration. The @Configuration is a marker annotation which indicates that a class declares one or more @Bean methods and may be processed by the Spring container to generate bean definitions and service requests for those beans at runtime.

What is the difference between @configuration and @component in Spring?

@Component Indicates that an annotated class is a “component”. Such classes are considered as candidates for auto-detection when using annotation-based configuration and classpath scanning. A @Configuration is also a @Component, but a @Component cannot act like a @Configuration.

Is spring a Java boot?

Spring Boot is an open source Java-based framework used to create a Micro Service. It is developed by Pivotal Team. … Spring Boot contains a comprehensive infrastructure support for developing a micro service and enables you to develop enterprise-ready applications that you can “just run”.

Is spring boot a MVC?

Spring Boot is a module of Spring for packaging the Spring-based application with sensible defaults. Spring MVC is a model view controller-based web framework under the Spring framework. It provides default configurations to build Spring-powered framework.

What’s the difference between @component @controller @repository & @service annotations in spring?

The difference between them is, @component is used to annotate compound classes, @Repository is a marker for automatic exception translation in the persistence layer, for service layer we need to use @service. You can refer Spring Documentation to know more.