In this tutorial we will have some basic theoretical knowledge about Spring Boot.
- Spring Boot is not a framework, it is a way to create stand-alone applications with minimal or zero configurations.
- With Spring Boot we can develop spring based applications with very less configuration. It provides defaults for code and annotation configuration to quickly start new spring projects within no time.
- It is a Spring module that provides the RAD (Rapid Application Development) feature to the Spring Framework. It comes with the auto-dependency resolution, embedded HTTP servers, auto-configuration, management endpoints and Spring Boot CLI.
- SpringBoot uses convention over configuration software design paradigm, that's why in SpringBoot we don't have XML configuration (deployment descriptor) or beans defined with @Configuration. It had embedded HTTP servers. In short we can say Spring Boot is the combination of Spring Framework and Embedded Servers.
We can say,
Spring Boot = Spring Framework + Embedded HTTP servers (jetty/tomcat) - XML Configuration/ @Configuration
What is the difference between Spring and Spring Boot?
- Spring is a web application framework based on Java, and Spring Boot is a module of Spring.
- Spring provides tools and libraries to create customized web applications, where as Spring Boot is used to create a Spring application (standalone) project which can just run/ execute
- Spring is more complex than Spring Boot.
- It takes time to have spring application up and running. Whereas Spring Boot provides the shortest way to run a spring based application.
Why should we use Spring Boot Framework? What are the advantages and disadvantages of using Spring Boot?
Advantages:
- It reduces the cost, development and testing time of the application, which inturn increases productivity.
- It creates stand-alone Spring applications that can be started using Java -jar.
- Use of JavaConfig helps avoid usage of XML.
- Avoid lots of maven imports and the various version conflicts.
- It avoids writing lots of boilerplate code, Annotations and XML configuration.
- Provide an opinionated development approach.
- Quick start to development by providing defaults.
- It provides Embedded HTTP servers like Tomcat, Jetty etc. to develop and test our web applications very easily.
- Requires less configuration-Since there is no web.xml file. Simply add classes annotated with@Configuration and then you can add methods annotated with@Bean, and Spring will automatically load up the object and manage it like it always has. You can even add @Autowired to the bean method to have Spring autowire in dependencies needed for the bean.
- Environment Based Configuration-Using these properties, you can pass into the application which environment you are using with:-Dspring.profiles.active={enviornment}. Spring will then load up the subsequent application properties file at (application-{environment}.properties) after loading up the main application properties file.
- It simplifies integration with other Java frameworks like JPA/Hibernate ORM, Struts, etc.
- It provides production-ready features such as metrics, health checks, and externalized configuration.
Disadvantage:
- It is a bit difficult and time consuming process to convert existing or legacy Spring Framework projects into Spring Boot Applications.
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-K Himaanshu Shuklaa..
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