Spring Session Module provides APIs and implementation for managing user session in a web application. Spring Session Spring Session consists of following modules: Spring Session Core: Provides API and core support for session management. Spring Session JDBC: provides session management using relational database. Spring Session Data Redis: provides session management implementation for Redis database. Spring […]
Spring Boot Actuator Endpoints
Spring Boot Actuator Endpoints lets us monitor and interact with our application. Spring Actuator is a Spring Boot sub-module and provides built-in endpoints that we can enable and disable for our application. Spring Boot Actuator Endpoints Spring Boot Actuator Endpoints are exposed over JMX and HTTP, most of the times we use HTTP based Actuator […]
Spring @Bean Annotation
Spring @Bean Annotation is applied on a method to specify that it returns a bean to be managed by Spring context. Spring Bean annotation is usually declared in Configuration classes methods. In this case, bean methods may reference other @Bean methods in the same class by calling them directly. Spring @Bean Example Let’s say we […]
Spring Boot @SpringBootApplication, SpringApplication Class
Spring Boot @SpringBootApplication Annotation 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. Spring Boot SpringApplication Class Spring Boot SpringApplication class is used to bootstrap and launch […]
Spring RestController
Spring RestController annotation is a convenience annotation that is itself annotated with @Controller and @ResponseBody. This annotation is applied to a class to mark it as a request handler. 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 […]
Spring Controller – Spring MVC Controller
Spring Controller annotation is a specialization of @Component annotation. Spring Controller annotation is typically used in combination with annotated handler methods based on the RequestMapping annotation. Spring Controller Spring Controller annotation can be applied on classes only. It’s used to mark a class as a web request handler. It’s mostly used with Spring MVC application. […]
Spring @Repository Annotation
Spring @Repository annotation is used to indicate that the class provides the mechanism for storage, retrieval, search, update and delete operation on objects. Spring @Repository Annotation Spring Repository annotation is a specialization of @Component annotation, so Spring Repository classes are autodetected by spring framework through classpath scanning. Spring Repository is very close to DAO pattern […]
Spring @Value Annotation
Spring @Value annotation is used to assign default values to variables and method arguments. We can read spring environment variables as well as system variables using @Value annotation. Spring @Value annotation also supports SpEL. Let’s look at some of the examples of using @Value annotation. Spring @Value – Default Value We can assign default value […]
Spring @PropertySource
Spring @PropertySource annotation is used to provide properties file to Spring Environment. This annotation is used with @Configuration classes. Spring PropertySource annotation is repeatable, means you can have multiple PropertySource on a Configuration class. This feature is available if you are using Java 8 or higher version. Spring PropertySource Example Let’s quickly go through a […]
Spring @Service Annotation
Spring @Service annotation is a specialization of @Component annotation. Spring Service annotation can be applied only to classes. It is used to mark the class as a service provider. Spring @Service Annotation Spring @Service annotation is used with classes that provide some business functionalities. Spring context will autodetect these classes when annotation-based configuration and classpath […]