Spring Modules

A complete list of all the starter modules can be found here: https://github.com/spring-projects/spring-boot/tree/master/spring-boot-project/spring-boot-starters

Reference docs: https://docs.spring.io/spring-boot/docs/current/reference/html/

spring-boot-devtools

Links:

• https://docs.spring.io/spring-boot/docs/current/reference/html/using-boot-devtools.html

Features:

• Sets up some property defaults
• Automatic restart when files in classpath change
• Livereload
• Global settings using a file in user's $HOME
• Can be used with remote applications

spring-boot-starter-web

https://www.baeldung.com/spring-boot-starters (Section 2)

Features:

• Adds support for HTTP / REST controllers

spring-boot-actuator

Links:

• https://www.baeldung.com/spring-boot-actuators
• https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#production-ready-endpoints
• https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-security.html#boot-features-security-actuator

Features:

• Actuator endpoints have to be enabled and exposed to be able to interact with them.
• Shutdown endpoint has to be explicitly enabled: management.endpoint.shutdown.enabled=true

These endpoints can be secured with spring-boot-starter-security.

http :8080/actuator/health --auth user:password

Note: these credentials are setup by spring-boot-starter-security

git details

info actuator's endpoint will expose information about git repository if a git.properties file is found in the root of the classpath. That file can be generated with the git-commit-id-plugin plugin:

http :8080/actuator/info --auth user:password

In order to show full git details, the following property must be set:

management.info.git.mode=full

spring-boot-starter-security

Links:

• https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-security.html
• https://docs.spring.io/spring-security/site/docs/5.1.2.RELEASE/reference/html/

Features:

• Adds security defaults for a web application
• Supports MVC & WebFlux modules
• Oauth2
• Adds actuator security

spring-boot-starter-test

Links:

• https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-testing.html
• https://www.baeldung.com/rest-assured-tutorial

Features:

• spring-boot-starter-test provides @SpringBootTest to setup web tests
• RestAssured is the library chosen to express web tests (it's important to setup the port the application has picked up)

ProjectLombok

Links:

• https://projectlombok.org/

Features:

• Provides annotations that generate a lot of boiler-plate code:
  • @Log
  • @Data == @ToString, @EqualsAndHashCode, @Getter on all fields, and @Setter on all non-final fields, and @RequiredArgsConstructor