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Modular applications with Spring Boot

= Spring Modulith image:https://img.shields.io/badge/Revved%20up%20by-Develocity-06A0CE?logo=Gradle&labelColor=02303A["Revved up by Develocity", link="https://ge.spring.io/scans?search.rootProjectNames=Spring Modulith"]

:docs: https://docs.spring.io/spring-modulith/docs/current-SNAPSHOT/reference/html/

Spring Modulith allows developers to build well-structured Spring Boot applications and guides developers in finding and working with link:{docs}#fundamentals.modules.application-modules[application modules] driven by the domain. It supports the link:{docs}#verification[verification] of such modular arrangements, link:{docs}#testing[integration testing] individual modules, link:{docs}#observability[observing] the application's behavior on the module level and creating link:{docs}#documentation[documentation snippets] based on the arrangement created.

== Quickstart

. Create a Spring Boot application on https://start.spring.io . Add Spring Modulith to your application by adding this to your pom.xml: + [source, xml]

spring-snapshots https://repo.spring.io/snapshot org.springframework.modulith spring-modulith-bom 1.0.0-SNAPSHOT import pom org.springframework.modulith spring-modulith-starter-test test ---- . Create a Java package arrangement that puts business modules as link:{docs}#fundamentals[direct sub-packages of the application's main package]. + [source, text, subs="macros"] ---- □ Example └─ □ src/main/java ├─ □ example | └─ Application.java ├─ □ example.inventory | └─ … └─ □ example.order └─ … ---- The application root package Application module packages . Create link:{docs}#fundamentals.modules.application-modules[an `ApplicationModules` model], run link:{docs}#verification[verifications] and link:{docs}#documentation[create documentation snippets]. + [source, java] ---- class ApplicationTests {

@Test void writeDocumentationSnippets() {

var modules = ApplicationModules.of(Application.class).verify(); <1>

new Documenter(modules) <2>
  .writeModulesAsPlantUml()
  .writeIndividualModulesAsPlantUml();

} }

<1> Creates application module model and link:{docs}#verification[verifies its structure]. <2> Renders link:{docs}#documentation[Asciidoctor snippets] (component diagrams, application module canvas) to target/modulith-docs. . Run link:{docs}#testing[integration tests] for individual application modules. + [source, text, subs="macros"]

□ Example └─ □ src/test/java └─ □ example.order └─ OrderModuleIntegrationTests.java

[source, java]

@ApplicationModuleTests class OrderModuleIntegrationTests {

@Test void someTestMethod() { … } }

== Reference documentation

Find the reference documentation link:{docs}[here].

== Contributing

https://help.github.com/articles/creating-a-pull-request[Pull requests] are welcome. Note, that we expect everyone to follow the https://github.com/spring-projects/.github/blob/main/CODE_OF_CONDUCT.md[code of conduct].

=== What you will need

  • Git
  • Java 17 or higher
  • Docker version 1.6.0 or higher

=== Get the Source Code

Clone the repository

[source,bash]

git clone [email protected]:spring-projects/spring-modulith.git cd spring-modulith

=== Build the code

To compile, test, and build

[source,bash]

./mvnw -B

== License Spring Modulith is Open Source software released under the https://www.apache.org/licenses/LICENSE-2.0.html[Apache 2.0 license].