Add Kotlin Hello World sample for Spring Integration #372
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This commit introduces a Kotlin-based implementation of the Hello World sample, demonstrating Spring Integration's Kotlin DSL capabilities. The sample includes two applications: a basic Hello World flow and a Poller application. The implementation consists of: - HelloService and HelloWorldConfig using Kotlin DSL for message flows - PollerConfig demonstrating time-based polling with Kotlin syntax - Test suite with unit and integration tests - Maven POM with Kotlin plugin configuration - README with setup instructions and code examples
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Nov 20, 2025
...otlin/src/main/kotlin/org/springframework/integration/samples/helloworld/HelloWorldConfig.kt
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...otlin/src/main/kotlin/org/springframework/integration/samples/helloworld/HelloWorldConfig.kt
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...otlin/src/main/kotlin/org/springframework/integration/samples/helloworld/HelloWorldConfig.kt
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...ld-kotlin/src/main/kotlin/org/springframework/integration/samples/helloworld/PollerConfig.kt
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Revise integrationFlow to be idiomatic of the Kotlin DSL
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Nov 20, 2025
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...otlin/src/main/kotlin/org/springframework/integration/samples/helloworld/HelloWorldConfig.kt
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...ld-kotlin/src/main/kotlin/org/springframework/integration/samples/helloworld/PollerConfig.kt
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Update both Maven and Gradle build configurations to properly support Kotlin with Spring Framework. The Kotlin Spring plugin automatically handles making configuration classes open for proxying, eliminating the need for manual 'open' modifiers. Update maven generation scripts to handle kotlin plugin. Add execution compile section so classes are included in the jar. This can be tested via mvn clean package or to run mvn exec:java -Dexec.mainClass="org.springframework.integration.samples.helloworld.PollerApp" Changes include: - Add kotlin-spring and kotlin-allopen plugins to build configurations - Remove unnecessary 'open' modifiers from @configuration classes - Configure Kotlin Maven plugin with Spring compiler plugin - Simplify QueueChannel initialization to use default capacity - Update MessageProcessorMessageSource to use simpler lambda syntax - Adjust logging configuration to reduce noise from Spring framework
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Nov 21, 2025
* Remove un used assertJ in groovy demo * Replace `org.jetbrains.kotlin.jvm` with `kotlin` when determining if kotlin plugin should be rended in pom.xml
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...tlin/src/test/kotlin/org/springframework/integration/samples/helloworld/PollerConfigTests.kt
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This commit introduces a Kotlin-based implementation of the Hello World sample, demonstrating Spring Integration's Kotlin DSL capabilities. The sample includes two applications: a basic Hello World flow and a Poller application.
The implementation consists of: