Spring Kotlin deepdive

This project is designed to show step by step how to migrate from Java to Kotlin with Spring Boot step by step:

• Step 0: Initial Java project
• Step 1: Java to Kotlin
• Step 2: Spring Boot 2
• Step 3: Spring WebFlux
• Step 4: Kotlin routing DSL

See Spring Kotlin support documentation for more details.

Step 0: The initial Java project

• Simple blog with JSON HTTP API
• Integration tests can be run via ./gradlew test (or in the IDE)
• Run the project via ./gradlew bootRun (or in the IDE) and go to http://localhost:8080/ with your browser
• Present the Java application software design
• Reminders:
  • No need for annotating constructor when single constructor for autowiring it (as of Spring 4.3), show 2 syntaxes
  • @RequestMapping aliases: @GetMapping, @PostMapping, etc.
• Reload via CTRL + F9 in IDEA (CMD + SHIFT + F9 on Mac)

Go to step 1: Java to Kotlin