The document introduces Kotlin and Ktor. Kotlin is a general-purpose programming language developed by JetBrains that is static typed, supports OOP and FP, and can be used for both browser and server development. Ktor is a web framework for Kotlin developed by JetBrains that allows building asynchronous servers and clients. The document demonstrates how to set up a development environment for Ktor using OpenJDK, IntelliJ IDEA, and the Ktor plugin. It provides an overview of building Ktor applications that handle requests and responses.

1. Ktor
Kotlin
—
(Shengyou Fan)
COSCon'19
2019/11/03

2. —
• Developer Advocate
• Backend Developer
• Open Source Community Organizer

3. Kotlin https://youtu.be/hg8oYJ8Ez8s
• General-purpose
• Static typing
• OOP + FP
• Developed by
JetBrains
• Open Source
(Apache 2.0)
https://kotlinlang.org/
Kotlin
—

4. Kotlin
—
Browser
Kotlin/JS
Server
Kotlin/JVM
iOS
Kotlin/Native
Android
Kotlin/JVM

5. Kotlin
—
Server
Database
Client
Kotlin/JVM

6. Ktor
—
https://ktor.io/
• Web Framework
• Asynchronous
• Servers + Clients
• Developed by
JetBrains
• Open Source
(Apache 2.0)

7. —
OpenJDK 8+ IntelliJ IDEA Ktor Plugin

8. OpenJDK
—
$ curl -s "https://get.sdkman.io" | bash
$ source "$HOME/.sdkman/bin/sdkman-init.sh"
$ sdk install java
$ sdk list java
$ sdk current java
$ sdk use java <version>
$ sdk default java <version>
$ sdk upgrade java
https://sdkman.io/

9. IntelliJ IDEA
—
ToolBox App

10. —
https://plugins.jetbrains.com

11. Ktor Plugin
—
Ktor Plugin
Ktor

12. Application Call
—
Client
Ktor App
HTTP Server
Feature
Feature
Feature

13. —
• Kotlin
• Ktor
•
• Application Call Request & Response
• Routing
• Exposed DB
•
• API

14. —
Talking Kotlin http://talkingkotlin.com/ktor-with-ryan-harter/Ktor https://ktor.io/servers/index.html KotlinConf https://youtu.be/V4PS3IjIzlw

15. —
https://github.com/shengyou/20191103-ktor-introduction

16. ktor.guide
Ktor
—

17. (Shengyou)
shengyou.fan@jetbrains.com
—
Ktor
Kotlin