Kotlin起步

更新Maven源

vim ~/.gradle/init.gradle

allprojects {
    repositories {
        maven {
            url "http://maven.aliyun.com/nexus/content/groups/public"
        }
    }
}

SpringBoot+Kotlin

curl -s "https://get.sdkman.io" | bash

source "$HOME/.sdkman/bin/sdkman-init.sh"

sdk version
# SDKMAN 5.6.2+294

sdk install springboot 2.0.6.RELEASE

sdk use springboot 2.0.6.RELEASE

spring version
# Spring CLI v2.0.6.RELEASE

关于SDKMAN更多介绍 可以参考SDKMAN

spring init -a demo -b 2.0.6.RELEASE --build gradle -dweb -l kotlin KotlinBasic

cd KotlinBasic

关于更多springboot命令行工具参数 可以参考"spring help init"

./gradlew bootrun

如果发生"Kotlin home does not exist or is not a directory"错误 可以参考Error while compiling the kotlin program in IDEA

Controller

vim src/main/kotlin/com/example/demo/DemoController.kt

package com.example.demo

import org.springframework.web.bind.annotation.GetMapping
import org.springframework.web.bind.annotation.RestController

@RestController
class DemoController {

    @GetMapping("/demo")
    fun demo(): String {
        return "demo"
    }

}

./gradlew bootrun

curl localhost:8080/demo # demo

参考

• gradle 国内加速，修改镜像源

• Error while compiling the kotlin program in IDEA

• Spring Boot and Kotlin