vertx-web-kotlin

This library provides Kotlin extension functions for Vert.X Web to make it easier to define routes and work with requests and responses.

Examples

Using Router extension functions to define routes

import com.github.inikolaev.vertx.web.kotlin.*
import io.vertx.core.Vertx
import io.vertx.ext.web.Router

fun main(args: Array<String>) {
    val vertx = Vertx.vertx()
    val router = Router.router(vertx)
    
    router.get("/user/:name") { context ->
        val user = context.request().getParam("name")
        context.response().end("Hello $user!")
    }
    
    router.get { context ->
        context.response().end("Hello World!")
    }
    
    vertx.createHttpServer().requestHandler { router.accept(it) }.listen(8080)
}

Using Vertx.httpServer extension function to create server and define routes

import io.vertx.core.Vertx

fun main(args: Array<String>) {
    val vertx = Vertx.vertx()

    vertx.httpServer(8080) {
        get("/user/:name") { context ->
            val user = context.request().getParam("name")
            context.response().end("Hello $user!")
        }

        get { context ->
            context.response().end("Hello World!")
        }
    }
}

Enabling CORS

import com.github.inikolaev.vertx.web.kotlin.*
import io.vertx.core.Vertx
import io.vertx.ext.web.Router

fun main(args: Array<String>) {
    val vertx = Vertx.vertx()
    
    vertx.httpServer(8080) {
        cors("*")

        get("/user/:name") { context ->
            val user = context.request().getParam("name")
            context.response().end("Hello $user!")
        }
    }
}

Responding with JSON

import com.github.inikolaev.vertx.web.kotlin.*
import io.vertx.core.Vertx
import io.vertx.ext.web.Router
import io.vertx.kotlin.core.json.json
import io.vertx.kotlin.core.json.obj

fun main(args: Array<String>) {
    val vertx = Vertx.vertx()

    vertx.httpServer(8080) {
        get("/user/:name") { context ->
            val user = context.request().getParam("name")
            context.response().endJson(json {
                obj("name" to name)
            })
        }
    }
}