vertx 异步转同步

async2sync.groovy

import io.vertx.core.Vertx

import java.util.concurrent.CompletableFuture


String sayHello() {

    def future = new CompletableFuture()

    Vertx vertx = Vertx.vertx()
    vertx.setTimer(3000, {
        future.complete("hello world")
    })

    return future.thenApply({
        return it
    }).get()
}

println(sayHello())