静态编程语言Vert. x Postgres pub/sub不工作

Question

我试图在Kotlin Vert中实现Postgres发布/订阅。x应用程序，但它似乎不起作用。以下是我尝试过的：

    public override suspend fun start() {
        val subscriber = PgSubscriber.subscriber(
            Vertx.vertx(), PgConnectOptions()
                .setPort(5432)
                .setDatabase("postgres")
                .setHost("localhost")
                .setUser("postgres")
        )

        val connect = subscriber.connect { ar: AsyncResult<Void?> ->
            if (ar.succeeded())
                println(ar.result())
                subscriber.channel("added_workspace_request")
                .handler { payload: String -> println("Received $payload") }
        }
    }
}```

Answer 1

您是否在连接上发送了< code>listen $channel sql语句？