KMongo で Ktor を使用しています。localhost でサーバーを起動し、単純な「get」リクエストを行うと問題が発生します。サーバー上のデータベースの構成に関して、https://litote.org/kmongo/の参照はあまり明確で完全ではありません。問題を解決する方法を知っている人はいますか？単純な設定の問題だと思いますが、解決方法がわかりません。私は春を使用していません。
これは KmongoDB への接続のコードです:
package com.progettoetere.Routes
import io.ktor.application.
import io.ktor.response.respondText
import io.ktor.routing.*
import kotlinx.coroutines.runBlocking
import org.litote.kmongo.eq
import org.litote.kmongo.reactivestreams.*
import org.litote.kmongo.coroutine.*
fun Route.survey(){
//ramo per i survey
route("/survey"){
//ritorno tutti i questionari
get("/"){
val client = KMongo.createClient().coroutine //client whit Kotli coroutines
val database = client.getDatabase("test") //get a test database
val colSurvey = database.getCollection<Survey>() //get the collection of surveys
//start coroutine
runBlocking {
//get one survey for DEBUG with id == 1023
val dato: Survey? = colSurvey.findOne(Survey::id_survey eq 1023)
//check the survey
if (dato != null) {
call.respondText { "The survey is present" }
} else {
call.respondText { "The survey is not present" }
}
}
}
クライアント インスタンスを作成すると、エラーが発生します。
val client = KMongo.createClient().coroutine
これはスタックエラーです:
2019-03-11 20:58:22.334 [main] INFO Application - Responding at http://0.0.0.0:8080
2019-03-11 20:58:27.633 [nettyCallPool-4-1] INFO org.mongodb.driver.cluster - Cluster created with settings {hosts=[localhost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
2019-03-11 20:58:27.655 [nettyCallPool-4-1] DEBUG org.mongodb.driver.cluster - Updating cluster description to {type=UNKNOWN, servers=[{address=localhost:27017, type=UNKNOWN, state=CONNECTING}]
2019-03-11 20:58:27.666 [cluster-ClusterId{value='5c86bde3cad88d4f128ae82c', description='null'}-localhost:27017] DEBUG org.mongodb.driver.connection - Closing connection connectionId{localValue:1}
2019-03-11 20:58:27.668 [cluster-ClusterId{value='5c86bde3cad88d4f128ae82c', description='null'}-localhost:27017] INFO org.mongodb.driver.cluster - Exception in monitor thread while connecting to server localhost:27017
com.mongodb.MongoSocketOpenException: Exception opening socket
at com.mongodb.internal.connection.AsynchronousSocketChannelStream$OpenCompletionHandler.failed(AsynchronousSocketChannelStream.java:117)
at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:128)
at sun.nio.ch.Invoker$2.run(Invoker.java:218)
at sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.ConnectException: Connessione rifiutata
at sun.nio.ch.UnixAsynchronousSocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.UnixAsynchronousSocketChannelImpl.finishConnect(UnixAsynchronousSocketChannelImpl.java:252)
at sun.nio.ch.UnixAsynchronousSocketChannelImpl.finish(UnixAsynchronousSocketChannelImpl.java:198)
at sun.nio.ch.UnixAsynchronousSocketChannelImpl.onEvent(UnixAsynchronousSocketChannelImpl.java:213)
at sun.nio.ch.EPollPort$EventHandlerTask.run(EPollPort.java:293)