Ktor WebSockets:kotlinx.serialization.SerializationException:未找到 class 'DefaultClientWebSocketSession' 的序列化程序

Ktor WebSockets: kotlinx.serialization.SerializationException: Serializer for class 'DefaultClientWebSocketSession' is not found

今天我正在制作一个实时应用程序,我想使用 WebSockets 来更新我的状态。

一切正常,直到出现此异常:

kotlinx.serialization.SerializationException: Serializer for class 'DefaultClientWebSocketSession' is not found.
Mark the class as @Serializable or provide the serializer explicitly.

找啊找啊,什么都没找到。

所以我的代码看起来与此类似:

Gradle 进口:

implementation("io.ktor:ktor-client-core:1.6.2")
implementation("io.ktor:ktor-client-cio:1.6.2")
implementation("io.ktor:ktor-client-serialization:1.6.2")
implementation("io.ktor:ktor-client-websockets:1.6.2")

代码:

suspend fun main() {
    val endpoint = Url("http://localhost:8080")
    val client = HttpClient(CIO) {
        install(JsonFeature) {
            serializer = KotlinxSerializer()
        }
        install(WebSockets)
    }
    client.webSocket({
        url {
            takeFrom(endpoint)
            path("beeam")
        }
    }) {
        //Do something
    }
}

我希望有人能帮助我。

问题

问题是 endpoint.protocolURLProtocol.HTTP 而不是 URLProtocol.WS 并且使用 takeFrom 你也转移了这个 属性.

解决方案

suspend fun main() {
    val endpoint = Url("http://localhost:8080")
    val client = HttpClient(CIO) {
        install(JsonFeature) {
            serializer = KotlinxSerializer()
        }
        install(WebSockets)
    }
    client.webSocket({
        url {
            takeFrom(endpoint)
            path("beeam")
            protocol = URLProtocol.WS
        }
    }) {
        //Do something
    }
}