使用HTTP API登录的机器人无法正常发送消息

[Silvigarabis]

我使用HTTPAPI在MiraiMC里登录了一个机器人，登录成功，但是发消息会报错400，同时mcl后台报错，提示某些东西无法解析。

以下是mcl的信息

> status
Running MiraiConsole v2.12.3, built on 2022-09-11 21:02:46.
Frontend Terminal: version 2.12.3, provided by Mamoe Technologies

Permission Service: LuckPerms v2.10.0-dev-6+null

Plugins: net.mamoe.mirai-api-http v2.6.2, Chat Command v0.5.0, LuckPerms v2.10.0-dev-6+null, MCPing v2.1.0, MCL Addon v2.1.1

Object Pending Finalization Count: 0
                 committed |  init  |  used   |   max
    Heap Memory:  105.0MB  | 46.0MB | 58.77MB | 192.0MB
Non-Heap Memory:  55.12MB  | 1.5MB  | 54.75MB |   -1

以下是在miraimc登录的过程，随后是发送消息失败

> about miraimc
[22:58:02 INFO]: MiraiMC version 1.7.1
[22:58:02 INFO]: MiraiBot for Minecraft server
[22:58:02 INFO]: Author: DreamVoid
> mirai login <已隐藏QQ> <已隐藏密钥> HTTPAPI
[22:58:15 INFO]: <已隐藏QQ> HTTP-API登录成功！
> mirai sendgroupmessage <已隐藏QQ> <已隐藏群号> awa
[22:58:23 INFO]: 发送群消息时出现异常，状态码: 400，原因: 无效参数

以下是mcl的报错

2023-01-19 22:58:23 E/Mah Debug: kotlinx.serialization.json.internal.JsonDecodingException: Polymorphic serializer was not found for missing class discriminator ('null')
JSON input: {"id":0,"time":0,"groupId":0,"senderId":0,"targetId":0,"target":0,"faceId":0,"text":"awa ","length":0,"value":0}
kotlinx.serialization.json.internal.JsonDecodingException: Polymorphic serializer was not found for missing class discriminator ('null')
JSON input: {"id":0,"time":0,"groupId":0,"senderId":0,"targetId":0,"target":0,"faceId":0,"text":"awa ","length":0,"value":0}
	at kotlinx.serialization.json.internal.JsonExceptionsKt.JsonDecodingException(JsonExceptions.kt:24)
	at kotlinx.serialization.json.internal.JsonExceptionsKt.JsonDecodingException(JsonExceptions.kt:32)
	at kotlinx.serialization.json.internal.PolymorphicKt.throwSerializerNotFound(Polymorphic.kt:76)
	at kotlinx.serialization.json.internal.PolymorphicKt.decodeSerializableValuePolymorphic(Polymorphic.kt:66)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:36)
	at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableValue(AbstractDecoder.kt:43)
	at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableElement(AbstractDecoder.kt:70)
	at kotlinx.serialization.encoding.CompositeDecoder$DefaultImpls.decodeSerializableElement$default(Decoding.kt:535)
	at kotlinx.serialization.internal.ListLikeSerializer.readElement(CollectionSerializers.kt:80)
	at kotlinx.serialization.internal.AbstractCollectionSerializer.readElement$default(CollectionSerializers.kt:51)
	at kotlinx.serialization.internal.AbstractCollectionSerializer.merge(CollectionSerializers.kt:36)
	at kotlinx.serialization.internal.AbstractCollectionSerializer.deserialize(CollectionSerializers.kt:43)
	at kotlinx.serialization.json.internal.PolymorphicKt.decodeSerializableValuePolymorphic(Polymorphic.kt:59)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:36)
	at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableValue(AbstractDecoder.kt:43)
	at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableElement(AbstractDecoder.kt:70)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.internal.dto.parameter.SendDTO$$serializer.deserialize(message.kt:17)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.internal.dto.parameter.SendDTO$$serializer.deserialize(message.kt:17)
	at kotlinx.serialization.json.internal.PolymorphicKt.decodeSerializableValuePolymorphic(Polymorphic.kt:59)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:36)
	at kotlinx.serialization.json.Json.decodeFromString(Json.kt:100)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.internal.serializer.BuiltinJsonSerializer.decode(BuiltinJson.kt:76)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.http.router.MessageKt$messageRouter$1$invoke$$inlined$httpAuthedPost$2$1.invokeSuspend(dsl.kt:200)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.http.router.MessageKt$messageRouter$1$invoke$$inlined$httpAuthedPost$2$1.invoke(dsl.kt)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.http.router.MessageKt$messageRouter$1$invoke$$inlined$httpAuthedPost$2$1.invoke(dsl.kt)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:136)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:78)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.routing.Routing.executeResult(Routing.kt:155)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.routing.Routing.interceptor(Routing.kt:39)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.routing.Routing$Feature$install$1.invokeSuspend(Routing.kt:107)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.routing.Routing$Feature$install$1.invoke(Routing.kt)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.routing.Routing$Feature$install$1.invoke(Routing.kt)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.http.feature.auth.Authorization$install$1.invokeSuspend(Authorization.kt:41)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.http.feature.auth.Authorization$install$1.invoke(Authorization.kt)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.http.feature.auth.Authorization$install$1.invoke(Authorization.kt)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.http.feature.handler.HttpRouterAccessHandler.intercept(HttpRouterAccessHandler.kt:36)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.http.feature.handler.HttpRouterAccessHandler.access$intercept(HttpRouterAccessHandler.kt:25)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.http.feature.handler.HttpRouterAccessHandler$Feature$install$1.invokeSuspend(HttpRouterAccessHandler.kt:91)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.http.feature.handler.HttpRouterAccessHandler$Feature$install$1.invoke(HttpRouterAccessHandler.kt)
	at mirai-api-http-2.6.2.mirai2.jar//net.mamoe.mirai.api.http.adapter.http.feature.handler.HttpRouterAccessHandler$Feature$install$1.invoke(HttpRouterAccessHandler.kt)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:136)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:78)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$2.invokeSuspend(DefaultEnginePipeline.kt:127)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$2.invoke(DefaultEnginePipeline.kt)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$2.invoke(DefaultEnginePipeline.kt)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:136)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:78)
	at mirai-api-http-2.6.2.mirai2.jar[shared]//io.ktor.server.cio.CIOApplicationEngine$handleRequest$2.invokeSuspend(CIOApplicationEngine.kt:196)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:570)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:749)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:677)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)

是我哪里配置错了吗？

[DreamVoid]

使用最新的mcl和mirai-api-http插件

[Silvigarabis]

已尝试，未能解决……仍然出现类似于之前的报错

[Silvigarabis]

尝试更新 MiraiMC 至 1.8-pre1，问题仍未解决……

[Gu-mou-ren]

现在解决了吗？

[Silvigarabis]

大概几个月前，我尝试解决它的时候，没有发现办法。
但是在那之后没多久（可能不到半个月？），mcl发布了新版本，可以加载更高版本的mirai。我升级后miraimc调用httpapi就不会再出问题了。
不过你也提醒我要该把这个讨论关了。