kotlinx.serialization.SerializationException:未找到 class 'MultiPartFormDataContent' 的序列化程序
kotlinx.serialization.SerializationException: Serializer for class 'MultiPartFormDataContent' is not found
我正在尝试上传多个文件。
val ktorVersion = "1.5.0"
val serializationVersion = "1.0.1"
我就是这样做的:
override suspend fun uploadFiles(
binaryFiles: Map<String,ByteArray>
): BaseResponse<List<String>> {
return client.submitForm {
url(fileUploadUrl)
method = HttpMethod.Post
body = MultiPartFormDataContent(
formData {
headers{
append("Content-Type", "application/json")
append("Authorization", "Bearer $token}")
}
binaryFiles.entries.forEach {
append(
key = "files",
value = it.value,
headers = Headers.build {
append(HttpHeaders.ContentDisposition, "filename=${it.key}")
}
)
}
}
)
}
}
但是它抛出异常
kotlinx.serialization.SerializationException: Serializer for class 'MultiPartFormDataContent' is not found.
Mark the class as @Serializable or provide the serializer explicitly.
at kotlinx.serialization.internal.Platform_commonKt.serializerNotRegistered(Platform.common.kt:91)
at kotlinx.serialization.SerializersKt__SerializersKt.serializer(Serializers.kt:130)
at kotlinx.serialization.SerializersKt.serializer(Unknown Source)
at io.ktor.client.features.json.serializer.KotlinxSerializerKt.buildSerializer(KotlinxSerializer.kt:82)
at io.ktor.client.features.json.serializer.KotlinxSerializerKt.access$buildSerializer(KotlinxSerializer.kt:1)
at io.ktor.client.features.json.serializer.KotlinxSerializer.writeContent$ktor_client_serialization(KotlinxSe
at io.ktor.client.features.json.serializer.KotlinxSerializer.write(KotlinxSerializer.kt:26)
at io.ktor.client.features.json.JsonFeature$Feature$install.invokeSuspend(JsonFeature.kt:150)
at io.ktor.client.features.json.JsonFeature$Feature$install.invoke(JsonFeature.kt)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:243)
at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:113)
at io.ktor.util.pipeline.SuspendFunctionGun.proceedWith(SuspendFunctionGun.kt:123)
at io.ktor.client.features.HttpCallValidator$Companion$install.invokeSuspend(HttpCallValidator.kt:106)
at io.ktor.client.features.HttpCallValidator$Companion$install.invoke(HttpCallValidator.kt)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:243)
at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:113)
at io.ktor.client.features.HttpRequestLifecycle$Feature$install.invokeSuspend(HttpRequestLifecycle.kt:37)
at io.ktor.client.features.HttpRequestLifecycle$Feature$install.invoke(HttpRequestLifecycle.kt)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:243)
at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:113)
at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:133)
at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:79)
at io.ktor.client.HttpClient.execute(HttpClient.kt:187)
at io.ktor.client.statement.HttpStatement.executeUnsafe(HttpStatement.kt:104)
at com.example.package.core.data.network.services.upload.FileUploadApiImpl.uploadFiles(FileUploadApi.kt:99)
我也试过这种方法,但遇到了同样的问题:
suspend fun uploadFilesTest(
binaryFiles: Map<String,ByteArray>
): BaseResponse<List<String>> {
return client.post(fileUploadUrl) {
headers {
append("Content-Type", ContentType.Application.Json)
append("Authorization", "Bearer $token")
}
body = MultiPartFormDataContent(
formData {
binaryFiles.entries.forEach {
this.appendInput(
key = "files",
size = it.value.size.toLong(),
headers = Headers.build {
append(HttpHeaders.ContentDisposition, "filename=${it.key}")
},
){ buildPacket { writeFully(it.value) }}
}
}
)
}
}
看看你说你有同样问题的最后一个片段,你似乎在 header 中指定 content-type 是这样的
append("Content-Type", ContentType.Application.Json)
但您还希望通过将 body 设置为 MultiPartFormDataContent
来将其设为多部分,这也需要定义为 header content-type:multipart/form-data; ...
所以可能是此冲突导致了问题。
我实际上只是在我的代码中自己尝试过,这似乎是我的问题。
我为 Android 做了这个,但它也可能适用于 ktor。首先,将此行添加到构建项目 gradle:
中的 dependencies
classpath "org.jetbrains.kotlin:kotlin-serialization:1.5.21"
还将这些添加到构建应用程序中 gradle:
plugins {
...
id 'kotlinx-serialization'
}
dependencies {
...
implementation 'org.jetbrains.kotlinx:kotlinx-serialization-json:1.2.2'
}
我正在尝试上传多个文件。
val ktorVersion = "1.5.0"
val serializationVersion = "1.0.1"
我就是这样做的:
override suspend fun uploadFiles(
binaryFiles: Map<String,ByteArray>
): BaseResponse<List<String>> {
return client.submitForm {
url(fileUploadUrl)
method = HttpMethod.Post
body = MultiPartFormDataContent(
formData {
headers{
append("Content-Type", "application/json")
append("Authorization", "Bearer $token}")
}
binaryFiles.entries.forEach {
append(
key = "files",
value = it.value,
headers = Headers.build {
append(HttpHeaders.ContentDisposition, "filename=${it.key}")
}
)
}
}
)
}
}
但是它抛出异常
kotlinx.serialization.SerializationException: Serializer for class 'MultiPartFormDataContent' is not found.
Mark the class as @Serializable or provide the serializer explicitly.
at kotlinx.serialization.internal.Platform_commonKt.serializerNotRegistered(Platform.common.kt:91)
at kotlinx.serialization.SerializersKt__SerializersKt.serializer(Serializers.kt:130)
at kotlinx.serialization.SerializersKt.serializer(Unknown Source)
at io.ktor.client.features.json.serializer.KotlinxSerializerKt.buildSerializer(KotlinxSerializer.kt:82)
at io.ktor.client.features.json.serializer.KotlinxSerializerKt.access$buildSerializer(KotlinxSerializer.kt:1)
at io.ktor.client.features.json.serializer.KotlinxSerializer.writeContent$ktor_client_serialization(KotlinxSe
at io.ktor.client.features.json.serializer.KotlinxSerializer.write(KotlinxSerializer.kt:26)
at io.ktor.client.features.json.JsonFeature$Feature$install.invokeSuspend(JsonFeature.kt:150)
at io.ktor.client.features.json.JsonFeature$Feature$install.invoke(JsonFeature.kt)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:243)
at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:113)
at io.ktor.util.pipeline.SuspendFunctionGun.proceedWith(SuspendFunctionGun.kt:123)
at io.ktor.client.features.HttpCallValidator$Companion$install.invokeSuspend(HttpCallValidator.kt:106)
at io.ktor.client.features.HttpCallValidator$Companion$install.invoke(HttpCallValidator.kt)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:243)
at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:113)
at io.ktor.client.features.HttpRequestLifecycle$Feature$install.invokeSuspend(HttpRequestLifecycle.kt:37)
at io.ktor.client.features.HttpRequestLifecycle$Feature$install.invoke(HttpRequestLifecycle.kt)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:243)
at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:113)
at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:133)
at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:79)
at io.ktor.client.HttpClient.execute(HttpClient.kt:187)
at io.ktor.client.statement.HttpStatement.executeUnsafe(HttpStatement.kt:104)
at com.example.package.core.data.network.services.upload.FileUploadApiImpl.uploadFiles(FileUploadApi.kt:99)
我也试过这种方法,但遇到了同样的问题:
suspend fun uploadFilesTest(
binaryFiles: Map<String,ByteArray>
): BaseResponse<List<String>> {
return client.post(fileUploadUrl) {
headers {
append("Content-Type", ContentType.Application.Json)
append("Authorization", "Bearer $token")
}
body = MultiPartFormDataContent(
formData {
binaryFiles.entries.forEach {
this.appendInput(
key = "files",
size = it.value.size.toLong(),
headers = Headers.build {
append(HttpHeaders.ContentDisposition, "filename=${it.key}")
},
){ buildPacket { writeFully(it.value) }}
}
}
)
}
}
看看你说你有同样问题的最后一个片段,你似乎在 header 中指定 content-type 是这样的
append("Content-Type", ContentType.Application.Json)
但您还希望通过将 body 设置为 MultiPartFormDataContent
来将其设为多部分,这也需要定义为 header content-type:multipart/form-data; ...
所以可能是此冲突导致了问题。
我实际上只是在我的代码中自己尝试过,这似乎是我的问题。
我为 Android 做了这个,但它也可能适用于 ktor。首先,将此行添加到构建项目 gradle:
中的 dependenciesclasspath "org.jetbrains.kotlin:kotlin-serialization:1.5.21"
还将这些添加到构建应用程序中 gradle:
plugins {
...
id 'kotlinx-serialization'
}
dependencies {
...
implementation 'org.jetbrains.kotlinx:kotlinx-serialization-json:1.2.2'
}