在Kotlin多平台项目中使用Ktor HttpClient将文件放入二进制文件

implementation("io.ktor:ktor-client-core:$ktorVersion")
implementation("io.ktor:ktor-client-json:$ktorVersion")
implementation("io.ktor:ktor-client-serialization:$ktorVersion")
implementation("io.ktor:ktor-client-serialization-jvm:$ktorVersion")

val client = HttpClient {
    install(JsonFeature) {
        serializer = KotlinxSerializer()
    }
}

val file = File("path/to/file") // 替换为你要上传的文件路径
val request = HttpRequestBuilder().apply {
    url("http://example.com/upload") // 替换为你的上传接口地址
    method = HttpMethod.Post
    body = MultiPartFormDataContent(
        formData {
            appendInput(
                key = "file",
                headers = Headers.build {
                    append(HttpHeaders.ContentType, ContentType.Application.OctetStream.toString())
                    append(HttpHeaders.ContentDisposition, "filename=${file.name}")
                },
                size = file.length()
            ) {
                file.inputStream().asInput()
            }
        }
    )
}

val response: HttpResponse = client.send(request)