如何在scala中调用poloniex交易api
我的代码如下如何在scala中调用poloniex交易api,scala,akka-http,poloniex,Scala,Akka Http,Poloniex,我的代码如下 import org.apache.commons.codec.binary.Hex import akka.actor.ActorSystem import akka.http.scaladsl.Http import akka.http.scaladsl.model.headers.RawHeader import akka.http.scaladsl.model._ import akka.stream.ActorMaterializer import akka.util.B
import org.apache.commons.codec.binary.Hex
import akka.actor.ActorSystem
import akka.http.scaladsl.Http
import akka.http.scaladsl.model.headers.RawHeader
import akka.http.scaladsl.model._
import akka.stream.ActorMaterializer
import akka.util.ByteString
import javax.crypto.spec.SecretKeySpec
import javax.crypto.Mac
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.Future
class Poloniex {
def post(postData: String): Future[HttpResponse] = {
val command = "returnBalances"
val nonce = (System.currentTimeMillis / 1000).toString
val postData = s"nonce=$nonce&command=$command"
val headers: scala.collection.immutable.Seq[HttpHeader] = scala.collection.immutable.Seq(
RawHeader("Key", API_KEY),
RawHeader("Sign", hmacSha512(postData))
)
val entity = HttpEntity(postData)
for {
r <- Http().singleRequest(HttpRequest(HttpMethods.POST, TRADING_URL, headers, entity))
} yield r
}
private def hmacSha512(postData: String): String = {
val secret = new SecretKeySpec(API_SECRET.getBytes, HMAC_SHA512)
val mac = Mac.getInstance(HMAC_SHA512)
mac.init(secret)
val result: Array[Byte] = mac.doFinal(postData.getBytes)
new String(Hex.encodeHex(result))
}
}
但我找不到为什么我会出错。
你能找到它出错的原因吗
api文档在这里。
谢谢。请求的内容类型必须是
application/x-www-form-urlencoded
。要设置此选项,请使用:
{"error":"Invalid command."}
val entity =
FormData(Map("nonce" -> nonce, "command" -> command)).toEntity(HttpCharsets.`UTF-8`)