scala调用接口模板

以下是一个Scala调用接口的模板：

import java.net.{HttpURLConnection, URL}
import java.io._

object ApiCaller {

  def callApi(apiUrl: String, requestMethod: String, requestHeaders: Map[String, String], requestBody: String): String = {
    val url = new URL(apiUrl)
    val connection = url.openConnection().asInstanceOf[HttpURLConnection]
    connection.setRequestMethod(requestMethod)

    // 设置请求头
    requestHeaders.foreach(h => connection.setRequestProperty(h._1, h._2))

    // 设置请求体
    connection.setDoOutput(true)
    val outputStream = connection.getOutputStream
    val writer = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"))
    writer.write(requestBody)
    writer.flush()
    writer.close()
    outputStream.close()

    // 发送请求
    val responseCode = connection.getResponseCode
    if (responseCode == HttpURLConnection.HTTP_OK) { // 请求成功
      val inputStream = connection.getInputStream
      val reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"))
      val response = Stream.continually(reader.readLine()).takeWhile(_ != null).mkString("\n")
      reader.close()
      inputStream.close()
      response
    } else { // 请求失败
      ""
    }
  }
}

使用方法：

val apiUrl = "http://example.com/api"
val requestMethod = "POST"
val requestHeaders = Map("Content-Type" -> "application/json")
val requestBody = "{\"name\":\"John\", \"age\":30}"

val response = ApiCaller.callApi(apiUrl, requestMethod, requestHeaders, requestBody)