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How do I perform the following in Scala?
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The Akka HTTP modules implement a full server- and client-side HTTP stack on top of akka-actor and akka-stream . A typical application does not sit on top of Akka HTTP. Instead, Akka HTTP makes it easier to build integration layers based on HTTP, and therefore stays on the sidelines.
Akka HTTP model contains a deeply structured, fully immutable, case-class based model of all the major HTTP data structures, like HTTP requests, responses and common headers. It lives in the akka-http-core module and forms the basis for most of Akka HTTP's APIs.
Simplified Http. This is a fully featured http client for Scala which wraps java.net.HttpURLConnection. Features: Zero dependencies. Cross compiled for Scala 2.10, 2.11, 2.12, and 2.13-M3.
An HTTP request is made by a client, to a named host, which is located on a server. The aim of the request is to access a resource on the server. To make the request, the client uses components of a URL (Uniform Resource Locator), which includes the information needed to access the resource.
You could try out Dispatch. A little difficult to grasp at first, but after a while I've started to like it. It works on top of HttpClient.
import dispatch.Http
import Http._
// Get
Http(url("http://youruri.com/yo") >>> System.out)
// Get with header
Http(url("http://youruri.com/yo") <:< Map("Accept" -> "application/json") >>> System.out)
// Post
Http(url("http://youruri.com/yo") << yourPostData >|)
You can simply use java.net.URL to send HTTP GET and HTTP POST requests. You can also set HTTP request headers on the HttpURLConnection like this:
val con = url.openConnection.asInstanceOf[HttpURLConnection]
con.setRequestProperty("Header", "Value")
I have written myself a utility class which does exactly this. You can see it here:
https://github.com/gruenewa/gruenewa-misc/blob/master/gruenewa-wsclient/src/main/scala/gruenewa/wsclient/Service.scala
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