Sending a HTTP request in Scala

Question

How can to send a HTTP request

https://www.googleapis.com/language/translate/v2?

in scala and parse this JSON formatted response.

Thanks in Advance.,

What have you tried so far? Try to solve the individual problems step by step. What resources have you looked into regarding the HTTP request and what did/didn't work? — reto, Apr 22 '14 at 07:55
I tried Dispatch framework, It didn't help even I tried by adding Thread.Sleep. But didn't worked out. :( — BalaB, Apr 22 '14 at 08:26
I suggest this library for HTTP GET: https://github.com/scalaj/scalaj-http and this: https://github.com/json4s/json4s for JSON operations. — liosedhel, Apr 22 '14 at 08:41

score 3 · Accepted Answer · edited Apr 22 '14 at 14:11

3

Here is an example based on Dispatch and JSON4s

import dispatch._
import Defaults._

import org.json4s._
import org.json4s.jackson.JsonMethods._

val translateAPI = url("https://www.googleapis.com/language/translate/v2/")

val response = Http( translateAPI OK as.String)

val json = parse( response() ) //() is added by Dispatch and forces to await the result forever ==     Await.result(response , forever)

To get the libraries you need to add the following to your buildfile. : Example for sbt

libraryDependencies += "org.json4s" %% "json4s-jackson" % "3.2.8"

libraryDependencies += "net.databinder.dispatch" %% "dispatch-core" % "0.11.0"

The URL you have given in the example lacks parameters and credentials without those you will get an 400- Error. But it should work if you can fix that issue.

edited Apr 22 '14 at 14:11

answered Apr 22 '14 at 11:29

Andreas Neumann

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Yes., I tried I get timeout exception in both., spray-client and Dispath., I checked by hitting the URI from browsers it works fine. Later I realised that my program is running behind proxy. How can I overcome such a situation. – BalaB Apr 23 '14 at 06:04
Have a look at http://stackoverflow.com/questions/14253515/use-dispatch-0-9-5-behind-proxy there the problem is addressed. – Andreas Neumann Apr 23 '14 at 08:07

score 0 · Answer 2 · answered May 09 '14 at 09:38

Here is an alternative example based on Scruffy Client

val client = ScruffyClient()

val resp = client.prepareGet("https://www.googleapis.com/language/translate/v2").execute()

val entityAsString = resp.bodyAsString

val marshalledJson = resp.bodyAs[MyCaseClass]

And you need to import:

libraryDependencies += "com.sksamuel.scruffy" %% "scruffy-client" % "1.2.5"

Sending a HTTP request in Scala

2 Answers2