Paypal API Question posted in
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Paypal api – What's the meaning (and method to provide) the -d and -u arguments?

I’m trying to make a WS GET call using the Playframework in Scala to invoke the Paypal REST JSON API. I’m more specifically trying to get the initial Paypal access token:

curl -v https://api.sandbox.paypal.com/v1/oauth2/token 
   -H "Accept: application/json" 
   -H "Accept-Language: en_US" 
   -u "client_id:secret" 
   -d "grant_type=client_credentials"

I build this in Scala by doing:

@Inject(ws: WSClient)

val url = config.get[String]("paypal.url.token") // https://api.sandbox.paypal.com/v1/oauth2/token
val httpHeaders = Array(
    "Accept" -> "application/json",
    "Accept-Language" -> "en_US"
)
val username = config.get[String]("paypal.client_id")
val password = config.get[String]("paypal.secret")
val request: WSRequest = ws.url(url).withHttpHeaders(httpHeaders: _*).
    withRequestTimeout(timeout).
    withAuth(username, password, WSAuthScheme.BASIC)
val futureResponse = request.get()
futureResponse.map { response =>
    println(response.json)
}

I here assumed that -u in the original curl sample meant and corresponded to withAuth but I don’t know what the -d for grant_type=client_credentials corresponds to?

When I run it like it is now I get the following error:
{"error":"invalid_token","error_description":"Authorization header does not have valid access token"}

and some when before the log:
[info] p.s.a.o.a.n.h.i.Unauthorized401Interceptor - Can't handle 401 as auth was already performed

Tags:

2

Answers


  1. 0

    You can read curl manual with man curl.

    So,
    1) -u represents --user <username:passsword>

       -u, --user <user:password>
          Specify the user name and password to use for server authentication. Overrides -n, --netrc and --netrc-optional.

          If you simply specify the user name, curl will prompt for a password.

    This also translates to -H "Authorization: <Basic|Bearer> base64_for_username:password"

    2) -d represents the --data or payload on POST request.

       -d, --data <data>
          (HTTP) Sends the specified data in a POST request to the HTTP server, in the same way that a browser does when a user has
          filled in an HTML form and presses the submit button. This will cause curl to pass the data to the server using the  con-
          tent-type application/x-www-form-urlencoded.  Compare to -F, --form.
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  2. 0

    Try post instead of a get like so

    ws
  .url(url)
  .withAuth(username, password, WSAuthScheme.BASIC)
  .post(Map("grant_type" -> Seq("client_credentials")))
  .map(println)
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