Classic ASP

PayPal -- Get an OAuth 2.0 Access Token

Demonstrates how to send a request to get a PayPal OAuth2 access token. Sends an HTTP request equivalent to the following:

curl 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"

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Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

'  This requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

set rest = Server.CreateObject("Chilkat.Rest")

'  Make the initial connection.
'  A single REST object, once connected, can be used for many PayPal REST API calls.
'  The auto-reconnect indicates that if the already-established HTTPS connection is closed,
'  then it will be automatically re-established as needed.
bAutoReconnect = 1
success = rest.Connect("api.sandbox.paypal.com",443,1,bAutoReconnect)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
End If

'  Duplicate this request:

'  	curl 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"

success = rest.AddHeader("Accept","application/json")
success = rest.AddHeader("Accept-Language","en_US")

'  For additional help on where to find  your client ID and API secret, see PayPal Client_ID and API_Secret
success = rest.SetAuthBasic("PAYPAL_REST_API_CLIENT_ID","PAYPAL_REST_API_SECRET")

success = rest.AddQueryParam("grant_type","client_credentials")

responseStr = rest.FullRequestFormUrlEncoded("POST","/v1/oauth2/token")
If (rest.LastMethodSuccess <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( rest.LastRequestHeader) & "</pre>"

'  A sample response:

'  	{
'  	  "scope": "https://api.paypal.com/v1/payments/.* https://api.paypal.com/v1/vault/credit-card https://api.paypal.com/v1/vault/credit-card/.*",
'  	  "access_token": "EEwJ6tF9x5WCIZDYzyZGaz6Khbw7raYRIBV_WxVvgmsG",
'  	  "token_type": "Bearer",
'  	  "app_id": "APP-6XR95014BA15863X",
'  	  "expires_in": 28800
'  	}

set json = Server.CreateObject("Chilkat.JsonObject")
success = json.Load(responseStr)
json.EmitCompact = 0

'  Check the response status code.  A 200 indicates success..
If (rest.ResponseStatusCode <> 200) Then
    Response.Write "<pre>" & Server.HTMLEncode( json.Emit()) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Failed.") & "</pre>"
    Response.End
End If

'  Given that the access token expires in approx 8 hours,
'  let's record the date/time this token was created.
'  This will allow us to know beforehand if the token
'  is expired (and we can then fetch a new token).
set dateTime = Server.CreateObject("Chilkat.CkDateTime")
bLocalTime = 0
dtNow = dateTime.GetAsUnixTime(bLocalTime)
success = json.AppendInt("tokenCreateTimeUtc",dtNow)

'  Examine the access token and save to a file.
Response.Write "<pre>" & Server.HTMLEncode( "Access Token: " & json.StringOf("access_token")) & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( "Full JSON Response:") & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( json.Emit()) & "</pre>"

set sbResponse = Server.CreateObject("Chilkat.StringBuilder")
success = sbResponse.Append(json.Emit())
bEmitBom = 0
success = sbResponse.WriteFile("qa_data/tokens/paypal.json","utf-8",bEmitBom)

%>
</body>
</html>