Classic ASP Requires Chilkat v11.0.0+
Adyen Create Payment Session

Creates an Adyen payment session.
Chilkat Classic ASP Downloads

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

set http = Server.CreateObject("Chilkat.Http")

'  Use this online tool to generate the code from sample JSON:
'  Generate Code to Create JSON

'  The following JSON is sent in the request body, and is constructed by the code that follows.

'  {
'    "merchantAccount": "YourMerchantAccount",
'    "sdkVersion": "1.9.7",
'    "channel": "Web",
'    "amount": {
'      "currency": "EUR",
'      "value": 17408
'    },
'    "reference": "Your order number",
'    "countryCode": "NL",
'    "shopperLocale": "nl_NL",
'    "origin": "https://www.yourshop.com",
'    "returnUrl": "https://www.yourshop.com/checkout/completed"
'  }
set json = Server.CreateObject("Chilkat.JsonObject")
success = json.UpdateString("merchantAccount","YourMerchantAccount")
success = json.UpdateString("sdkVersion","1.9.7")
success = json.UpdateString("channel","Web")
success = json.UpdateString("amount.currency","EUR")
success = json.UpdateInt("amount.value",17408)
success = json.UpdateString("reference","Your order number")
success = json.UpdateString("countryCode","NL")
success = json.UpdateString("shopperLocale","nl_NL")
success = json.UpdateString("origin","https://www.yourshop.com")
success = json.UpdateString("returnUrl","https://www.yourshop.com/checkout/completed")

http.SetRequestHeader "X-API-Key","YourAPIkey"

set resp = Server.CreateObject("Chilkat.HttpResponse")
success = http.HttpJson("POST","https://checkout-test.adyen.com/v41/paymentSession",json,"application/json",resp)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>"
    Response.End
End If

set sbResponseBody = Server.CreateObject("Chilkat.StringBuilder")
success = resp.GetBodySb(sbResponseBody)

set jResp = Server.CreateObject("Chilkat.JsonObject")
success = jResp.LoadSb(sbResponseBody)
jResp.EmitCompact = 0

respStatusCode = resp.StatusCode
Response.Write "<pre>" & Server.HTMLEncode( "Status Code = " & respStatusCode) & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( "Response Body:") & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( jResp.Emit()) & "</pre>"

If (respStatusCode >= 400) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Response Header:") & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( resp.Header) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Failed.") & "</pre>"
    Response.End
End If

'  Sample JSON response:

'  {
'    "paymentSession": "eyJjaGVja291 ... iMS45LjcifQ=="
'  }

'  Sample code for parsing the JSON response...
'  Use the following online tool to generate parsing code from sample JSON:
'  Generate Parsing Code from JSON

paymentSession = jResp.StringOf("paymentSession")

%>
</body>
</html>