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(Go) Get eBay Application TokenThis example shows how to request an eBay Application token. Note: This example requires Chilkat v11.0.0 or greater.
success := false // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // See the Ebay documentation about Access token types // Also see the Ebay documentation about client credentials grant flow http := Http_Ref.html">chilkat.NewHttp() // If using the sandbox, the target endpoint will be: // POST https://api.sandbox.ebay.com/identity/v1/oauth2/token // If using the production (live) system, the target endpoint will be: // POST https://api.ebay.com/identity/v1/oauth2/token // The eBay client_id and client_secret needs to be sent // in a Basic Authorization request header, which has this format: // Authorization: Basic <B64_encoded_oauth_credentials> // Chilkat takes care of it. You only need to set the Login = client_id, // and password = client_secret, and indicate you want "Basic" HTTP Authorization. http.SetLogin("EBAY_CLIENT_ID") http.SetPassword("EBAY_CLIENT_SECRET") http.SetBasicAuth(true) // Let's do the following POST: // HTTP method: POST // URL (Sandbox): https://api.sandbox.ebay.com/identity/v1/oauth2/token // // HTTP headers: // Content-Type = application/x-www-form-urlencoded // Authorization = Basic <B64-encoded-oauth-credentials> // // Request body (wrapped for readability): // grant_type=client_credentials& // redirect_uri=<RuName-value>& // scope=<SPACE separated list of scopes> // // Create an HttpRequest_Ref.html">HttpRequest object to hold the request params. req := HttpRequest_Ref.html">chilkat.NewHttpRequest() req.SetHttpVerb("POST") req.AddParam("grant_type","client_credentials") // The scope query param indicates the access to be provided by the token. // Multiple scopes can be specified by separating each with a SPACE char. // See the Ebay OAuth scopes documentation req.AddParam("scope","https://api.ebay.com/oauth/api_scope") endPoint := "https://api.sandbox.ebay.com/identity/v1/oauth2/token" req.SetContentType("application/x-www-form-urlencoded") resp := HttpResponse_Ref.html">chilkat.NewHttpResponse() success = http.HttpReq(endPoint,req,resp) if success == false { fmt.Println(http.LastErrorText()) http.DisposeHttp() req.DisposeHttpRequest() resp.DisposeHttpResponse() return } // The response is JSON.. json := JsonObject_Ref.html">chilkat.NewJsonObject() json.Load(resp.BodyStr()) json.SetEmitCompact(false) // If the response status code is not 200, then it failed. fmt.Println("Response status code = ", resp.StatusCode()) if resp.StatusCode() != 200 { fmt.Println(*json.Emit()) fmt.Println("Failed.") http.DisposeHttp() req.DisposeHttpRequest() resp.DisposeHttpResponse() json.DisposeJsonObject() return } // We successfully retrieved an eBay access token. // The actual access token string can be parsed from the JSON like this: accessToken := json.StringOf("access_token") // This application token is only valid for 7200 seconds (2 hours). We'll want to refresh // it before it expires. (There is an online example for that..) // For now, let's save the JSON to a file for our application to use. // But before doing that, let's add to the JSON an expiration timestamp // so we know when to refresh the token. dtExpire := CkDateTime_Ref.html">chilkat.NewCkDateTime() dtExpire.SetFromCurrentSystemTime() dtExpire.AddSeconds(*json.IntOf("expires_in")) json.AppendString("expire_time",*dtExpire.GetAsTimestamp(false)) // Persist the JSON to a file. fac := FileAccess_Ref.html">chilkat.NewFileAccess() success = fac.WriteEntireTextFile("qa_data/tokens/ebay.json",*json.Emit(),"utf-8",false) if success != true { fmt.Println(fac.LastErrorText()) fmt.Println("Failed to save eBay Application token to file.") http.DisposeHttp() req.DisposeHttpRequest() resp.DisposeHttpResponse() json.DisposeJsonObject() dtExpire.DisposeCkDateTime() fac.DisposeFileAccess() return } fmt.Println(*json.Emit()) fmt.Println("Success.") // The output of this example is: // { // "access_token": "v^1.1#i^1#p^1#I^3#r^0# ... Ajp1BQhJDgAA", // "token_type": "Application Access Token", // "expires_in": 7200, // "refresh_token": "N/A", // "expire_time": "2017-04-16T14:44:20Z" // } // // Success. // http.DisposeHttp() req.DisposeHttpRequest() resp.DisposeHttpResponse() json.DisposeJsonObject() dtExpire.DisposeCkDateTime() fac.DisposeFileAccess() |
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