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(Visual FoxPro) QuickBooks - Automatically Refresh Access Token with No User InteractionDemonstrates how to automaticaly refresh an expired access token and retry the request after a 401 authorization error. Note: This example requires Chilkat v11.0.0 or greater.
LOCAL lnSuccess LOCAL loJsonToken LOCAL loRest LOCAL lnBAutoReconnect LOCAL loSbAuth LOCAL lcResponseBody LOCAL loOauth2 LOCAL loSbJson LOCAL loJson LOCAL loDtime LOCAL lnBLocalTime LOCAL loDt lnSuccess = 0 * This example assumes the Chilkat API to have been previously unlocked. * See Global Unlock Sample for sample code. * Get our previously obtained OAuth2 access token, which should contain JSON like this: * { * "expires_in": 3600, * "x_refresh_token_expires_in": 8726400, * "refresh_token": "L011546037639r ... 3vR2DrbOmg0Sdagw", * "access_token": "eyJlbmMiOiJBMTI4Q0 ... oETJEMbeggg", * "token_type": "bearer" * } loJsonToken = CreateObject('Chilkat.JsonObject') lnSuccess = loJsonToken.LoadFile("qa_data/tokens/qb-access-token.json") loRest = CreateObject('Chilkat.Rest') * Connect using TLS. * A single REST object, once connected, can be used for many Quickbooks 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. lnBAutoReconnect = 1 lnSuccess = loRest.Connect("sandbox-quickbooks.api.intuit.com",443,1,lnBAutoReconnect) IF (lnSuccess = 0) THEN ? loRest.LastErrorText RELEASE loJsonToken RELEASE loRest CANCEL ENDIF loSbAuth = CreateObject('Chilkat.StringBuilder') loSbAuth.Append("Bearer ") loSbAuth.Append(loJsonToken.StringOf("access_token")) loRest.Authorization = loSbAuth.GetAsString() loRest.AddHeader("Accept","application/json") loRest.AllowHeaderFolding = 0 * The company ID is 123146096291789 * The employee ID is 58 lcResponseBody = loRest.FullRequestNoBody("GET","/v3/company/123146096291789/employee/58?minorversion=45") IF (loRest.LastMethodSuccess = 0) THEN ? loRest.LastErrorText RELEASE loJsonToken RELEASE loRest RELEASE loSbAuth CANCEL ENDIF * If we get a 401 authorization error, then it's likely because the access token expired. * We can automatically refresh it without interaction from the user. IF (loRest.ResponseStatusCode = 401) THEN loOauth2 = CreateObject('Chilkat.OAuth2') loOauth2.TokenEndpoint = "https://oauth.platform.intuit.com/oauth2/v1/tokens/bearer" * Replace these with actual values. loOauth2.ClientId = "QUICKBOOKS-CLIENT-ID" loOauth2.ClientSecret = "QUICKBOOKS-CLIENT-SECRET" * Get the "refresh_token" loOauth2.RefreshToken = loJsonToken.StringOf("refresh_token") * Send the HTTP POST to refresh the access token.. lnSuccess = loOauth2.RefreshAccessToken() IF (lnSuccess = 0) THEN ? loOauth2.LastErrorText RELEASE loJsonToken RELEASE loRest RELEASE loSbAuth RELEASE loOauth2 CANCEL ENDIF ? "New access token: " + loOauth2.AccessToken * Update the JSON with the new tokens. loJsonToken.UpdateString("access_token",loOauth2.AccessToken) * Save the new JSON access token response to a file. * The access + refresh tokens contained in this JSON will be needed for the next refresh. loSbJson = CreateObject('Chilkat.StringBuilder') loJsonToken.EmitCompact = 0 loJsonToken.EmitSb(loSbJson) loSbJson.WriteFile("qa_data/tokens/qb-access-token.json","utf-8",0) ? "OAuth2 token refreshed!" ? "New Access Token = " + loOauth2.AccessToken loSbAuth.Clear() loSbAuth.Append("Bearer ") loSbAuth.Append(loOauth2.AccessToken) loRest.Authorization = loSbAuth.GetAsString() * Now retry the request with the refreshed access token... lcResponseBody = loRest.FullRequestNoBody("GET","/v3/company/123146096291789/employee/58?minorversion=45") IF (loRest.LastMethodSuccess = 0) THEN ? loRest.LastErrorText RELEASE loJsonToken RELEASE loRest RELEASE loSbAuth RELEASE loOauth2 RELEASE loSbJson CANCEL ENDIF ENDIF * We should expect a 200 response if successful. IF (loRest.ResponseStatusCode <> 200) THEN ? "Request Header: " ? loRest.LastRequestHeader ? "----" ? "Response StatusCode = " + STR(loRest.ResponseStatusCode) ? "Response StatusLine: " + loRest.ResponseStatusText ? "Response Header:" ? loRest.ResponseHeader ? lcResponseBody RELEASE loJsonToken RELEASE loRest RELEASE loSbAuth RELEASE loOauth2 RELEASE loSbJson CANCEL ENDIF * Load the JSON response into a JSON object for parsing. * A sample JSON response is shown below. loJson = CreateObject('Chilkat.JsonObject') loJson.Load(lcResponseBody) * These will be used for parsing date/time strings.. loDtime = CreateObject('Chilkat.CkDateTime') lnBLocalTime = 1 * Show the JSON. loJson.EmitCompact = 0 ? loJson.Emit() * Get some information from the JSON.. ? "Name: " + loJson.StringOf("Employee.DisplayName") ? "Id: " + loJson.StringOf("Employee.Id") ? "City: " + loJson.StringOf("Employee.PrimaryAddr.City") ? "PostalCode: " + loJson.StringOf("Employee.PrimaryAddr.PostalCode") * Load the CreateTime into a CkDateTime... loDtime.SetFromTimestamp(loJson.StringOf("Employee.MetaData.CreateTime")) loDt = CreateObject('Chilkat.DtObj') loDtime.ToDtObj(lnBLocalTime,loDt) ? STR(loDt.Month) + "/" + STR(loDt.Day) + "/" + STR(loDt.Year) + " " + STR(loDt.Hour) + ":" + STR(loDt.Minute) ? "Success." * Use this online tool to generate parsing code from sample JSON: * Generate Parsing Code from JSON * ------------------------------------------------------ * The JSON response looks like this: * { * "Employee": { * "SSN": "XXX-XX-XXXX", * "PrimaryAddr": { * "Id": "116", * "Line1": "45 N. Elm Street", * "City": "Middlefield", * "CountrySubDivisionCode": "CA", * "PostalCode": "93242" * }, * "BillableTime": false, * "domain": "QBO", * "sparse": false, * "Id": "98", * "SyncToken": "0", * "MetaData": { * "CreateTime": "2015-07-24T09:34:35-07:00", * "LastUpdatedTime": "2015-07-24T09:34:35-07:00" * }, * "GivenName": "Bill", * "FamilyName": "Miller", * "DisplayName": "Bill Miller", * "PrintOnCheckName": "Bill Miller", * "Active": true, * "PrimaryPhone": { * "FreeFormNumber": "234-525-1234" * } * }, * "time": "2015-07-24T09:35:54.805-07:00" * RELEASE loJsonToken RELEASE loRest RELEASE loSbAuth RELEASE loOauth2 RELEASE loSbJson RELEASE loJson RELEASE loDtime RELEASE loDt |
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