Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(Delphi ActiveX) Xero Get Attachment (Download a Xero Attachment)Demonstrates how to get the content of an attachment in Xero. Note: This example requires Chilkat v9.5.0.64 or greater.
uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_v9_5_0_TLB; ... procedure TForm1.Button1Click(Sender: TObject); var rest: TChilkatRest; success: Integer; endPoint: WideString; receiptID: WideString; sbPath: TChilkatStringBuilder; numReplaced: Integer; responseXml: WideString; xml: TChilkatXml; numRecords: Integer; sbSaveFilePath: TChilkatStringBuilder; sbAttachmentPath: TChilkatStringBuilder; attachmentData: TChilkatBinData; i: Integer; attachmentID: WideString; filename: WideString; statusCode: Integer; responseBody: WideString; begin // Note: Requires Chilkat v9.5.0.64 or greater. // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. rest := TChilkatRest.Create(Self); // Before sending REST API calls, the REST object needs to be // initialized for OAuth1. // See Xero 2-Legged OAuth1 Setup for sample code. // Assuming the REST object's OAuth1 authenticator is setup, and the initial // connection was made, we may now send REST HTTP requests.. // -------------------------------------------------------------- // First get a list of attachments for a given document (in this case a Receipt). endPoint := 'Receipts'; receiptID := 'c4f40e59-c390-0001-caff-ce731c707d00'; sbPath := TChilkatStringBuilder.Create(Self); sbPath.Append('/api.xro/2.0/{Endpoint}/{Guid}/Attachments/'); numReplaced := sbPath.Replace('{Endpoint}',endPoint); numReplaced := sbPath.Replace('{Guid}',receiptID); responseXml := rest.FullRequestNoBody('GET',sbPath.GetAsString()); if (rest.LastMethodSuccess <> 1) then begin Memo1.Lines.Add(rest.LastErrorText); Exit; end; // A 200 response is expected for actual success. if (rest.ResponseStatusCode <> 200) then begin Memo1.Lines.Add(responseXml); Exit; end; // Examine the response. Memo1.Lines.Add(responseXml); // A sample response looks like this: // <Response xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> // <Id>b235646f-34ac-4b15-90ce-d63267f7cd33</Id> // <Status>OK</Status> // <ProviderName>ChilkatPrivate</ProviderName> // <DateTimeUTC>2016-11-11T14:32:17.0908971Z</DateTimeUTC> // <Attachments> // <Attachment> // <AttachmentID>0edcddc8-325f-40c7-b950-8c71f14afc7c</AttachmentID> // <FileName>penguins.jpg</FileName> // <Url>http://api.xero.com/api.xro/2.0/Receipts/c4f40e59-c390-0001-caff-ce731c707d00/Attachments/penguins.jpg</Url> // <MimeType>image/jpg</MimeType> // <ContentLength>777835</ContentLength> // </Attachment> // <Attachment> // <AttachmentID>0adffdc8-325f-65c7-b950-4391f14af908</AttachmentID> // <FileName>starfish.jpg</FileName> // <Url>http://api.xero.com/api.xro/2.0/Receipts/c4f40e59-c390-0001-caff-ce731c707d00/Attachments/starfish.jpg</Url> // <MimeType>image/jpg</MimeType> // <ContentLength>24537</ContentLength> // </Attachment> // </Attachments> // </Response> xml := TChilkatXml.Create(Self); xml.LoadXml(responseXml); // Iterate over the attachments and download each. numRecords := xml.NumChildrenAt('Attachments'); Memo1.Lines.Add('Number of Attachments = ' + IntToStr(numRecords)); sbSaveFilePath := TChilkatStringBuilder.Create(Self); sbAttachmentPath := TChilkatStringBuilder.Create(Self); attachmentData := TChilkatBinData.Create(Self); i := 0; while i < numRecords do begin xml.I := i; attachmentID := xml.GetChildContent('Attachments|Attachment[i]|AttachmentID'); filename := xml.GetChildContent('Attachments|Attachment[i]|FileName'); Memo1.Lines.Add('AttachmentID: ' + attachmentID); Memo1.Lines.Add('Filename: ' + filename); Memo1.Lines.Add('----'); // Download this attachment. // First build the path for this particular attachment by appending the FileName to the path used to get the list of attachments. sbAttachmentPath.Clear(); sbAttachmentPath.AppendSb(sbPath.ControlInterface); sbAttachmentPath.Append(filename); // Send the GET request in one call, and then get the response in the next two. success := rest.SendReqNoBody('GET',sbAttachmentPath.GetAsString()); if (success <> 1) then begin Memo1.Lines.Add(rest.LastErrorText); Exit; end; // Get the response header. If it's not a 200 success status code, then the response body does NOT contain // the attachment data. statusCode := rest.ReadResponseHeader(); if (statusCode = -1) then begin // We didn't get any response.. Memo1.Lines.Add(rest.LastErrorText); Exit; end; if (statusCode <> 200) then begin Memo1.Lines.Add('Response Status: ' + IntToStr(statusCode)); responseBody := rest.ReadRespBodyString(); if (rest.LastMethodSuccess <> 1) then begin Memo1.Lines.Add('Failed to read the response body.'); end else begin Memo1.Lines.Add(responseBody); end; Memo1.Lines.Add('Failed.'); Exit; end; // OK, the response header indicates the attachment content is forthcoming... // There are a few ways to get the response body. If it is a very large attachment, it can be streamed directly // to a file. We'll assume it's not, so we'll get the response into a BinData object, and then save it to a file. attachmentData.Clear(); success := rest.ReadRespBd(attachmentData.ControlInterface); if (success <> 1) then begin Memo1.Lines.Add(rest.LastErrorText); Exit; end; // Save the data to the file. sbSaveFilePath.SetString('qa_output/'); sbSaveFilePath.Append(filename); success := attachmentData.WriteFile(sbSaveFilePath.GetAsString()); if (success <> 1) then begin Memo1.Lines.Add('Failed to save to output file.'); end else begin Memo1.Lines.Add('Saved to ' + sbSaveFilePath.GetAsString()); end; i := i + 1; end; end; |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.