Delphi DLL
Delphi DLL
OneDrive -- Streaming File Upload
See more OneDrive Examples
Uploads a local file by path to the signed-in user's OneDrive. This uses OneDrive's simple upload API to upload in a single API call. Uploading in this way only supports files up to 4MB in size. The 4MB limitation is a OneDrive limitation, not a Chilkat limitation. (See the other example(s) for uploading larger files.)Chilkat Delphi DLL Downloads
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, HttpRequest, HttpResponse, JsonObject;
...
procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
json: HCkJsonObject;
http: HCkHttp;
req: HCkHttpRequest;
resp: HCkHttpResponse;
begin
success := False;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// This example uses the OAuth client credentials flow.
// See How to Create an Azure App Registration for OAuth 2.0 Client Credentials
// Use your client ID, client secret, and tenant ID in the following lines
json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'client_id','2871da2c-8176-4b7f-869b-2311aa82e743');
CkJsonObject_UpdateString(json,'client_secret','2hu9Q~r5QuryUcEkNbg1btLtnfU1VUXzhSCG6brH');
CkJsonObject_UpdateString(json,'scope','https://graph.microsoft.com/.default');
CkJsonObject_UpdateString(json,'token_endpoint','https://login.microsoftonline.com/114d7ed6-71bf-4dbe-a866-748364121bf2/oauth2/v2.0/token');
http := CkHttp_Create();
CkHttp_putAuthToken(http,CkJsonObject__emit(json));
// To upload in a single HTTP request, send a PUT request such as the following:
// PUT /v1.0/users/{$user-id}/drive/root:/{item-path}:/content
// Content-type: text/plain
// Content-Length: <the actual content length>
//
// The contents of the file goes here.
// Note: This example can upload any type of file.
// Chilkat automatically adds the Content-Length header.
req := CkHttpRequest_Create();
CkHttpRequest_putHttpVerb(req,'PUT');
// Use your actual user-id instead of "4fe732c3-322e-4a6b-b729-2fd1eb5c6104"
CkHttpRequest_putPath(req,'/v1.0/users/4fe732c3-322e-4a6b-b729-2fd1eb5c6104/drive/root:/TestDir/penguins.jpg:/content');
// Indicate the local file to be streamed in the upload.
CkHttpRequest_StreamBodyFromFile(req,'qa_data/jpg/penguins.jpg');
// If you're uploading a file and don't know what the Content-Type should be,
// just use "application/octet-stream". See below for an example..
CkHttpRequest_putContentType(req,'image/jpeg');
resp := CkHttpResponse_Create();
success := CkHttp_HttpSReq(http,'graph.microsoft.com',443,True,req,resp);
if (success = False) then
begin
Memo1.Lines.Add(CkHttp__lastErrorText(http));
Exit;
end;
// If successful, a 201 status code is returned, with the driveItem object in the response body for the newly created file.
CkJsonObject_putEmitCompact(json,False);
CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));
if (CkHttpResponse_getStatusCode(resp) <> 201) then
begin
// Here is an example of an error:
// {
// "error": {
// "code": "nameAlreadyExists",
// "message": "An item with the same name already exists under the parent",
// "innerError": {
// "request-id": "22302ba5-b885-4b67-9e20-8f6801aec372",
// "date": "2017-06-03T14:22:27"
// }
// }
// }
//
// Response status = 409
Memo1.Lines.Add(CkJsonObject__emit(json));
Memo1.Lines.Add('Response status = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
Exit;
end;
// Success. Examine the driveItem JSON object:
Memo1.Lines.Add(CkJsonObject__emit(json));
Memo1.Lines.Add('-- Success --');
// Here is a sample successful response:
// {
// "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/drive/root/$entity",
// "@microsoft.graph.downloadUrl": "https://s5ucmg.dm2301.livefilestore.com/y4p0MT4NGBshn3EMBjrq8NuU3c_3Bt4DBz0BjZiQPNhiCDj3DjXEHrMr71M6wAGRrvT6WJmPIqNo_lxBP4Uen5MXFVtO3Dz_tdZ531hC_J9fb-eU6CoEmvjonwapmTorJb6hbi6g8VNxBQLItDyVgWM-InmxoNRo0N6xpcAuIbKZccN5vuctIs-Wqxefaza19thlu__bOl8kfG_SkgsrbBzKdTjOS0phBhIi8kYo9wG25k",
// "createdBy": {
// "application": {
// "displayName": "Chilkat",
// "id": "441c9990"
// },
// "user": {
// "displayName": "Matt Smith",
// "id": "3a33fceb9b74cc15"
// }
// },
// "createdDateTime": "2017-06-03T14:23:52.153Z",
// "cTag": "aYzozQTMzRkNFQjlCNzRDQzE1ITQ4NjMuMjU3",
// "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODYzLjA",
// "id": "3A33FCEB9B74CC15!4863",
// "lastModifiedBy": {
// "application": {
// "displayName": "Chilkat",
// "id": "441c9990"
// },
// "user": {
// "displayName": "Matt Smith",
// "id": "3a33fceb9b74cc15"
// }
// },
// "lastModifiedDateTime": "2017-06-03T14:23:52.153Z",
// "name": "penguins.jpg",
// "parentReference": {
// "driveId": "3a33fceb9b74cc15",
// "id": "3A33FCEB9B74CC15!4862",
// "name": "someFolder",
// "path": "/drive/root:/someFolder"
// },
// "size": 777835,
// "webUrl": "https://1drv.ms/i/s!ABXMdJvr_DM6pX8",
// "file": {
// "hashes": {
// "sha1Hash": "DF7BE9DC4F467187783ACA68C7CE98E4DF2172D0"
// },
// "mimeType": "image/jpeg",
// "processingMetadata": true
// },
// "fileSystemInfo": {
// "createdDateTime": "2017-06-03T14:23:52.153Z",
// "lastModifiedDateTime": "2017-06-03T14:23:52.153Z"
// }
// }
// ------------------------------------------------------------------------------------
// Now let's upload some file where we don't know what the Content-Type should be.
//
// In this case, we're uploading the same JPG file but instead of providing "image/jpeg" for the
// Content-Type, we provide "application/octet-stream". ("application/octet-stream" is the general
// HTTP content-type used for anything unkown. "octet" is a synonym for "byte". It's just a way of
// saying: Here's a stream of bytes that comprise the file.)
// Also, you'll notice in the successful JSON response (below), that Microsoft automatically
// detected the Content-Type as "image/jpeg", because the mimeType is set as such.
// It is likely Microsoft set the MIME type (i.e. Content-Type) based on the file extension, or even better
// it may have determined the MIME type by examining the initial bytes of the file to find the standard
// identifying markers that signify common file types such as PDF, JPG, ZIP, and many more.
// In a nutshell: Don't worry about setting the ContentType precisely. If you know it, great. If not, just
// use "application/octet-stream".
CkHttpRequest_putHttpVerb(req,'PUT');
// Use your actual user-id instead of "4fe732c3-322e-4a6b-b729-2fd1eb5c6104"
CkHttpRequest_putPath(req,'/v1.0/users/4fe732c3-322e-4a6b-b729-2fd1eb5c6104/drive/root:/TestDir/penguins2.jpg:/content');
CkHttpRequest_StreamBodyFromFile(req,'qa_data/jpg/penguins.jpg');
CkHttpRequest_putContentType(req,'application/octet-stream');
success := CkHttp_HttpSReq(http,'graph.microsoft.com',443,True,req,resp);
if (success = False) then
begin
Memo1.Lines.Add(CkHttp__lastErrorText(http));
Exit;
end;
CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));
if (CkHttpResponse_getStatusCode(resp) <> 201) then
begin
Memo1.Lines.Add(CkJsonObject__emit(json));
Memo1.Lines.Add('Response status = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
Exit;
end;
// Success. Examine the driveItem JSON object:
Memo1.Lines.Add(CkJsonObject__emit(json));
Memo1.Lines.Add('-- Success --');
// {
// "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/drive/root/$entity",
// "@microsoft.graph.downloadUrl": "https://s5ucmg.dm2301.livefilestore.com/y4pKX-VIcxZfOUa1iYzGo7K4dX8an2xkcL7i-bb1YLE2ralUEPAixycWzekSn6-lUl5ojvZLQzpce45pgX2SIZfHe9l9scGcYu1viPHxKQ67Xh5b6iMhQNwbjbPQdr3ez6DET55DL25f7kS-fnksazALBtHiTLYayEqMc3WokdQYPsCj7AtzyNPzgKh6ye9R0FxM6ZRS5y6ARY23dIWuGkAKE9lKLgC4PPjvgNBBvl7zi8",
// "createdBy": {
// "application": {
// "displayName": "Chilkat",
// "id": "441c9990"
// },
// "user": {
// "displayName": "Matt Smith",
// "id": "3a33fceb9b74cc15"
// }
// },
// "createdDateTime": "2017-06-03T14:30:22.017Z",
// "cTag": "aYzozQTMzRkNFQjlCNzRDQzE1ITQ4NjUuMjU3",
// "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODY1LjA",
// "id": "3A33FCEB9B74CC15!4865",
// "lastModifiedBy": {
// "application": {
// "displayName": "Chilkat",
// "id": "441c9990"
// },
// "user": {
// "displayName": "Matt Smith",
// "id": "3a33fceb9b74cc15"
// }
// },
// "lastModifiedDateTime": "2017-06-03T14:30:22.017Z",
// "name": "penguins2.jpg",
// "parentReference": {
// "driveId": "3a33fceb9b74cc15",
// "id": "3A33FCEB9B74CC15!4862",
// "name": "someFolder",
// "path": "/drive/root:/someFolder"
// },
// "size": 777835,
// "webUrl": "https://1drv.ms/i/s!ABXMdJvr_DM6pgE",
// "file": {
// "hashes": {
// "sha1Hash": "DF7BE9DC4F467187783ACA68C7CE98E4DF2172D0"
// },
// "mimeType": "image/jpeg",
// "processingMetadata": true
// },
// "fileSystemInfo": {
// "createdDateTime": "2017-06-03T14:30:22.016Z",
// "lastModifiedDateTime": "2017-06-03T14:30:22.016Z"
// }
// }
CkJsonObject_Dispose(json);
CkHttp_Dispose(http);
CkHttpRequest_Dispose(req);
CkHttpResponse_Dispose(resp);
end;