Indy 10分段上传到OneDrive错误
我正在尝试使用POST将Multipart上传到OneDrive并获取'HTTP / 1.1 400 Bad Request'。 IdLogFile：
Stat Connected.
Sent 10.02.2017 12:50:08: POST /v1.0/drive/root::/children HTTP/1.0`<EOL>`Content-Type: multipart/related; boundary="Boundary"`<EOL>`Content-Length: 254`<EOL>`Authorization: Bearer EwA...%3d`<EOL>`Host: api.onedrive.com`<EOL>`Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8`<EOL>`Accept-Encoding: identity`<EOL>`User-Agent: Mozilla/3.0 (compatible; Indy Library)`<EOL><EOL>`
Sent 10.02.2017 12:50:08: --Boundary`<EOL>`Content-ID: <metadata>`<EOL>`Content-Type: application/json`<EOL>`{"name":"Dest.txt", "file":{}, "@content.sourceUrl":"cid:content"}`<EOL>`--Boundary`<EOL>`Content-ID: <content><EOL>Content-Type: application/octet-stream<SourceContent>--Boundary--
Recv 10.02.2017 12:50:08: H
Recv 10.02.2017 12:50:08: TTP/1.1 400 Bad Request`<EOL>`Via: 1.1 DM5SCH102210409 (wls-colorado)`<EOL>`Content-Length: 60`<EOL>`Content-Type: application/json`<EOL>`Server: Microsoft-IIS/8.5`<EOL>`P3P: CP="BUS CUR CONo FIN IVDo ONL OUR PHY SAMo TELo"`<EOL>`X-WLSPROXY: DM5SCH102210409`<EOL>`X-MSNSERVER: DM5SCH102231823`<EOL>`Strict-Transport-Security: max-age=31536000; includeSubDomains`<EOL>`X-QosStats: {"ApiId":0,"ResultType":2,"SourcePropertyId":0,"TargetPropertyId":42}`<EOL>`X-ThrowSite: 1479.b891`<EOL>`X-AsmVersion: UNKNOWN; 16.0.0.0`<EOL>`X-MSEdge-Ref: Ref A: A9918FA26FAF469EB3797E9DAEA3172E Ref B: FRAEDGE0409 Ref C: Fri Feb 10 01:50:09 2017 PST`<EOL>`Date: Fri, 10 Feb 2017 09:50:09 GMT`<EOL>`Connection: close`<EOL><EOL>`{"error":{"code":"invalidRequest","message":"Bad Argument"}}
Stat Disconnected.
代码：
procedure TSaveFilter.UploadTest;
const
URL = 'https://api.onedrive.com/v1.0/drive/root::/children';
Boundary = 'Boundary';
var
IdHTTP: TIdHTTP;
MemoryStream: TMemoryStream;
FileStream: TFileStream;
procedure WriteLnString(str: AnsiString; CRLF: Boolean = True);
begin
if CRLF then str := str + #13#10;
MemoryStream.Write(str[1], Length(str));
end;
begin
IdHTTP := TIdHTTP.Create(nil);
try
IdHTTP.HandleRedirects := True;
IdHTTP.IOHandler := TIdSSLIOHandlerSocketOpenSSL.Create(IdHTTP);
IdHTTP.Request.BasicAuthentication := False;
IdHTTP.Request.CustomHeaders.Values['Authorization'] := 'Bearer ' + FAccessToken;
IdHTTP.Request.ContentType := Format('multipart/related; boundary="%s"', [Boundary]);
MemoryStream := TMemoryStream.Create;
try
WriteLnString('--' + Boundary);
WriteLnString('Content-ID: <metadata>');
WriteLnString('Content-Type: application/json');
WriteLnString('{"name":"Dest.txt", "file":{}, "@content.sourceUrl":"cid:content"}');
WriteLnString('--' + Boundary);
WriteLnString('Content-ID: <content>');
WriteLnString('Content-Type: application/octet-stream', False);
FileStream := TFileStream.Create('Source.txt', fmOpenRead);
try
MemoryStream.CopyFrom(FileStream, FileStream.Size);
finally
FileStream.Free;
end;
WriteLnString('--' + Boundary + '--', False);
IdHTTP.Post(URL, MemoryStream);
finally
MemoryStream.Free;
end;
finally
IdHTTP.Free;
end;
end;
我究竟做错了什么？
这是一个工作请求（List children）：
Stat Connected.
Sent 10.02.2017 20:52:42: GET /v1.0/drive/root::/children?select=name,folder,file HTTP/1.1`<EOL>`Authorization: Bearer EwA...%3d`<EOL>`Host: api.onedrive.com`<EOL>`Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8`<EOL>`Accept-Encoding: identity`<EOL>`User-Agent: Mozilla/3.0 (compatible; Indy Library)`<EOL>``<EOL>`
Recv 10.02.2017 20:52:43: H
Recv 10.02.2017 20:52:43: TTP/1.1 200 OK`<EOL>`Via: 1.1 BN2BAP4ED8CB55D (wls-colorado)`<EOL>`Content-Length: 213`<EOL>`Content-Type: application/json; odata.metadata=minimal`<EOL>`Server: Microsoft-IIS/8.5`<EOL>`P3P: CP="BUS CUR CONo FIN IVDo ONL OUR PHY SAMo TELo"`<EOL>`X-WLSPROXY: BN2BAP4ED8CB55D``X-MSNSERVER: DM5SCH102231619`<EOL>`Strict-Transport-Security: max-age=31536000; includeSubDomains`<EOL>`OData-Version: 4.0`<EOL>`X-AsmVersion: UNKNOWN; 16.0.0.0`<EOL>`X-MSEdge-Ref: Ref A: ECB06A4BE05B478AB36611C892C36CC7 Ref B: AM1EDGE0419 Ref C: Fri Feb 10 09:52:43 2017 PST``Date: Fri, 10 Feb 2017 17:52:43 GMT`<EOL>``<EOL>`{"@odata.context":"https://api.onedrive.com/v1.0/$metadata#drives('me')/items('root')/children(name,folder,file)","value":[{"name":"AB","folder":{"childCount":7}},{"name":"ArecaBackup","folder":{"childCount":6}}]}
Stat Disconnected.
您的MIME数据格式不正确，这就是服务器拒绝它的原因。
这是您要发送的请求：
POST /v1.0/drive/root::/children HTTP/1.0
Content-Type: multipart/related; boundary="Boundary"
Content-Length: 254
Authorization: Bearer EwA...%3d
Host: api.onedrive.com
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: identity
User-Agent: Mozilla/3.0 (compatible; Indy Library)
--Boundary
Content-ID: <metadata>
Content-Type: application/json
{"name":"Dest.txt", "file":{}, "@content.sourceUrl":"cid:content"}
--Boundary
Content-ID: <content>
Content-Type: application/octet-stream<SourceContent>--Boundary--
正如你所看到的，MIME数据全部搞砸了。 具体而言，每个MIME字段缺少一些必需的CRLF 。 就像使用HTTP标题和正文一样，MIME标题和正文由<CRLF><CRLF>序列分隔，并且需要在TFileStream数据和它TFileStream的MIME边界之间存在CRLF 。
该请求需要看起来更像这样：
POST /v1.0/drive/root::/children HTTP/1.0
Content-Type: multipart/related; boundary="Boundary"
Content-Length: 260
Authorization: Bearer EwA...%3d
Host: api.onedrive.com
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: identity
User-Agent: Mozilla/3.0 (compatible; Indy Library)
--Boundary
Content-ID: <metadata>
Content-Type: application/json
{"name":"Dest.txt", "file":{}, "@content.sourceUrl":"cid:content"}
--Boundary
Content-ID: <content>
Content-Type: application/octet-stream
<SourceContent>
--Boundary--
试试这个代码来填充TMemoryStream ：
MemoryStream := TMemoryStream.Create;
try
WriteLnString('--' + Boundary);
WriteLnString('Content-ID: <metadata>');
WriteLnString('Content-Type: application/json');
WriteLnString(''); // <-- ADD THIS!!!
WriteLnString('{"name":"Dest.txt", "file":{}, "@content.sourceUrl":"cid:content"}');
WriteLnString('--' + Boundary);
WriteLnString('Content-ID: <content>');
WriteLnString('Content-Type: application/octet-stream'); // <-- REMOVE THE FALSE!!!
WriteLnString(''); // <-- ADD THIS!!!
FileStream := TFileStream.Create('Source.txt', fmOpenRead);
try
MemoryStream.CopyFrom(FileStream, 0);
finally
FileStream.Free;
end;
WriteLnString(''); // <!-- ADD THIS!!!
WriteLnString('--' + Boundary + '--', False);
...
finally
MemoryStream.Free;
end;
也就是说，Indy有一个TIdMultipartFormDataStream类，它在发送multipart/form-data帖子时通常与TIdHTTP使用。 OneDrive不支持multipart/form-data ，但奇怪的是，OneDrive的文档明确指出了以下内容，它仅适用于multipart/form-data而不适用于multipart/related ：
如果包含两个以上的部分，请求将被拒绝。 每个部分都必须在Content-Disposition头部中指定一个name值，指明它是哪个部分 。 部件可以按任何顺序排列，但应首先指定元数据部分。
但是，同样的文档中给出的示例使用multipart/related ，就像您的代码一样。 在Microsoft / OneDrive论坛和各种博客中讨论了在上传到OneDrive时是否使用multipart/form-data或multipart/related 。 OneDrive员工确实证实了这个问题，他们最终需要一些工作。
为了防止OneDrive支持multipart/form-data ，下面是一个使用TIdMultipartFormDataStream的示例：
procedure TSaveFilter.UploadTest;
const
URL = 'https://api.onedrive.com/v1.0/drive/root::/children';
var
IdHTTP: TIdHTTP;
PostData: TIdMultipartFormDataStream;
begin
IdHTTP := TIdHTTP.Create(nil);
try
IdHTTP.HandleRedirects := True;
IdHTTP.IOHandler := TIdSSLIOHandlerSocketOpenSSL.Create(IdHTTP);
IdHTTP.Request.BasicAuthentication := False;
IdHTTP.Request.CustomHeaders.Values['Authorization'] := 'Bearer ' + FAccessToken;
PostData := TIdMultipartFormDataStream.Create;
try
PostData.AddFormField('metadata', '{"name":"Dest.txt", "file":{}}', 'utf-8', 'application/json');
PostData.AddFile('content', 'Source.txt', 'application/octet-stream').FileName := '';
IdHTTP.Post(URL, PostData);
finally
PostData.Free;
end;
finally
IdHTTP.Free;
end;
end;