I want to upload a file in WindChill (is a PLM from PTC). They give to us an REST API with the services to do this. They split an upload of file in 3 stages.
- Stage 1 - We call a service where we give the number of files to upload. In this case only one.
- Stage 2 - A multipart/formdata where we give the file to upload.
- Stage 3 - The last stage where we give the file name, the file size etc...
I think my problem is on stage 2. All the stages run successfully but when i try to open the uploaded file, in this case a pdf, the file is blank, but with the same number of pages of the original one. I compare the content of the uploaded file with the original one and the content inside is the same with a big difference. The original is with an ANSI encoding while the uploaded one is with the UTF-8 encoding. So, I think my problem is on the stage 2.
I'm with some doubts on this stage. In C# I get the bytes[] of file, but in the end I need to pass this bytes to a string to send in a multipart form. What is the encoding that i should use to get string? I tested with default, UTF-8, UNICODE, ASCII encoding but nothing. Here is the example of the Post request body. In a C# I use the HTTPWebRequest to make a request.
------boundary
Content-Disposition: form-data; name="Master_URL"
https://MyUrl/Windchill/servlet/WindchillGW
------boundary
Content-Disposition: form-data; name="CacheDescriptor_array"
844032:844032:844032;
------boundary
Content-Disposition: form-data; name="844032"; filename="newDoc.pdf"
Content-Type: application/pdf
%PDF-1.7 //// The content of the file starts here
%ยตยตยตยต
1 0 obj
........
------boundary--
Before this approach I tried to convert the bytes[] ToBase64String and send an body like this:
------boundary
Content-Disposition: form-data; name="Master_URL"
https://MyUrl/Windchill/servlet/WindchillGW
------boundary
Content-Disposition: form-data; name="CacheDescriptor_array"
844033:844033:844033;
------boundary
Content-Disposition: form-data; name="844033"; filename="newDoc.pdf"
Content-Type: application/pdf
Content-Transfer-Encoding: base64
JVBERi0xLjcNCiW1tbW1DQox ........ //// The content of the file starts here
------boundary--
In this case, when I try to open the file i get the error "Failed to load PDF document". The file is corrupt.
I think the problem is on the stage 2, but I will share the body that i send in last stage for your understanding.
{"ContentInfo":[{"StreamId":844034,"EncodedInfo": "844034%3A40384%3A9276564%3A844034","FileName": "newDoc.pdf","PrimaryContent": true,"MimeType" : "application/pdf","FileSize" : 40384}]}
The StreamId and the EncodedInfo are returns of the stage 2 that I need to provide in the stage 3.
Anyone can see what I'm doing wrong? Anyone have some tips to help me to solve this issue?
Many thanks.
