Curl Post request to upload .zip file to Sharepoint returning "Compressed (zipped) folder invalid when downloading - rest

Question

I have a curl Post request that attempts to upload the latest documents to our Sharepoint. It appears to work fine, the file I send is valid and opens fine before I send it. Once it arrives on sharepoint the filesize is the same but when I download it appears to be corrupted and wont open.
I have tried manually uploading the zip file to Sharepoint, it works fine this way.
I have also scanned the internet for some solution to the problem but I am unable to find anything.
curl -X POST
"http://12.3.456.78:8080/TEST-2.0/sharepoint?relativePath=Shared%20Documents%2FRelease%20Documents%2Fv1&teamSite=Test"
-H "accept: /" -H "Content-Type: multipart/form-data" -F "file=#Test.zip;type=application/x-zip-compressed"
I expect the file on sharepoint to be valid and open correctly after download but I get the following error.
"Windows cannot open the folder.
The Compressed (zipped) Folder 'C:\Test.zip' is invalid.'

Answer 1

The answer was within the code, although the file was sending, it was obviously not sending correctly which was causing the corruption.
The line that I added that made the difference was the following.
post.setEntity( new FileEntity(file) );
My full method can be found below, feel free to comment if anyone needs further information on this in the future.
public HttpResponse uploadFile( String teamSite,
String relativePath,
String accessToken,
File file ) throws IOException
{
String fileName = null;
HttpClient client = HttpClientBuilder.create().build();
fileName = file.getName().replaceAll( " ", "%20" );
relativePath = relativePath.replaceAll( " ", "%20" );
teamSite = teamSite.replaceAll( " ", "%20" );
HttpPost post = new HttpPost( URL );
post.setHeader( "Accept", "application/json;odata=verbose" );
post.setHeader( "Authorization", "Bearer " + accessToken );
post.setEntity( new FileEntity(file) ); //This line here
HttpResponse response = client.execute( post );
HttpEntity entity = response.getEntity();
#SuppressWarnings("unused")
String responseString = EntityUtils.toString( entity, "UTF-8" );
return response;
}