iOS AWS开发工具包将覆盖Content-Type属性

Question

I am trying to set the Content-Type property of my file as follows but when I inspect the file in the web, the content-type is reset to application/octet-stream

    S3PutObjectRequest *request = [[S3PutObjectRequest alloc] initWithKey:key inBucket:bucket];
    request.filename            = filePath;
    request.contentType         = [self mimeTypeForFileAtPath:operation.filePath]; //Returns @"image/jpeg"
    operation.operation         = [self.manager upload:request];

At the filepath resides a NSData written to a file with a UUID as filename (no file extension).

Any leads would be appreciated

Answer 1

I have found a workaround for this problem. Instead of providing the filename, I proved the data to the S3PutObjectRequest

request.data                = [NSData dataWithContentsOfFile:operation.filePath];
request.contentType         = [self mimeTypeForFileAtPath:operation.filePath];