HTTP 请求的 ZIP 文件内容类型

The standard MIME type for ZIP files is application/zip. The types for the files inside the ZIP does not matter for the MIME type.

As always, it ultimately depends on your server setup.

[request setValue:@"application/zip" forHTTPHeaderField:@"Content-Type"];

.zip    application/zip, application/octet-stream

If you want the MIME type for a file, you can use the following code:

- (NSString *)mimeTypeForPath:(NSString *)path
{
// get a mime type for an extension using MobileCoreServices.framework


CFStringRef extension = (__bridge CFStringRef)[path pathExtension];
CFStringRef UTI = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, extension, NULL);
assert(UTI != NULL);


NSString *mimetype = CFBridgingRelease(UTTypeCopyPreferredTagWithClass(UTI, kUTTagClassMIMEType));
assert(mimetype != NULL);


CFRelease(UTI);


return mimetype;
}

In the case of a ZIP file, this will return application/zip.