ios用AFN进行文件上传的示例代码

- (void)upload{  NSData *imageData = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"mine.jpeg" ofType:nil]];  NSDictionary* URLParameters = @{//设置请求头 };  NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"mine.jpeg" ofType:nil]];  NSURLRequest *request = [NSURLRequest requestWithURL:url];  NSURLResponse *repsonse = nil;  [NSURLConnection sendSynchronousRequest:request returningResponse:&repsonse error:nil];    NSString *mimeType = repsonse.MIMEType;  NSLog(@"%@", repsonse.MIMEType);    [[AFHTTPSessionManager manager] POST:@"上传网址" parameters:URLParameters constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData) {    [formData appendPartWithFileData:imageData name:@"file" fileName:@"mine.jpeg" mimeType:mimeType];  } progress:^(NSProgress * _Nonnull uploadProgress) {    //      } success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {    //处理成功      } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {    //处理失败      }];  }