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我正在使用以下代码上传多个音频文件

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager 管理器];

[manager POST:requestUrl parameters:jsonParameter constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    //add audio data one by one
    for(int i=0; i<[pathArr count];i++)
    {
        AudioFile *audiofile = [pathArr objectAtIndex:i];
        NSData *audioData = [[NSFileManager defaultManager] contentsAtPath:audiofile.filePath];
        NSString *strName = [[pathArr objectAtIndex:i] lastPathComponent];
        [formData appendPartWithFormData:audioData name:strName];
    }

} success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"Success: %@", responseObject);
    [self.delegate uploadingFileResponseReceieved:responseObject];

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

但现在我还想为每个音频文件发送文件名、文件大小和文件创建日期参数。我怎样才能做到这一点？

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