【iOS开发】AFNetworking上传语音文件(.mp3)到服务器

一、业务环境

将本地的录音文件 .caf 文件通过网络上传到服务器，服务器将此文件保存为 .mp3 格式。

二、实现思路

( 1 ) 通过使用AVAudioRecorder，将录音文件保存到本地

( 2 ) 用AFNetworking上传本地 .caf 文件到服务器

( 3 ) 注意AFNetworking的 minetype 配置和AVAudioRecorder的参数配置，要不然会出现音频失帧和上传失败。

三、具体代码实现

( 1 ) 录音工具创建

/*
*  AVAudioRecorder 初始化
*/
- (AVAudioRecorder *)recorder {
    if (!_recorder) {

        // 1.获取沙盒地址

        NSString *filePath = [path stringByAppendingPathComponent:@"ihefe_ichat.caf"];
        self.recordFileUrl = [NSURL fileURLWithPath:filePath];
        NSLog(@"filePath: %@", filePath);

        // 2.录音参数设置
        NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
        //设置录音格式  AVFormatIDKey==kAudioFormatLinearPCM
        [recordSetting setValue:[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
        //设置录音采样率(Hz) 如：AVSampleRateKey==8000/44100/96000（影响音频的质量）, 采样率必须要设为11025才能使转化成mp3格式后不会失真
        [recordSetting setValue:[NSNumber numberWithFloat:11025.0] forKey:AVSampleRateKey];
        //录音通道数  1 或 2 ，要转换成mp3格式必须为双通道
        [recordSetting setValue:[NSNumber numberWithInt:2] forKey:AVNumberOfChannelsKey];
        //线性采样位数  8、16、24、32
        [recordSetting setValue:[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
        //录音的质量
        [recordSetting setValue:[NSNumber numberWithInt:AVAudioQualityHigh] forKey:AVEncoderAudioQualityKey];

        // 3.创建AVAudioRecorder对象
        _recorder = [[AVAudioRecorder alloc] initWithURL:self.recordFileUrl settings:recordSetting error:NULL];
        _recorder.delegate = self;
        _recorder.meteringEnabled = YES;

        [_recorder prepareToRecord];
    }
    return _recorder;
}

---

( 2 ) AFNetworking文件上传

/*
 *  上传.mp3文件
 */
- (void)uploadFile
{
    NSURL *mp3Url =  [NSURL URLWithString:@"自己随便写个音频文件地址"];//本例子是将本地的 .caf 文件上传到服务器上面去

    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript",@"text/html",@"image/jpeg", nil];
    NSMutableDictionary *para = [NSMutableDictionary dictionary];
    para[@"action"] = @"999";
    [manager POST:@"http://push.hjourney.cn/api.php?c=Index2" parameters:para constructingBodyWithBlock:^(id  _Nonnull formData) {

        //              application/octer-stream   audio/mpeg video/mp4   application/octet-stream

        /* url      :  本地文件路径
         * name     :  与服务端约定的参数
         * fileName :  自己随便命名的
         * mimeType :  文件格式类型 [mp3 : application/octer-stream application/octet-stream] [mp4 : video/mp4]
        */
        [formData appendPartWithFileURL:mp3Url name:@"video" fileName:@"xxx.mp3" mimeType:@"application/octet-stream" error:nil];

    } progress:^(NSProgress * _Nonnull uploadProgress) {

        float progress = 1.0 * uploadProgress.completedUnitCount / uploadProgress.totalUnitCount;
        NSLog(@"上传进度-----   %f",progress);

    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        NSLog(@"上传成功 %@",responseObject);

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"上传失败 %@",error);
    }];
}

Demo下载地址： Demo_RecordAndPlayVoice