目前我正在使用以下代码上传视频:
NSURLRequest *urlRequest = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:[[entity uploadUrl]absoluteString] parameters:entity.params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[UploadModel getAssetData:entity.asset resultHandler:^(NSData *filedata) {
NSString *mimeType =[FileHelper mimeTypeForFileAtUrl:entity.fileUrl];
// NSError *fileappenderror;
[formData appendPartWithFileData:filedata name:@"data" fileName: entity.filename mimeType:mimeType];
}];
} error:&urlRequestError];
GetAssetData 方法
+(void)getAssetData: (PHAsset*)mPhasset resultHandler:(void(^)(NSData *imageData))dataResponse{
PHVideoRequestOptions *options = [[PHVideoRequestOptions alloc] init];
options.version = PHVideoRequestOptionsVersionOriginal;
[[PHImageManager defaultManager] requestAVAssetForVideo:mPhasset options:options resultHandler:^(AVAsset *asset, AVAudioMix *audioMix, NSDictionary *info) {
if ([asset isKindOfClass:[AVURLAsset class]]) {
NSURL *localVideoUrl = [(AVURLAsset *)asset URL];
NSData *videoData= [NSData dataWithContentsOfURL:localVideoUrl];
dataResponse(videoData);
}
}];
}
这种方法的问题在于当上传大型/多个视频文件时，应用程序会简单地耗尽内存。我想这是由于请求文件（在上面的方法中查看）的NSDATA（又名
filedata）上传。我已经尝试使用appendPartWithFileURL方法请求文件路径，而不是 appendPartWithFileData ，在模拟器上可以运行。但在真实设备上失败，显示指定路径无法读取该文件的错误。我在这里描述了这个问题：
PHAsset + AFNetworking. Unable to upload files to the server on a real device
更新：为了测试在新的iPhone 6s+上通过本地路径上传文件的方法，我已经修改了我的代码如下。
NSURLRequest *urlRequest = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:[[entity uploadUrl]absoluteString] parameters:entity.params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
NSString *mimeType =[FileHelper mimeTypeForFileAtUrl:entity.fileUrl];
NSError *fileappenderror;
[formData appendPartWithFileURL:entity.fileUrl name:@"data" fileName:entity.filename mimeType:mimeType error:&fileappenderror];
if (fileappenderror) {
[Sys MyLog: [NSString stringWithFormat:@"Failed to append: %@", [fileappenderror localizedDescription] ] ];
}
} error:&urlRequestError];
在iPhone 6s+上进行测试时，日志警告更加明显。这是调用方法 appendPartWithFileURL 的结果。
<Warning>: my_log: Failed to append file: The operation couldn’t be completed. File URL not reachable.
deny(1) file-read-metadata /private/var/mobile/Media/DCIM/100APPLE/IMG_0008.MOV
15:41:25 iPhone-6s kernel[0] <Notice>: Sandbox: My_App(396) deny(1) file-read-metadata /private/var/mobile/Media/DCIM/100APPLE/IMG_0008.MOV
15:41:25 iPhone-6s My_App[396] <Warning>: my_log: Failed to append file: The file “IMG_0008.MOV” couldn’t be opened because you don’t have permission to view it.
以下是从PHAsset中获取本地文件路径的代码：
if (mPhasset.mediaType == PHAssetMediaTypeImage) {
PHContentEditingInputRequestOptions * options = [[PHContentEditingInputRequestOptions alloc]init];
options.canHandleAdjustmentData = ^BOOL(PHAdjustmentData *adjustmeta){
return YES;
};
[mPhasset requestContentEditingInputWithOptions:options completionHandler:^(PHContentEditingInput * _Nullable contentEditingInput, NSDictionary * _Nonnull info) {
dataResponse(contentEditingInput.fullSizeImageURL);
}];
}else if(mPhasset.mediaType == PHAssetMediaTypeVideo){
PHVideoRequestOptions *options = [[PHVideoRequestOptions alloc] init];
options.version = PHVideoRequestOptionsVersionOriginal;
[[PHImageManager defaultManager] requestAVAssetForVideo:mPhasset options:options resultHandler:^(AVAsset *asset, AVAudioMix *audioMix, NSDictionary *info) {
if ([asset isKindOfClass:[AVURLAsset class]]) {
NSURL *localVideoUrl = [(AVURLAsset *)asset URL];
dataResponse(localVideoUrl);
}
}];
}
因此问题仍然存在-上传到服务器的文件为空。