Ios Iphone：如何将NSData视频文件分割成块，并将块逐个上传到服务器？

我一直在尝试将视频文件分割成块，并将块逐个发送到服务器。但我不确定我写的逻辑或代码是否正确！如果你能帮我做这个

-(void)multipart:(NSData *)file ;
{
NSDate *currentTime = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"hh-mm"];
NSString *resultString = [dateFormatter stringFromDate: currentTime];

myDid = [[NSString alloc]initWithString:[[UIDevice currentDevice]uniqueIdentifier]];

upload_Id = [NSString stringWithFormat:@"%@%@", myDid, resultString];
NSLog(@"%@", upload_Id);


NSUInteger length = [file length];
NSUInteger chunkSize = 100 * 1024;
NSUInteger offset = 0;
do {
    NSUInteger thisChunkSize = length - offset > chunkSize ? chunkSize : length - offset;
    NSData *chunk = [NSData dataWithBytesNoCopy:(char *)[file bytes] + offset length:thisChunkSize freeWhenDone:YES];       

    //NSLog(@"%@", chunk);
    //NSLog(@"%@", thisChunkSize);
    NSDictionary *dictionary = [[NSDictionary alloc] initWithObjectsAndKeys:@"mov", @"uploadExtn", upload_Id, @"uploadId",offset , @"uploadedByte",  nil];
    NSDictionary *mainDictionary = [[NSDictionary alloc]initWithObjectsAndKeys:@"createContent",@"type",dictionary,@"data", nil];

    NSString *mainString = [mainDictionary JSONRepresentation];

    offset += thisChunkSize;
    NSLog(@"%d", offset);
    //[chunk writeToFile:[self.recordedChunkFile path] atomically:YES];
    //NSLog(@"%@", [self.recordedChunkFile path]);
    //NSString* path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask,YES) lastObject];

      NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@://%@/%@",[[NSUserDefaults standardUserDefaults]                           objectForKey:DEFAULTS_SET_HTTP_SWITCH],DB_SAVED_SERVER,API_MULTIPART_UPLOAD]];

    __block ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
    //[request setFile:[self.recordedChunkFile path] forKey:@"data1"];
    // Upload an NSData instance
    [request setData:chunk withFileName:upload_Id andContentType:@"video/mov" forKey:@"data1"];
    [request setPostValue:mainString forKey:@"jsonData"];




} while (offset < length);
}

-（void）多部分：（NSData*）文件；
{
NSDate*currentTime=[NSDate日期]；
NSDateFormatter*dateFormatter=[[NSDateFormatter alloc]init]；
[日期格式化程序setDateFormat:@“hh-mm”]；
NSString*resultString=[dateFormatter stringFromDate:currentTime]；
myDid=[[NSString alloc]initWithString:[[UIDevice currentDevice]uniqueIdentifier]]；
upload_Id=[NSString stringWithFormat:@“%@%@”，myDid，resultString]；
NSLog（@“%@”，上载Id）；
NSU整数长度=[文件长度]；
NSU整数chunkSize=100*1024；
整数偏移=0；
做{
NSUInteger thisChunkSize=长度-偏移>chunkSize？chunkSize:长度-偏移；
NSData*chunk=[NSData datawithbytesnopy:（char*）[文件字节]+偏移量长度：thishchunksize freehendone:YES]；
//NSLog（@“%@”，块）；
//NSLog（@“%@”，thishchunksize）；
NSDictionary*dictionary=[[NSDictionary alloc]initWithObjectsAndKeys:@“mov”@“uploadExtn”、upload_Id、@“uploadId”、offset、@“uploadedByte”、nil]；
NSDictionary*mainDictionary=[[NSDictionary alloc]initWithObjectsAndKeys:@“createContent”，“type”，dictionary，@“data”，nil]；
NSString*mainString=[mainDictionary JSONRepresentation]；
偏移量+=此块大小；
NSLog（@“%d”，偏移量）；
//[chunk writeToFile:[self.recordedChunkFile path]原子：是]；
//NSLog（@“%@，[self.recordedChunkFile path]）；
//NSString*path=[NSSearchPathForDirectoriesInDomains（NSCachesDirectory，NSUserDomainMask，YES）lastObject]；
NSURL*url=[NSURL URLWithString:[NSString stringWithFormat:@“%@:/%@/%/%/%@”，[[NSSERDEFAULTS standardUserDefaults]objectForKey:DEFAULTS\u SET\u HTTP\u SWITCH]，DB\u SAVED\u SERVER，API\u MULTIPART\u UPLOAD]；
__block ASIFormDataRequest*request=[AsiformDataRequestRequestWithURL:url]；
//[请求集文件：[self.recordedChunkFile路径]forKey:@“data1”]；
//上载NSData实例
[请求setData:chunk with filename:upload_Id and contenttype:@“video/mov”forKey:@“data1”]；
[请求setPostValue:mainString forKey:@“jsonData”]；
}而（偏移量<长度）；
}

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谢谢

在我看来，拆分数据是可以的。但是你有没有处理过一些区块上传失败的案例。请考虑这些问题，然后相应地修改您的代码。我不确定如何将区块上传到我的url：（有人可以帮助我解决代码问题，以便如何将区块上传到我的url。