NSString *itemJson = [NSString stringWithFormat:@"{"Id":"%@","ChanelNum":"%@","ChannelId":"%@","Name":"%@","RecognitionPictureName":"%@","RecognitionPictureName2":"%@","AssetBundleName":"%@"}",ID,ChanelNum,ChannelId,Name,RecognitionPictureName,RecognitionPictureName2,AssetBundleName];
NSData *jsonData = [itemJson dataUsingEncoding:NSUTF8StringEncoding];