相信許多公司項(xiàng)目有用過(guò)七牛云存儲(chǔ)來(lái)上傳圖片,但如果碰到更大的視頻音頻上傳,則需要考慮斷網(wǎng),強(qiáng)退等突發(fā)情況,從用戶體驗(yàn)上來(lái)說(shuō)肯定不希望重新下載,那么在這里就需要用到斷點(diǎn)續(xù)傳,下面來(lái)簡(jiǎn)單的講一下如何使用七牛的斷點(diǎn)續(xù)傳

首先用QNFileRecorder用來(lái)記錄斷點(diǎn)續(xù)傳的文件

QNFileRecorder *file = [QNFileRecorder fileRecorderWithFolder:[NSTemporaryDirectory() stringByAppendingString:@"qiniutest"] error:&error];

NSLog(@"recorder error %@", error);

_uploadManager = [[QNUploadManager alloc] initWithRecorder:file];

七牛斷點(diǎn)續(xù)傳是分片的,也可以根據(jù)需求修改配置,更改分片大小,chunkSize分片大小,recorder記錄文件

QNConfiguration *config = [QNConfiguration build:^(QNConfigurationBuilder *builder) {
        builder.chunkSize = 256 * 1024;
        builder.recorder = file;
    }];

_uploadManager = [[QNUploadManager alloc] initWithConfiguration:config]

QNUploadOption傳入一些高級(jí)選項(xiàng),mime:mime類型, progressHandler:進(jìn)度函數(shù),params:自定義服務(wù)器回調(diào)參數(shù),checkCrc:是否進(jìn)行crc檢查 cancellationSignal:中途取消函數(shù)

QNUploadOption *uploadOption = [[QNUploadOption alloc] initWithMime:nil progressHandler:^(NSString *key, float percent) {
        dispatch_async(dispatch_get_main_queue(), ^{
            NSLog(@"progress = %f ",percent);
        });
    } params:nil checkCrc:NO cancellationSignal:^BOOL{
        return NO;
    }];

token可以在前端自己生成,而且快速方便,但為了信息安全,這些都應(yīng)由服務(wù)器完成,所以開(kāi)始上傳前先向服務(wù)器發(fā)送請(qǐng)求獲取token,拿到token以后再開(kāi)始文件上傳

NSString *path = @"文件路徑";
NSString *key = @"上傳到云存儲(chǔ)的key";
NSString *token = @"上傳需要的token, 由服務(wù)器生成";
[_uploadManager putFile:path key:key token:token complete:^(QNResponseInfo *info, NSString *key, NSDictionary *resp) {
        if (info.isOK) {
            NSLog(@"success!");
        }
    } option:uploadOption];

以上就是七牛斷點(diǎn)續(xù)傳的一個(gè)簡(jiǎn)單流程