iOS模仿断点机制上传文件实现方法

] = @(model.totalSize);

parameters[@"suffix"] = model.filePath.pathExtension;

parameters[@"token"] = @"";

parameters[@"upToken"] = model.upToken;

parameters[@"crc"] = @"";

parameters[@"sequenceNo"] = @(i + 1);

NSString *requestUrl = [[Api getRootUrl] stringByAppendingString:@"上传接口"];

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

NSURLSessionDataTask *dataTask = [manager POST:requestUrl parameters:parameters constructingBodyWithBlock:^(id _Nonnull formData) {

NSFileHandle *handle = [NSFileHandle fileHandleForReadingAtPath:model.filePath];

[handle seekToFileOffset:kSuperUploadBlockSize * i];

NSData *blockData = [handle readDataOfLength:kSuperUploadBlockSize];

[formData appendPartWithFileData:blockData name:@"block" fileName:model.filePath.lastPathComponent mimeType:@"application/octet-stream"];

} success:^(NSURLSessionDataTask * _Nonnull task, id _Nonnull respon搜刮引擎优化bject) {

i ++;

model.uploadedCount = i;

NSDictionary *dataDict = respon搜刮引擎优化bject[kRet_success_data_key];

NSString *fileUrl = dataDict[@"fileUrl"];

if ([fileUrl isKindOfClass:[NSString class]]) {

[model.parameters setValue:fileUrl forKey:@"url"];

// 最后所有片段上传完毕，办事器返回文件url，履行后续操作

[self saveRequest:model];

}else {

if (i < model.totalCount) {

[self continueUploadWithModel:model];

}

} failure:^(NSURLSessionDataTask * _Nonnull task, NSError * _Nonnull error) {

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