我有一个需要上传到服务器的文件,我被告知在上传之前将文件分成多个块。所以这是一个问题:
1)我已将文件转换为“数据”类型(字节)。如何将其分成每个1MB的块? 2)拆分后,如何使用Alamofire上传?如果不能使用Alamofire,请推荐我该怎么做。
我正在使用swift 3和Code 8.3。非常感谢任何帮助。
答案 0 :(得分:5)
我认为这可能有用
let path = Bundle.main.url(forResource: "test", withExtension: "png")!
do
{
let data = try Data(contentsOf: path)
let dataLen = (data as NSData).length
let fullChunks = Int(dataLen / 1024) // 1 Kbyte
let totalChunks = fullChunks + (dataLen % 1024 != 0 ? 1 : 0)
var chunks:[Data] = [Data]()
for chunkCounter in 0..<totalChunks
{
var chunk:Data
let chunkBase = chunkCounter * 1024
var diff = 1024
if chunkCounter == totalChunks - 1
{
diff = dataLen - chunkBase
}
let range:Range<Data.Index> = Range<Data.Index>(chunkBase..<(chunkBase + diff))
chunk = data.subdata(in: range)
chunks.append(chunk)
}
// Send chunks as you want
debugPrint(chunks)
}
catch
{
// Handle error
}