[英]C# How to check if downloaded zip archive is corrupted ('End of Central Directory record could not be found' exception thrown)
我正在使用以下代碼從遠程共享中打開、解壓縮和讀取文件:
using (FileStream fs = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read, 2 << 18))
using (ZipArchive za = new ZipArchive(fs))
{
foreach (ZipArchiveEntry zae in za.Entries)
using (StreamReader sr = new StreamReader(zae.Open(), Encoding.GetEncoding(1251), true, 2 << 18))
{
while (!sr.EndOfStream)
{
// reading logic
}
}
}
如何檢查下載的存檔是否損壞?
解決方案:
bool ValidateZip(FileStream fs)
{
using (BinaryReader br = new BinaryReader(fs))
{
br.BaseStream.Seek(-22, SeekOrigin.End);
return br.ReadUInt32() == 0x06054b50;
}
}
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