我正在尝试使用 GZipStream 和 BinaryStream 解压缩流,但我失败了。
你能帮助我吗?
public static LicenseOwnerRoot GetLicenseFromStream(Stream stream)
{
using (BinaryReader br = new BinaryReader(stream))
{
string keyCrypto = br.ReadString();
string xmlCrypto = br.ReadString();
string key = Cryptography.Decrypt(keyCrypto);
string xml = Cryptography.Decrypt(key, xmlCrypto);
byte[] data = Encoding.UTF8.GetBytes(xml.ToCharArray());
using (MemoryStream ms = new MemoryStream(data))
{
using (GZipStream decompress = new GZipStream(ms, CompressionMode.Decompress))
{
xml = Encoding.UTF8.GetString(data);
LicenseOwnerRoot root = (LicenseOwnerRoot)Utility.XmlDeserialization(typeof(LicenseOwnerRoot), xml);
foreach (LicenseOwnerItem loi in root.Licenses)
loi.Root = root;
return root;
}
}
}
}
该xml被压缩和加密,所以我必须解压缩然后解密。当我尝试阅读时,会出现以下消息:GZip 标头中的幻数不正确。我尝试了很多次来解决这个问题,但这听起来可行。问题是:我应该如何使用'usings',如果这种方式是正确的,还是存在另一种方式来做我想做的事情?我必须先解压缩才能使用 BinaryReader?
实际上,我必须做这个方法的逆操作:
public static void GenerateLicenseStream(string key, LicenseOwnerRoot root, Stream stream)
{
using (BinaryWriter sw = new BinaryWriter(stream))
{
string xml = Utility.XmlSerialization(root);
using (MemoryStream ms = new MemoryStream())
{
using (GZipStream compress = new GZipStream(ms, CompressionMode.Compress))
{
byte[] data = Encoding.UTF8.GetBytes(xml.ToCharArray());
compress.Write(data, 0, data.Length);
string keyCrypto = Cryptography.Encrypt(key);
string xmlCrypto = Cryptography.Encrypt(key, Encoding.UTF8.GetString(ms.ToArray()));
sw.Write(keyCrypto);
sw.Write(xmlCrypto);
}
}
}
}