我希望通过服务帐户获取Google Analytics的数据.
当我第一次启动应用程序时,一切正常,我可以访问数据.但是,当我第二次启动应用程序时,出现以下错误：“系统找不到指定的路径”.你有个主意吗？我以为它可以锁定.
当我第一次启动应用程序时,一切正常,我可以访问数据.但是,当我第二次启动应用程序时,出现以下错误：“系统找不到指定的路径”.你有个主意吗？我以为它可以锁定.
这是我的源代码：
public static String GetAccessToken(string clientIdEMail,string keyFilePath,String scope)
{
// certificate
var certificate = new X509Certificate2(keyFilePath,"notasecret",X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.Exportable);
// header
var header = new { typ = "JWT",alg = "RS256" };
// claimset
var times = GetExpiryAndIssueDate();
var claimset = new
{
iss = clientIdEMail,scope = scope,aud = "https://accounts.google.com/o/oauth2/token",iat = times[0],exp = times[1],};
JavaScriptSerializer ser = new JavaScriptSerializer();
// encoded header
var headerSerialized = ser.Serialize(header);
var headerBytes = Encoding.UTF8.GetBytes(headerSerialized);
var headerEncoded = Convert.ToBase64String(headerBytes);
// encoded claimset
var claimsetSerialized = ser.Serialize(claimset);
var claimsetBytes = Encoding.UTF8.GetBytes(claimsetSerialized);
var claimsetEncoded = Convert.ToBase64String(claimsetBytes);
// input
var input = headerEncoded + "." + claimsetEncoded;
var inputBytes = Encoding.UTF8.GetBytes(input);
// signiture
var rsa = certificate.PrivateKey as RSACryptoServiceProvider;
var cspParam = new CspParameters
{
KeyContainerName = rsa.CspKeyContainerInfo.KeyContainerName,KeyNumber = rsa.CspKeyContainerInfo.KeyNumber == KeyNumber.Exchange ? 1 : 2,Flags = CspProviderFlags.UseMachineKeyStore
};
var aescsp = new RSACryptoServiceProvider(1024,cspParam) { PersistKeyInCsp = false };
var signatureBytes = aescsp.SignData(inputBytes,"SHA256");
var signatureEncoded = Convert.ToBase64String(signatureBytes);
// jwt
var jwt = headerEncoded + "." + claimsetEncoded + "." + signatureEncoded;
var client = new WebClient();
client.Encoding = Encoding.UTF8;
var uri = "https://accounts.google.com/o/oauth2/token";
var content = new NameValueCollection();
content["assertion"] = jwt;
content["grant_type"] = "urn:ietf:params:oauth:grant-type:jwt-bearer";
string response = Encoding.UTF8.GetString(client.UploadValues(uri,"POST",content));
JsonGoogleResponse result = (ser.Deserialize<JsonGoogleResponse>(response));
return result.access_token;
}
这是堆栈：
à System.Security.Cryptography.CryptographicException.ThrowCryptogaphicException(Int32 hr) à System.Security.Cryptography.SafeProvHandle._FreeCSP(IntPtr pProvCtx) à System.Security.Cryptography.SafeProvHandle.ReleaseHandle() à System.Runtime.InteropServices.SafeHandle.InternalFinalize() à System.Runtime.InteropServices.SafeHandle.Dispose(Boolean disposing) à System.Runtime.InteropServices.SafeHandle.Finalize()
