Question

从ASP 5 beta 7更新代码库到RC1-final后，我开始从JwtBearer中间件接收此异常

Unable to cast object of type 'Newtonsoft.Json.Linq.JArray' to type 'System.IConvertible'.

到目前为止我能看到的决定因素似乎是选项的设置.AutomaticAuthenticate。如果它是true，那么我得到例外，否则，我没有。

什么是AutomaticAuthenticate，为什么我需要启用它？

    app.UseJwtBearerAuthentication(options =>
    {
        options.AutomaticAuthenticate = true; 
    }

这是完整的堆栈跟踪：

at System.Convert.ToInt32(Object value, IFormatProvider provider)
   at System.IdentityModel.Tokens.Jwt.JwtPayload.GetIntClaim(String claimType)
   at System.IdentityModel.Tokens.Jwt.JwtPayload.get_Nbf()
   at System.IdentityModel.Tokens.Jwt.JwtSecurityTokenHandler.ValidateToken(String token, TokenValidationParameters validationParameters, SecurityToken& validatedToken)
   at Microsoft.AspNet.Authentication.JwtBearer.JwtBearerHandler.<HandleAuthenticateAsync>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNet.Authentication.JwtBearer.JwtBearerHandler.<HandleAuthenticateAsync>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at Microsoft.AspNet.Authentication.AuthenticationHandler`1.<InitializeAsync>d__48.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at Microsoft.AspNet.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at Api.Startup.<<Configure>b__9_0>d.MoveNext() in ...\Startup.cs:line 156

根本原因更新

我们的代码库正在为nbf，exp和iat创建重复声明。这就解释了为什么get_Nbf在堆栈跟踪中以及关于＆＃34; JArray＆＃34;因为每个值都是数组而不是值。

Answer 1

如果设置为true，那么中间件将在每个入站请求上运行，查找一个JWT令牌，如果有一个它将验证它，如果有效则从中创建一个身份并将其添加到当前用户。

如果其false没有发生，您需要通过在授权属性中指定承载方案来请求中间件设置标识。

[Authorize(AuthenticationSchemes = "YourBearerSchemeName")]

或者你在政策中设置了这个;

options.AddPolicy("RequireBearer", policy =>
{
    policy.AuthenticationSchemes.Add("YourBearerSchemeName");
    policy.RequireAuthenticatedUser();

});

因此，通过将其设置为false，您实际上不会运行持有者的内容，直到您要求它为止，您只是将该异常关闭，直到稍后。

options. Purpose.AutomaticAuthenticate with UseJwtBearerAuthentication

1 个答案: