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我嘗試自定義聲明添加到現有的用戶身份的一個要求，但我在運行時得到一個異常：無法添加與ASP.NET核心和身份
Npgsql.PostgresException: 23502: null value in column "Id" violates not-null constraint
幫助！
我做了什麼。我創建使用下面的命令行
dotnet new mvc --auth Individual --framework netcoreapp1.1
我所做的更改發現here，使應用程序使用PostgreSQL作爲後端數據庫窗口一個簡單的Web應用程序。創建的默認webapp工作正常。我可以作爲一個新的用戶註冊，登錄，註銷等..
然後我修改的家庭控制器的測試方法（我知道的例外是醜陋的）：
[Authorize]
public async Task<IActionResult> Test()
{
var user = await GetCurrentUserAsync();
if (user == null) {
_logger.LogWarning("User is null.");
throw new Exception("Not logged in");
}
_logger.LogWarning("User: {0}, {1}", user.Email, user);
var claim = new Claim("TestClaimType", "TestClaimValue");
IdentityResult idRes = IdentityResult.Failed();
if (_userManager.SupportsUserClaim) {
idRes = await _userManager.AddClaimAsync(user, claim); <------- Adding the claim
}
_logger.LogWarning("Return from adding claim");
if (idRes != IdentityResult.Success) {
throw new Exception("Failed to add claim.");
}
return View();
}
在登錄後我觸發試驗方法，並得到以下日誌記錄（該PostgresException已經接近尾聲）：
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
Request starting HTTP/1.1 GET http://localhost:5000/Home/Test
info: Microsoft.AspNetCore.Authentication.Cookies.CookieAuthenticationMiddleware[3]
HttpContext.User merged via AutomaticAuthentication from authenticationScheme: Identity.Application.
info: Microsoft.AspNetCore.Authorization.DefaultAuthorizationService[1]
Authorization was successful for user: [email protected]
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1]
Executing action method AlumniConnect.Controllers.HomeController.Test (AlumniConnect) with arguments ((null)) - ModelState is Valid
info: Microsoft.EntityFrameworkCore.Storage.IRelationalCommandBuilderFactory[1]
Executed DbCommand (1ms) [Parameters=[@__get_Item_0='?'], CommandType='Text', CommandTimeout='30']
SELECT "e"."Id", "e"."AccessFailedCount", "e"."ConcurrencyStamp", "e"."Email", "e"."EmailConfirmed", "e"."LockoutEnabled", "e"."LockoutEnd", "e"."NormalizedEmail", "e"."NormalizedUserName", "e"."PasswordHash", "e"."PhoneNumber", "e"."PhoneNumberConfirmed", "e"."SecurityStamp", "e"."TwoFactorEnabled", "e"."UserName"
FROM "AspNetUsers" AS "e"
WHERE "e"."Id" = @__get_Item_0
LIMIT 1
warn: AlumniConnect.Controllers.HomeController[0]
User: [email protected], [email protected]
warn: AlumniConnect.Controllers.HomeController[0]
User: [email protected], [email protected]
info: Microsoft.EntityFrameworkCore.Storage.IRelationalCommandBuilderFactory[1]
Executed DbCommand (4ms) [Parameters=[@__normalizedUserName_0='?'], CommandType='Text', CommandTimeout='30']
SELECT "u"."Id", "u"."AccessFailedCount", "u"."ConcurrencyStamp", "u"."Email", "u"."EmailConfirmed", "u"."LockoutEnabled", "u"."LockoutEnd", "u"."NormalizedEmail", "u"."NormalizedUserName", "u"."PasswordHash", "u"."PhoneNumber", "u"."PhoneNumberConfirmed", "u"."SecurityStamp", "u"."TwoFactorEnabled", "u"."UserName"
FROM "AspNetUsers" AS "u"
WHERE "u"."NormalizedUserName" = @__normalizedUserName_0
LIMIT 1
info: Microsoft.EntityFrameworkCore.Storage.IRelationalCommandBuilderFactory[1]
Executed DbCommand (33ms) [Parameters=[@p0='?', @p1='?', @p2='?', @p17='?', @p3='?', @p4='?', @p18='?', @p5='?', @p6='?', @p7='?', @p8='?', @p9='?', @p10='?', @p11='?', @p12='?', @p13='?', @p14='?', @p15='?', @p16='?'], CommandType='Text', CommandTimeout='30']
INSERT INTO "AspNetUserClaims" ("ClaimType", "ClaimValue", "UserId")
VALUES (@p0, @p1, @p2)
RETURNING "Id";
UPDATE "AspNetUsers" SET "AccessFailedCount" = @p3, "ConcurrencyStamp" = @p4, "Email" = @p5, "EmailConfirmed" = @p6, "LockoutEnabled" = @p7, "LockoutEnd" = @p8, "NormalizedEmail" = @p9, "NormalizedUserName" = @p10, "PasswordHash" = @p11, "PhoneNumber" = @p12, "PhoneNumberConfirmed" = @p13, "SecurityStamp" = @p14, "TwoFactorEnabled" = @p15, "UserName" = @p16
WHERE "Id" = @p17 AND "ConcurrencyStamp" = @p18;
fail: Microsoft.EntityFrameworkCore.DbContext[1]
An exception occurred in the database while saving changes.
Microsoft.EntityFrameworkCore.DbUpdateException: An error occurred while updating the entries. See the inner exception for details. ---> Npgsql.PostgresException: 23502: null value in column "Id" violates not-null constraint
at Npgsql.NpgsqlConnector.<DoReadMessageAsync>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
有很多記錄更多，但它似乎並沒有增加新的信息。我在整個日誌中看到了多次提到的相同異常。
我該怎麼辦？這是PostgreSQL的特定問題嗎？我是否試圖以錯誤的方式添加索賠？
謝謝！
Npgsql.PostgresException：23502：在列「ID」空值違反非空約束。看起來像[dbo]上的Id，[AspNetUserClaims]沒有被設置。你可以檢查用戶對象上的Id嗎？ –
我沒有辦法檢查這個。 Claim類沒有ID屬性。我認爲，由於UserManager來自身份庫，因此會提供ID。是不是代碼需要自動生成一個ID，而事實並非如此？嗯，'RETURNING'Id''似乎暗示了類似的東西。 –
我假設用戶對象上的Id屬性未設置，但該對象不爲空。你可以在測試中粘貼一個斷點並檢查用戶對象。 –