【发布时间】：2017-03-12 19:34:35
【问题描述】：
我在 macOS 上创建新的 AspNetCore 应用程序并添加 EF Core 包。 我尝试使用方法 SaveChanges()（DbContext 类）将数据保存到数据库中并得到下一个错误：
"System.DllNotFoundException: 无法加载 DLL 'System.Security.Cryptography.Native.Apple'：指定模块 找不到。”
我使用以下说明安装 openssl：
- 酿造更新
- brew install openssl
- ln -s /usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib /usr/local/lib/
- ln -s /usr/local/opt/openssl/lib/libssl.1.0.0.dylib /usr/local/lib/
操作系统：macOS(10.12.1)
project.json:
{
"dependencies": {
"Microsoft.NETCore.App": {
"version": "1.0.1",
"type": "platform"
},
"Microsoft.AspNetCore.Mvc": "1.0.1",
"Microsoft.AspNetCore.Routing": "1.0.1",
"Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
"Microsoft.AspNetCore.Server.Kestrel": "1.0.1",
"Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
"Microsoft.Extensions.Configuration.FileExtensions": "1.0.0",
"Microsoft.Extensions.Configuration.Json": "1.0.0",
"Microsoft.Extensions.Configuration.CommandLine": "1.0.0",
"Microsoft.Extensions.Logging": "1.1.0-preview1-final",
"Microsoft.Extensions.Logging.Console": "1.1.0-preview1-final",
"Microsoft.Extensions.Logging.Debug": "1.1.0-preview1-final",
"Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
"Microsoft.EntityFrameworkCore": "1.1.0-preview1-final",
"Microsoft.Extensions.Logging.Abstractions": "1.1.0-preview1-final",
"Npgsql.EntityFrameworkCore.PostgreSQL": "1.0.2",
"Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview3-final",
"Npgsql.EntityFrameworkCore.PostgreSQL.Design": "1.0.2",
"Microsoft.EntityFrameworkCore.Design": "1.1.0-preview1-final"
},
"tools": {
"Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final",
"Microsoft.EntityFrameworkCore.Tools.DotNet": "1.0.0-preview3-final",
"Microsoft.EntityFrameworkCore.Tools": {
"version": "1.0.0-preview3-final",
"imports": [
"portable-net45+win8+dnxcore50",
"portable-net45+win8"
]
}
},
"frameworks": {
"netcoreapp1.0": {
"imports": [
"dotnet5.6",
"portable-net45+win8"
],
"buildOptions": {
"emitEntryPoint": true
}
}
},
"buildOptions": {
"emitEntryPoint": true,
"preserveCompilationContext": true
},
"runtimeOptions": {
"configProperties": {
"System.GC.Server": true
}
},
"publishOptions": {
"include": [
"wwwroot",
"**/*.cshtml",
"appsettings.json",
"web.config"
]
},
"scripts": {
"postpublish": [
"dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%"
]
},
"tooling": {
"defaultNamespace": "TTT"
}
}
有人知道我做错了什么吗？
谢谢。
更新（添加堆栈跟踪信息）
fail: Microsoft.AspNetCore.Server.Kestrel[13]
Connection id "0HL01MGG6QKIE": An unhandled exception was thrown by the application.
System.DllNotFoundException: Unable to load DLL 'System.Security.Cryptography.Native.Apple': The specified module could not be found.
(Exception from HRESULT: 0x8007007E)
at Interop.AppleCrypto.DigestCreate(PAL_HashAlgorithm algorithm, Int32& cbDigest)
at Internal.Cryptography.HashProviderDispenser.AppleDigestProvider..ctor(PAL_HashAlgorithm algorithm)
at Internal.Cryptography.HashProviderDispenser.CreateHashProvider(String hashAlgorithmId)
at System.Security.Cryptography.MD5.Implementation..ctor()
at Npgsql.FrontendMessages.PasswordMessage.CreateMD5(String password, String username, Byte[] serverSalt)
at Npgsql.NpgsqlConnector.ProcessAuthenticationMessage(String username, AuthenticationRequestMessage msg)
at Npgsql.NpgsqlConnector.HandleAuthentication(String username, NpgsqlTimeout timeout)
at Npgsql.NpgsqlConnector.Open(NpgsqlTimeout timeout)
at Npgsql.ConnectorPool.Allocate(NpgsqlConnection conn, NpgsqlTimeout timeout)
at Npgsql.NpgsqlConnection.OpenInternal()
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open()
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.BeginTransaction(IsolationLevel isolationLevel)
at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute(Tuple`2 parameters)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(IReadOnlyList`1 entriesToSave)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(Boolean acceptAllChangesOnSuccess)
at Microsoft.EntityFrameworkCore.DbContext.SaveChanges(Boolean acceptAllChangesOnSuccess)
at TTT.Controllers.ValuesController.Get(Int32 id) in /Users/cmaker-note/Projects/AspNetCore/TTT/Controllers/ValuesController.cs:line 26
at lambda_method(Closure , Object , Object[] )
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeActionFilterAsync>d__28.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeAsync>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 Microsoft.AspNetCore.Builder.RouterMiddleware.<Invoke>d__4.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 Microsoft.AspNetCore.Hosting.Internal.RequestServicesContainerMiddleware.<Invoke>d__3.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 Microsoft.AspNetCore.Server.Kestrel.Internal.Http.Frame`1.<RequestProcessingAsync>d__2.MoveNext()
【问题讨论】：
-
我假设 .NET Core 运行时已正确安装？
-
是的。我使用这个(microsoft.com/net/core#macos) 指令。
标签： macos entity-framework asp.net-core entity-framework-core