“预期的锁定文件不存在，请执行”dnu restore“后立即执行

Question

我正在为包括EF 7在内的所有设备运行beta7。我试图连接到使用远程现有数据库ASP.NET 5应用程序模板项目。我project.json看起来是这样的：

{ 
    "webroot": "wwwroot", 
    "userSecretsId": "aspnet5-XXX-409e9e37-b7bb-4185-b7aa-6dc336087524", 
    "version": "1.0.0-*", 

    "dependencies": { 
    "EntityFramework.Commands": "7.0.0-beta7", 
    "EntityFramework.SqlServer": "7.0.0-beta7", 
    "Microsoft.AspNet.Authentication.Cookies": "1.0.0-beta7", 
    "Microsoft.AspNet.Authentication.Facebook": "1.0.0-beta7", 
    "Microsoft.AspNet.Authentication.Google": "1.0.0-beta7", 
    "Microsoft.AspNet.Authentication.MicrosoftAccount": "1.0.0-beta7", 
    "Microsoft.AspNet.Authentication.Twitter": "1.0.0-beta7", 
    "Microsoft.AspNet.Diagnostics": "1.0.0-beta7", 
    "Microsoft.AspNet.Diagnostics.Entity": "7.0.0-beta7", 
    "Microsoft.AspNet.Identity.EntityFramework": "3.0.0-beta7", 
    "Microsoft.AspNet.Mvc": "6.0.0-beta7", 
    "Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-beta7", 
    "Microsoft.AspNet.Server.IIS": "1.0.0-beta7", 
    "Microsoft.AspNet.Server.WebListener": "1.0.0-beta7", 
    "Microsoft.AspNet.StaticFiles": "1.0.0-beta7", 
    "Microsoft.AspNet.Tooling.Razor": "1.0.0-beta7", 
    "Microsoft.Framework.Configuration.Abstractions": "1.0.0-beta7", 
    "Microsoft.Framework.Configuration.Json": "1.0.0-beta7", 
    "Microsoft.Framework.Configuration.UserSecrets": "1.0.0-beta7", 
    "Microsoft.Framework.Logging": "1.0.0-beta7", 
    "Microsoft.Framework.Logging.Console": "1.0.0-beta7", 
    "Microsoft.Framework.Logging.Debug" : "1.0.0-beta7", 
    "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0-beta7" 
    }, 

    "commands": { 
    "web": "Microsoft.AspNet.Hosting --config hosting.ini", 
    "ef": "EntityFramework.Commands" 
    }, 

    "frameworks": { 
    "dnx451": { }, 
    "dnxcore50": { } 
    }, 

    "exclude": [ 
    "wwwroot", 
    "node_modules", 
    "bower_components" 
    ], 

    "publishExclude": [ 
    "node_modules", 
    "bower_components", 
    "**.xproj", 
    "**.user", 
    "**.vspscc" 
    ], 

    "scripts": { 
    "prepublish": [ "npm install", "bower install", "gulp clean", "gulp min" ] 
    } 
} 

做一个网上搜索它似乎是为了完成我想我需要运行下面的命令：

dnx ef dbcontext scaffold "ConnectionString" EntityFramework.SqlServer 

，我可以这样做，因为我这里解释这是亟待解决的问题： Using existing database with ASP.NET 5 and EF7 (beta 7)

现在我终于可以去运行命令“DNX”，但是当我试图用我的ConnectionString，它看起来像这样运行它：

dnx ef dbcontext scaffold "Data Source=192.168.XX.XXX\devsql;Initial 
Catalog=Development;Integrated Security=False;User ID=system;Password=XXX;" 
EntityFramework.SqlServer 

它给了我下面的错误：

[ERROR] dnx : System.InvalidOperationException: Failed to resolve the 
following dependencies for target framework 'DNXCore,Version=v5.0': 
[ERROR] En línea: 1 Carácter: 1 [ERROR] + dnx ef dbcontext scaffold 
"Data Source=192.168.XX.XXX\devsql;Initial Catalog=Dev ... [ERROR] + 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
[ERROR]  + CategoryInfo   : NotSpecified: 
(System.InvalidO...,Version=v5.0'::String) [], RemoteException [ERROR] 
+ FullyQualifiedErrorId : NativeCommandError [ERROR] [ERROR] EntityFramework.Commands 7.0.0-beta7 [ERROR] 
EntityFramework.SqlServer 7.0.0-beta7 [ERROR] 
Microsoft.AspNet.Authentication.Cookies 1.0.0 [ERROR] -beta7 [ERROR] 
Microsoft.AspNet.Authentication.Facebook 1.0.0-beta7 [ERROR] 
Microsoft.AspNet.Authentication.Google 1.0.0-beta7 [ERROR] 
Microsoft.AspNet.Authentication.MicrosoftAccount 1.0.0-beta7 [ERROR] 
Microsoft.AspNet.Authentication.Twitter 1.0.0-beta7 [ERROR] 
Microsoft.AspNet.Diagnostics 1.0.0-beta7 [ERROR] 
Microsoft.AspNet.Diagnostics.Entity 7.0.0-beta7 [ERROR] 
Microsoft.AspNet.Identity.EntityFramework 3.0.0-beta7 [ERROR] 
Microsoft.AspNet.Mvc 6.0.0-beta7 [ERROR] 
Microsoft.AspNet.Mvc.TagHelpers 6.0.0-beta7 [ERROR] 
Microsoft.AspNet.Server.IIS 1.0.0-beta7 [ERROR] 
Microsoft.AspNet.Server.WebListener 1.0.0-beta7 [ERROR] 
Microsoft.AspNet.StaticFiles 1.0.0-beta7 [ERROR] 
Microsoft.AspNet.Tooling.Razor 1.0.0-beta7 [ERROR] 
Microsoft.Framework.Configuration.Abstractions 1.0.0-beta7 [ERROR] 
Microsoft.Framework.Configuration.Json 1.0.0-beta7 [ERROR] 
Microsoft.Framework.Configuration.UserSecrets 1.0.0-beta7 [ERROR] 
Microsoft.Framework.Logging 1.0.0-beta7 [ERROR] 
Microsoft.Framework.Logging.Console 1.0.0-beta7 [ERROR] 
Microsoft.Framework.Logging.Debug 1.0.0-beta7 [ERROR] 
Microsoft.VisualStudio.Web.BrowserLink.Loader 14.0.0-beta7 [ERROR] 
[ERROR] 
C:\XXX\XXX\src\XXX\project.lock.json(1,0): 
error: The expected lock file doesn't exist. Please run "dnu restore" 
to generate a new lock file. [ERROR] Current runtime target framework: 
'DNXCore,Version=v5.0 (dnxcore50)' [ERROR] Version:  
1.0.0-beta7-15532 [ERROR] Type:   CoreCLR [ERROR] Architecture: x64 [ERROR] OS Name:  Windows [ERROR] OS Version: 
6.1 [ERROR] [ERROR] at Microsoft.Dnx.Runtime.DefaultHost.GetEntryPoint(String 
applicationName) [ERROR] at 
Microsoft.Dnx.ApplicationHost.Program.ExecuteMain(DefaultHost host, 
String applicationName, String[] args) [ERROR] at 
Microsoft.Dnx.ApplicationHost.Program.Main(String[] args) [ERROR] --- 
End of stack trace from previous location where exception was thrown 
--- [ERROR] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [ERROR] 
at Microsoft.Dnx.Runtime.Common.EntryPointExecutor.Execute(Assembly 
assembly, String[] args, IServiceProvider serviceProvider) [ERROR] 
at Microsoft.Dnx.Host.Bootstrapper.RunAsync(List`1 args, 
IRuntimeEnvironment env, FrameworkName targetFramework) [ERROR] at 
Microsoft.Dnx.Host.RuntimeBootstrapper.ExecuteAsync(String[] args, 
FrameworkName targetFramework) [ERROR] at 
Microsoft.Dnx.Host.RuntimeBootstrapper.Execute(String[] args, 
FrameworkName targetFramework) [ERROR] 

鉴于

[ERROR] 
C:\XXX\XXX\src\XXX\project.lock.json(1,0): 
error: The expected lock file doesn't exist. Please run "dnu restore" 
to generate a new lock file. 

我已经尝试运行

PS C:\XXX\XXX> dnu restore 
Microsoft .NET Development Utility CoreCLR-x64-1.0.0-beta7-15532 

CACHE https://api.nuget.org/v3/index.json Restoring packages for 
C:\XXX\XXX\src\XXX\project.json CACHE 
https://api.nuget.org/v3-flatcontainer/system.threading.threadpool/index.json 
GET 
https://api.nuget.org/v3-flatcontainer/system.net.sockets/index.json 
OK 
https://api.nuget.org/v3-flatcontainer/system.net.sockets/index.json 
1117ms Writing lock file 
C:\XXX\XXX\src\XXX\project.lock.json Restore 
complete, 2071ms elapsed 

NuGet Config files used: 
    C:\Users\XXX\AppData\Roaming\NuGet\NuGet.Config 
    C:\XXX\XXX\NuGet.Config 

Feeds used: 
    https://api.nuget.org/v3-flatcontainer/ 

，成功地再现了project.lock.json，看起来（时间戳也反映了这一点）。但是，当我尝试再次运行脚手架脚本时，它一直显示上面显示的错误，包括“预期的锁定文件不存在”部分。

任何想法发生了什么问题？

Answer 1

我面临同样的问题，并修复它： - 右键单击​​ “参考” - 选择 “还原包”

或Ctrl + Shilf + R

它将创建/更新“project.lock.json”文件，其中包含应用程序正在使用的所有NuGet包的完整列表。在我看来，你不应该把它的源代码控制

Answer 2

如果您正在当前在Windows Server内核环境中执行的应用程序上运行此命令，则Core 5.0将不会经常运行。它可以读取一些，但不能创建，特别是如果您在IIS中托管。我有这个问题有很多，我觉得最好还是跳过主要依赖EntityFramework.Commands，并跳下来

"frameworks":{ 
    "dnx451":{ 
      "dependencies":{ 
       "EntityFramework.Commands":"7.0.0-beta7" 
      } 
     } 
    ,"dnxcore50"... 

也，确保当你准备运行DNX，运行

dnvm use latest -r clr -arch {your server kernel arch} x64|x86

确保您不试图调用coreclr命令。应该解决这个问题，而且对我来说在生产服务器上（因为脚手架的DbContext主要是无害的）

Answer 3

试试这个：

关闭的Visual Studio 完全。

打开Visual Studio命令提示符窗口。

cd C:\XXX\XXX\src\XXX\ 

dnu restore 

dnx ef dbcontext scaffold "ConnectionString" EntityFramework.SqlServer 

Answer 4

我有同样的问题，试图删除引用，并重新加入他们，但失败了。 我去了ManageNugetPackage管理器，并从设置中删除了私人内部nuget资源，并恢复了我的软件包，它工作正常（我也删除了旧的project.lock文件）

Answer 5

我发现如果您创建Visual Studio解决方案文件夹UNC路径会发生此错误。

通常UNC路径使用Windows时，虚拟机（例如Parallels的适用于Mac）映射您的文档文件夹，因此Visual Studio将默认为新的解决方案使用此路径。

要解决我感动的Visual Studio解决方案文件夹复制到虚拟机的磁盘驱动器的问题，然后重新打开该项目。

Answer 6

我有类似的问题，与2015年VS抱怨恢复AspNetCore引用的失败和指向做一个“DOTNET恢复”的错误形式交往之一。在最后的步骤中，dotnet恢复失败。但是，

奏效被删除使用NuGet包管理器设置本地NuGet包料参考的解决方案。