這兩天把一個 asp.net core 1.1 的項目遷移到了 asp.net core 2.0 preview 2 ,在這篇隨筆中記錄一下。
如果項目在有 global.json 文件,需要刪除或修改為 .net 2.0 preview 2 的 sdk 版本號。
對于類庫項目的 .csproj,需要把 TagetFramework 改為 netstandard2.0 ,比如
<PropertyGroup> <TargetFramework>netstandard1.6</TargetFramework> <AssemblyName>CNBlogs.Identity.ServiceAgent</AssemblyName> <PackageId>CNBlogs.Identity.ServiceAgent</PackageId> <NetStandardImplicitPackageVersion>1.6.1</NetStandardImplicitPackageVersion> <GenerateAssemblyConfigurationAttribute>false</GenerateAssemblyConfigurationAttribute> <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute> <GenerateAssemblyProductAttribute>false</GenerateAssemblyProductAttribute> </PropertyGroup>
改為
<PropertyGroup> <TargetFramework>netstandard2.0</TargetFramework> </PropertyGroup>
對于單元測試項目,TargetFramework 需要改為 netcoreapp2.0 ,比如
<PropertyGroup> <TargetFramework>netcoreapp1.1</TargetFramework> <AssemblyName>CNBlogs.Identity.UnitTests</AssemblyName> <PackageId>CNBlogs.Identity.UnitTests</PackageId> <GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles> <RuntimeFrameworkVersion>1.1.1</RuntimeFrameworkVersion> <GenerateAssemblyConfigurationAttribute>false</GenerateAssemblyConfigurationAttribute> <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute> <GenerateAssemblyProductAttribute>false</GenerateAssemblyProductAttribute> </PropertyGroup>
改為
<PropertyGroup> <TargetFramework>netcoreapp2.0</TargetFramework> </PropertyGroup>
對于 web 項目,需要該動的地方很多。除了把 TargetFramework 改為 netcoreapp2.0 ,比如
<PropertyGroup> <TargetFramework>netcoreapp1.1</TargetFramework> <PreserveCompilationContext>true</PreserveCompilationContext> <AssemblyName>CNBlogs.Identity.Web</AssemblyName> <OutputType>Exe</OutputType> <PackageId>CNBlogs.Identity.Web</PackageId> <RuntimeIdentifiers>win10-x64;win8-x64;osx.10.12-x64;ubuntu.14.04-x64</RuntimeIdentifiers> <PackageTargetFallback>$(PackageTargetFallback);dnxcore50;portable-net45+win10</PackageTargetFallback> <RuntimeFrameworkVersion>1.1.1</RuntimeFrameworkVersion> </PropertyGroup>
改為
<PropertyGroup> <TargetFramework>netcoreapp2.0</TargetFramework> </PropertyGroup>
還需要:
1)移除所有對 Microsoft.AspNetCore 的引用
<PackageReference Include="Microsoft.AspNetCore.Authentication" Version="1.1.2" /> <PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="1.1.2" /> <PackageReference Include="Microsoft.AspNetCore.DataProtection.Extensions" Version="1.1.2" /> <PackageReference Include="Microsoft.AspNetCore.DataProtection.Redis" Version="0.1.2" /> <PackageReference Include="Microsoft.AspNetCore.Diagnostics" Version="1.1.2" /> <PackageReference Include="Microsoft.AspNetCore.Hosting" Version="1.1.2" /> <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.3" /> <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.ViewCompilation" Version="1.1.1" /> <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="1.1.2" /> <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="1.1.2" /> <PackageReference Include="Microsoft.AspNetCore.Session" Version="1.1.2" /> <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.2" />
添加 Microsoft.AspNetCore 的引用
<PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.0-preview2-final" />
2)修改 Authentication 相關的代碼
- CookieAuthenticationOptions 的命名空間改為 Microsoft.AspNetCore.Authentication.Cookies
- HttpContext.Authentication.SignInAsync() 改為 HttpContext.SignInAsync() ,需要安裝 NuGet 包 Microsoft.AspNetCore.Authentication.Abstractions ,引用命名空間 Microsoft.AspNetCore.Authentication 。
- cookieAuthOptions.Value.AuthenticationScheme 改為 CookieAuthenticationDefaults.AuthenticationScheme
3) 針對 BundlerMinifier 的修改
在 asp.net core 2.0 preview 2 的 docker 容器中 build 項目,在執行 dotnet bundle 時出現下面的錯誤
It was not possible to find any compatible framework version The specified framework 'Microsoft.NETCore.App', version '1.1.0' was not found. - Check application dependencies and target a framework version installed at: / - Alternatively, install the framework version '1.1.0'.
這是由于 nuget 包 BundlerMinifier.Core 不支持 .net core 2.0 。github 上簽出 BundlerMinifier 的源碼(已增加了對.net core 2.0的支持),自己打包。
升級時不僅要升級 PackageReference 中的 BundlerMinifier.Core ,還要升級 DotNetCliToolReference 中的 BundlerMinifier.Core 。
4)針對 DataProtection 的修改
Microsoft.AspNetCore.DataProtection.Redis 的 PersistKeysToRedis() 方法不起作用,需要改用臨時解決方法:
services.Configure<KeyManagementOptions>(o => { o.XmlRepository = new RedisXmlRepository(() => redisConn.GetDatabase(), "DataProtection-Keys-Cnblogs"); });
詳見 PersistKeysToRedis not working in .NET Core 2.0 Preview 2 with Redis 0.1.2
5)Startup 的修改
- 去除構造函數中下面的代碼
var builder = new ConfigurationBuilder() .SetBasePath(env.ContentRootPath) .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true) .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true); builder.AddEnvironmentVariables(); Configuration = builder.Build();
- 去除 Configure 方法中下面的代碼
loggerFactory.AddSerilog(); loggerFactory.AddConsole(Configuration.GetSection("Logging"));
- IConfigurationRoot 改為 IConfiguration
public Startup(IConfiguration configuration) { Configuration = configuration; } public IConfiguration Configuration { get; set; }
6)Program 的修改
public class Program { public static void Main(string[] args) { BuildWebHost(args).Run(); } public static IWebHost BuildWebHost(string[] args) { return WebHost.CreateDefaultBuilder(args) .ConfigureLogging((context, logging) => { logging.AddSerilog(); }) .UseStartup<Startup>() .Build(); } }
完成 web 項目升級后,升級所有 NuGet 包,刪除所有 AssemblyInfo.cs 文件,整個升級就完成了。
【更新】
2017年8月15日,微軟發布了 .NET Core 2.0 正式版,詳見 .NET Core 2.0 正式發布信息匯總 。
升級注意:
1)不再需要上面針對 PersistKeysToRedis() 的臨時解決方法
2)針對 Authentication 的修改
由
services.AddCookieAuthentication(options => { options.CookieHttpOnly = true; options.CookieName = "xxx"; options.CookieDomain = "xxx"; options.LoginPath = "/account/signin"; options.LogoutPath = "/account/signout"; });
改為
services.AddAuthentication(options => { options.DefaultAuthenticateScheme = CookieAuthenticationDefaults.AuthenticationScheme; options.DefaultChallengeScheme = CookieAuthenticationDefaults.AuthenticationScheme; }) .AddCookie(options => { options.Cookie.HttpOnly = true; options.Cookie.Name = "xxx"; options.Cookie.Domain = "xxx"; options.LoginPath = "/account/signin"; options.LogoutPath = "/account/signout"; });
3)視圖 .cshtml 中的變量名不能使用 page 。
文章列表