otNet Core 2.0 推出來也有兩,三個月的時間了。如今團隊的項目是DotNet Core 1.0版本的,因爲2.0並無向下兼容1.0,因此須要本身手動升級。html
首先查看當前的dotnet core的版本,能夠經過命令行查看,git
$ dotnet -v
也能夠經過控制面板的「添加刪除程序」查看,這裏包含Runtime和SDK兩個安裝包。在升級到dotnet core 2.0以前,能夠選擇要不要刪除以前安裝的老版本的Runtime和SDK,若是不刪除的話,系統默認會使用最新的版本。咱們這邊選擇刪除之前老的Runtime和SDKgithub
刪除完老版本的Dotnet Core後,咱們須要去官網下載最新的2.0版本, 並進行安裝。json
假設以前的1.0項目名字叫作「DemoVersion1」,dotnet core 2.0 提供了很好的CLI命令行,能夠幫助咱們作遷移,這裏要使用的命令行叫windows
$ dotnet migrate $ dotnet migrate project.json Summary Total Projects: 1 Succeeded Projects: 1 Failed Projects: 0 The project migration has finished. Please visit https://aka.ms/coremigration to report any issues you've encountered or ask for help. Project `Acn.School.csproj` added to the solution. Project reference `Acn.School.xproj` removed. Files backed up to C:\git\DemoVersion1\backup\
在dotnet core的自動遷移以後,咱們會發現app
咱們主要關係csproj文件,咱們會發現TargetFramework仍是"netcoreapp1.0", dotnet core包引用的仍是"1.0.3"版本,這裏須要作一下版本的修改。ide
<Project Sdk="Microsoft.NET.Sdk.Web"> <PropertyGroup> <TargetFramework>netcoreapp1.0</TargetFramework> <PreserveCompilationContext>true</PreserveCompilationContext> <AssemblyName>Acn.School</AssemblyName> <OutputType>Exe</OutputType> <PackageId>Acn.School</PackageId> <RuntimeFrameworkVersion>1.0.4</RuntimeFrameworkVersion> <PackageTargetFallback>$(PackageTargetFallback);dotnet5.6;portable-net45+win8</PackageTargetFallback> </PropertyGroup> <ItemGroup> <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.0.3" /> <PackageReference Include="Microsoft.AspNetCore.Routing" Version="1.0.3" /> <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="1.0.2" /> <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="1.0.3" /> <PrivateAssets>All</PrivateAssets> </PackageReference> <PackageReference Include="MailKit" Version="1.16.1" /> <PackageReference Include="HtmlAgilityPack" Version="1.5.0-beta9" /> <PackageReference Include="Microsoft.Extensions.Caching.Redis.Core" Version="1.0.3" /> </ItemGroup> <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp1.0' "> <PackageReference Include="System.ServiceModel.Duplex" Version="4.0.1" /> <PackageReference Include="System.ServiceModel.Http" Version="4.1.0" /> <PackageReference Include="System.ServiceModel.NetTcp" Version="4.1.0" /> <PackageReference Include="System.ServiceModel.Security" Version="4.0.1" /> <PackageReference Include="System.Xml.XmlSerializer" Version="4.0.11" /> </ItemGroup> </Project>
把ui
<TargetFramework>netcoreapp1.0</TargetFramework>
換成spa
<TargetFramework>netcoreapp2.0</TargetFramework>
將下面兩行刪除命令行
<RuntimeFrameworkVersion>1.0.4</RuntimeFrameworkVersion> <PackageTargetFallback>$(PackageTargetFallback);dotnet5.6;portable-net45+win8</PackageTargetFallback>
將全部的AspNetCore和EF的版本,所有換成2.0.0
<ItemGroup> <PackageReference Include="Microsoft.AspNetCore" Version="2.0.0" /> <PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="2.0.0" /> <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="2.0.0" /> <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="2.0.0" /> <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.0.0" /> <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.ViewCompilation" Version="2.0.0" PrivateAssets="All" /> <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="2.0.0" /> <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="2.0.0" PrivateAssets="All" /> <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="2.0.0" /> <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.0.0" PrivateAssets="All" /> <PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="2.0.0" /> <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.0.0" PrivateAssets="All" /> </ItemGroup>
這個時候若是運行項目,會發現不少的依賴包找不到,咱們須要先運行一下
$ dotnet restore
若是以前有使用StyleCop.Analyzers作代碼的分析檢查,那麼須要
將project.json文件中的
"buildOptions": { "emitEntryPoint": true, "preserveCompilationContext": true, "define": [], "additionalArguments": [ "/ruleset:RuleSet.ruleset" ] },
修改成,RuleSet.ruleset是本身定製的ruleset文件
<CodeAnalysisRuleSet>RuleSet.ruleset</CodeAnalysisRuleSet>
若是項目中有引用WCF service的話,那麼須要在VS 2017裏面安裝一個拓展:
Microsoft WCF Web Service Reference Provider
官網地址是:https://marketplace.visualstudio.com/items?itemName=WCFCORETEAM.VisualStudioWCFConnectedService
已經開始支持dotnet core 2.0了,可是目前仍是有些版本兼容的問題,感興趣的同窗能夠關注下這個issue:https://github.com/dotnet/wcf/issues/2340
一個work around的方法是,在Visual Stduio Installer中安裝「.NET Core 1.0-1.1 development tools」
最後,若是項目中有用到Microsoft.AspNetCore.Authorization中的JWT,那麼代碼須要稍微修改一下,能夠參考這篇文章。