错误NU1605检测到程序包降级

本文介绍了错误NU1605检测到程序包降级的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我在 netcoreapp2.0 控制台应用程序中遇到以下NU1605依赖性错误：

I am experiencing the following NU1605 dependency errors in my netcoreapp2.0 console application:

NU1605 Detected package downgrade: System.Diagnostics.Debug from 4.3.0 to 4.0.11. Reference the package directly from the project to select a different version. MyProject -> Colorful.Console 1.2.6 -> System.IO.FileSystem 4.0.1 -> runtime.win.System.IO.FileSystem 4.3.0 -> System.Diagnostics.Debug (>= 4.3.0) MyProject -> System.Diagnostics.Debug (>= 4.0.11) NU1605 Detected package downgrade: System.Runtime.Extensions from 4.3.0 to 4.1.0. Reference the package directly from the project to select a different version. MyProject -> Colorful.Console 1.2.6 -> System.IO.FileSystem 4.0.1 -> runtime.win.System.IO.FileSystem 4.3.0 -> System.Runtime.Extensions (>= 4.3.0) MyProject -> Colorful.Console 1.2.6 -> System.Runtime.Extensions (>= 4.1.0) MyProject NU1605 Detected package downgrade: System.Runtime.Handles from 4.3.0 to 4.0.1. Reference the package directly from the project to select a different version. MyProject -> Colorful.Console 1.2.6 -> System.IO.FileSystem 4.0.1 -> runtime.win.System.IO.FileSystem 4.3.0 -> System.Runtime.Handles (>= 4.3.0) MyProject -> Colorful.Console 1.2.6 -> System.IO.FileSystem 4.0.1 -> System.Runtime.Handles (>= 4.0.1) NU1605 Detected package downgrade: System.Runtime.InteropServices from 4.3.0 to 4.1.0. Reference the package directly from the project to select a different version. MyProject -> Colorful.Console 1.2.6 -> System.Console 4.0.0 -> runtime.win.System.Console 4.3.0 -> System.Runtime.InteropServices (>= 4.3.0) MyProject -> Colorful.Console 1.2.6 -> System.Runtime.InteropServices (>= 4.1.0)

我尝试在以下版本中引用这些软件包版本csproj，但这不能解决问题。请参阅csproj：

I have tried referencing these package versions in csproj, but this doesn't fix the problem. See csproj:

<Project Sdk="Microsoft.NET.Sdk"> <PropertyGroup> <OutputType>Exe</OutputType> <TargetFramework>netcoreapp2.0</TargetFramework> <RuntimeIdentifier>win10-x64</RuntimeIdentifier> </PropertyGroup> <ItemGroup> <PackageReference Include="Colorful.Console" Version="1.2.6" /> <PackageReference Include="CommandLineParser" Version="2.2.1" /> <PackageReference Include="DotSpinners" Version="1.2.0" /> <PackageReference Include="System.Diagnostics.Debug" Version="4.0.11" /> <PackageReference Include="System.Runtime.Extensions" Version="4.1.0" /> <PackageReference Include="System.Runtime.Handles" Version="4.0.1" /> <PackageReference Include="System.Runtime.InteropServices" Version="4.1.0" /> </ItemGroup> </Project>

它们似乎确实可以恢复正常：

And they do seem to restore fine:

该项目还引用了 Microsoft.NETCore.App 2.0 SDK。

The project is also referencing the Microsoft.NETCore.App 2.0 SDK.

从CLI执行dotnet还原时，我还会收到以下错误，但我不确定是否与之相关：

When performing dotnet restore from the CLI, I also get the following error, which I am not sure is related:

C:\Program Files\dotnet\sdk\2.1.200\NuGet.targets(114,5): error : Failed to retrieve information about 'System.Runtime.Serialization.Formatters' from remote source 'mycompany.pkgs.visualstudio/_packaging/myid/nuget/v3/flat2/system.runtime.serialization.formatters/index.json'. [C:\MyProject\MyProject.sln] C:\Program Files\dotnet\sdk\2.1.200\NuGet.targets(114,5): error : Response status code does not indicate success: 401 (Unauthorized). [C:\MyProject\MyProject.sln]

我不知道为什么要尝试检索我们的私人公司软件包存储库中有关 System.Runtime.Serialization.Formatters的信息。

I have no idea why it's trying to retrieve information about 'System.Runtime.Serialization.Formatters' from our private company package repository.

NuGet.config：

<?xml version="1.0" encoding="utf-8"?> <configuration> <packageSources> <add key="nuget" value="api.nuget/v3/index.json" protocolVersion="3" /> <add key="mycompany" value="mycompany.pkgs.visualstudio/_packaging/Stable/nuget/v3/index.json" /> </packageSources> <packageSourceCredentials> <mycompany> <add key="Username" value="vsts" /> <add key="ClearTextPassword" value="xxx" /> </mycompany> </packageSourceCredentials> <disabledPackageSources> <add key="Microsoft and .NET" value="true" /> </disabledPackageSources> <packageRestore> <add key="enabled" value="True" /> <add key="automatic" value="True" /> </packageRestore> <bindingRedirects> <add key="skip" value="False" /> </bindingRedirects> <packageManagement> <add key="format" value="0" /> <add key="disabled" value="False" /> </packageManagement> </configuration>

如果这有任何含义，我还会收到以下NU1603警告：

I also have the following NU1603 warning if this means anything:

NU1603 MyProject depends on System.Runtime.Handles (>= 4.1.0) but System.Runtime.Handles 4.1.0 was not found. An approximate best match of System.Runtime.Handles 4.3.0 was resolved.

推荐答案

错误NU1605检测到程序包降级

Error NU1605 Detected package downgrade

对于错误 NU1605 ：

您可以使用< NoWarn> NU1605< / NoWarn> 清除项目中的 WarningsAsErrors 。

You can use <NoWarn>NU1605</NoWarn> to clear the WarningsAsErrors in your project.

那是因为 netcoreapp2.0 项目具有< WarningsAsErrors> NU1605< / WarningsAsErrors> 默认情况下。从属性->构建->将警告作为错误进行检查：

That because netcoreapp2.0 projects have <WarningsAsErrors>NU1605</WarningsAsErrors> by default. Check it from Properties->Build->Treat warning as errors:

添加如下内容：

<PackageReference Include="Colorful.Console" Version="1.2.6"> <NoWarn>NU1605</NoWarn> </PackageReference>

在此处查看博客文章： MSBuild集成NuGet警告和错误和意外的软件包版本警告。

Check the blog post here: MSBuild integration of NuGet warnings and errors and Unexpected package version warnings.

对于错误 NU1603 ：

发生警告是因为Feed中不存在 System.Runtime.Handles （> = 4.1.0 ）。通常，这是软件包创作错误，因为软件包依赖于不存在的东西。

The warning occurs because System.Runtime.Handles (>= 4.1.0) does not exist in the feed. Typically this is a package authoring error because the package depends on something that doesn't exist.

您还可以使用< NoWarn> NU1603< / NoWarn> 解决此问题：

You can also use <NoWarn>NU1603</NoWarn> to resolve this issue:

<PropertyGroup> <NoWarn>NU1603</NoWarn> </PropertyGroup>

注意：您会注意到您的项目还有另一个警告，请注意PackageReference上的黄色三角形标志 DotSpinners 参考。那是因为软件包 DotSpinners 是一个.NET Framework项目，与您的.NET Core项目不兼容。

Note:You would notice that your project has another warning, notice the yellow triangle insignia on the PackageReference DotSpinners on Reference. That because the package DotSpinners is a .NET Framework project, not compatible with your .NET Core project.

希望这会有所帮助。