我在我的 netcoreapp3.0
Web 应用程序中使用 netstandard2.1
库.在 Startup
中添加我的服务时,我收到以下错误:
I'm using netstandard2.1
library in my netcoreapp3.0
web application. When adding my service in Startup
, I'm getting the below error:
'无法加载类型'Microsoft.AspNetCore.Mvc.MvcJsonOptions'程序集 'Microsoft.AspNetCore.Mvc.Formatters.Json, Version=3.0.0.0
'Could not load type 'Microsoft.AspNetCore.Mvc.MvcJsonOptions' from assembly 'Microsoft.AspNetCore.Mvc.Formatters.Json, Version=3.0.0.0
我还在我的类库中使用 Microsoft.AspNetCore.Mvc
2.2.0 包中的一些功能.
I'm also using some features from Microsoft.AspNetCore.Mvc
2.2.0 package in my class library.
这是我的库 .csproj
,
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.1</TargetFramework>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.2.0" />
</ItemGroup>
</Project>
这是我的库中的 ServiceExtensions
类,
Here is my ServiceExtensions
class from my library,
public static class ServiceExtensions
{
public static IMvcBuilder AddMyLibrary(this IMvcBuilder builder)
{
builder.Services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
builder.AddJsonOptions(options =>
{
options.SerializerSettings.ContractResolver = new DefaultContractResolver();
});
builder.Services.ConfigureOptions<ConfigureLibraryOptions>();
return builder;
}
}
这是我的 ConfigureLibraryOptions
类,
public class ConfigureLibraryOptions : IConfigureOptions<MvcOptions>
{
public void Configure(MvcOptions options)
{
options.ModelBinderProviders.Insert(0, new CustomBinderProvider());
}
}
这是 Startup
中的 ConfigureServices
,
services.AddControllersWithViews().AddMyLibrary();
请帮助我为什么会收到此错误并帮助解决此问题?
Please help on why I'm getting this error and assist on how to solve this?
你得到这个错误的原因是 MvcJsonOptions
在 .NET Core 3.0 中被移除了;您可以在此处阅读更多有关重大更改的信息.
The reason why you're getting the error is because MvcJsonOptions
was removed in .NET Core 3.0; you can read more about the breaking changes here.
这篇关于'无法从程序集'Microsoft.AspNetCore.Mvc.Formatters.Json 加载类型'Microsoft.AspNetCore.Mvc.MvcJsonOptions',版本= 3.0.0.0的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!