ASP.NET Core 1.1 本地化通用服务 [英] ASP.NET Core 1.1 Localization Generic Service

问题描述

我正在制作一个 ASP.NET Core 1.1 应用程序并尝试设置本地化.

I'm making a ASP.NET Core 1.1 app and trying to setup localization.

当我在我的 ValuesController 上实现 IStringLocalizer 时，它可以正常工作并本地化我的资源文件.

When I make on my ValuesController the implementation of IStringLocalizer it works fine and localize my resource file.

public ValuesController(IStringLocalizer<ValuesController> localizer, IService<BaseEntity> service)
{
    _localizer = localizer;
    _service = service;
}

上面的代码将我的资源定位在Resources/Controllers/ValuesController.en-US.resx".

The code above locate my resources at "Resources/Controllers/ValuesController.en-US.resx".

但是，当我尝试使用通用服务注入 IStringLocalizer 时，它找不到我的资源文件.

But, when I try to inject the IStringLocalizer with a generic service it can't find my resource file.

public class Service<T> : IService<T>
    where T : BaseEntity
{
    #region Properties
    protected IRepository Repository { get; set; }
    protected IUnitOfWorkFactory UnitOfWorkFactory { get; set; }
    private readonly ILogger _logger;
    private readonly IStringLocalizer _localizer;

    #endregion

    #region Ctor
    public Service(IRepository repository, IUnitOfWorkFactory unitOfWorkFactory,
        ILogger<Service<T>> logger, IStringLocalizer<Service<T>> localizer)
    {
        Repository = repository;
        UnitOfWorkFactory = unitOfWorkFactory;
        _logger = logger;
        _localizer = localizer;
    }
}

上面的代码没有在Resources/Services/Base/Service.en-US.resx"中找到我的资源

The code above doesn't locate my resource at "Resources/Services/Base/Service.en-US.resx"

知道怎么做吗?

--- 编辑

MyControl.Api (Startup.cs)

MyControl.Api (Startup.cs)

命名空间 MyControl.Api

namespace MyControl.Api

services.AddLocalization(options => options.ResourcesPath = "Resources");

这一行在MyControl.Api"中，在命名空间MyControl.Api"中.

This line is inside "MyControl.Api", with is in the namespace "MyControl.Api".

此应用程序中的资源文件夹适用于资源/控制器"

The resources folder in this aplication work for "Resources/Controllers"

我的服务在命名空间MyControl.Services"中

My services are in namespace "MyControl.Services"

这个项目中的资源文件夹(同一个解决方案中的两个项目)是

The resources folder in this Project (two projects inside same solution) are

资源/服务/基础"

我的服务文件的命名空间是MyControl.Services.Services.Base"

The namespace of my service file is "MyControl.Services.Services.Base"

推荐答案

说明

你说得对，问题出在泛型类中.根据 ResourceManagerStringLocalizer 的源代码(它是默认的 IStringLocalizer 实现) - 该类包含 _resourceBaseName 私有字段.同样的字符串也使用 定位资源文件作为ResourceManager 类中的搜索路径参数.

You're right, the problem is in generic class. Accordingly to the source code of ResourceManagerStringLocalizer (it's default IStringLocalizer implementation) - that class contains _resourceBaseName private field. The same string also is used to locate resource files as a search path parameter in ResourceManager class.

当 IStringLocalizer 被注入到一个封闭的泛型类型实例中时，这个字段被错误地设置为:

When IStringLocalizer is injected into a closed generic type instance, this field is set incorrectly with something like:

FooProject.Resources.Services.FooService`1[[System.Double, System.Private.CoreLib...

FooProject.Resources.Services.FooService`1[[System.Double, System.Private.CoreLib...

而不是正确的:

FooProject.Resources.Services.FooService

FooProject.Resources.Services.FooService

您可以在调试器中检查 localizer _resourceBaseName 值.这可能是一个错误，你会在 GitHub 上打开一个关于它的问题:https://github.com/aspnet/本地化/问题.

You can check the localizer _resourceBaseName value in debugger. It's probably a bug and you would open an issue about it on GitHub: https://github.com/aspnet/Localization/issues.

解决方法

可以手动创建 ResourceManagerStringLocalizer 实例.我们应该从没有 csproj 文件名和没有类名本身的类全名中取出这个 baseName 部分:

It is possible to create a ResourceManagerStringLocalizer instance manually. We should take this baseName part from a class full name without a csproj-file name and without a class name itself:

全班名:

MyCsprojFileName.AnyFolder.SubFolder.FooClass

MyCsprojFileName.AnyFolder.SubFolder.FooClass

baseName:

AnyFolder.SubFolder

AnyFolder.SubFolder

对于您提供的代码 baseName 可能是 "Services.Base".让我们编写一些代码以通用方式获取它:

For the code you provided baseName is probably "Services.Base". Let's write some code to get it in generic way:

public class FooService<T>
{
    private readonly IStringLocalizerFactory _factory;

    public FooService(IStringLocalizerFactory factory)
    {
        _factory = factory;
    }

    public IStringLocalizer GetLocalizer()
    {
        var type = typeof(FooService<>);

        string assemblyName = type.GetTypeInfo().Assembly.GetName().Name;
        string typeName = type.Name.Remove(type.Name.IndexOf('`'));
        string baseName = (type.Namespace + "." + typeName).Substring(assemblyName.Length).Trim('.');

        var localizer = _factory.Create(baseName, assemblyName);

        return localizer;
    }
}

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