在Startup ConfigureServices 註冊本地化所需要的服務AddLocalization和 Configure<RequestLocalizationOptions> public void ConfigureServices(IServiceCollection services ...
在Startup ConfigureServices
註冊本地化所需要的服務AddLocalization
和 Configure<RequestLocalizationOptions>
public void ConfigureServices(IServiceCollection services)
{
services.AddLocalization();
services.Configure<RequestLocalizationOptions>(options =>
{
var supportedCultures = new List<CultureInfo>
{
new CultureInfo("en-us"),
new CultureInfo("zh-cn")
};
options.DefaultRequestCulture = new RequestCulture(culture: "en-us", uiCulture: "en-us");
options.SupportedCultures = supportedCultures;
options.SupportedUICultures = supportedCultures;
options.RequestCultureProviders = new IRequestCultureProvider[] { new RouteDataRequestCultureProvider { IndexOfCulture = 1, IndexofUiCulture = 1 } };
});
services.Configure<RouteOptions>(options =>
{
options.ConstraintMap.Add("culture", typeof(LanguageRouteConstraint));
});
services.AddControllers();
}
在Startup.cs類的Configure
方法中添加請求本地化中間件。
var localizeOptions = app.ApplicationServices.GetService<IOptions<RequestLocalizationOptions>>();
app.UseRequestLocalization(localizeOptions.Value);
RequestCultureProvider
它使用簡單的委托來確定當前的本地化區域性,當然我們還可以通過RequestCultureProvider
自定義源的請求區域信息比如說配置文件或者資料庫都是可以的.或者說我們可以選用預設的一些方式讓我們去獲取到當前區域.
ASP.NET Core 本地化預設向我們提供了四個方式,可用於確定正在執行的請求的當前區域性:
- QueryStringRequestCultureProvider
- CookieRequestCultureProvider
- AcceptLanguageHeaderRequestCultureProvider
- CustomRequestCultureProvider
如下所示我將通過路由的方式,去確定當前區域
public class RouteDataRequestCultureProvider : RequestCultureProvider
{
public int IndexOfCulture;
public int IndexofUiCulture;
public override Task<ProviderCultureResult> DetermineProviderCultureResult(HttpContext httpContext)
{
if (httpContext == null)
throw new ArgumentNullException(nameof(httpContext));
string uiCulture;
string culture = uiCulture = httpContext.Request.Path.Value.Split('/')[IndexOfCulture];
var providerResultCulture = new ProviderCultureResult(culture, uiCulture);
return Task.FromResult(providerResultCulture);
}
}
通過如下代碼片段實現IRouteConstraint
對路由做相應的約束
public class LanguageRouteConstraint : IRouteConstraint
{
public bool Match(HttpContext httpContext, IRouter route, string routeKey, RouteValueDictionary values, RouteDirection routeDirection)
{
if (!values.ContainsKey("culture"))
return false;
var culture = values["culture"].ToString();
return culture == "en-us" || culture == "zh-cn";
}
}
添加區域資源文件
註入IStringLocalizer<T>
,StringLocalizer
將通過傳遞的共用資源(T)的值映射到資源文件,然後將本地化根據字元串的名稱從資源文件返迴響應的值
[Route("{culture:culture}/[controller]")]
[ApiController]
public class HomeController : ControllerBase
{
private readonly IStringLocalizer<Resource> localizer;
public HomeController(IStringLocalizer<Resource> localizer)
{
this.localizer = localizer;
}
public string Get()
{
return localizer["Home"];
}
}
如下圖所示
Reference
https://github.com/hueifeng/BlogSample/tree/master/src/LocalizationSingleResx