• ASP.NET Core WebAPI实现本地化(单资源文件)


    在Startup ConfigureServices 注册本地化所需要的服务AddLocalizationConfigure<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类的Configure 方法中添加请求本地化中间件。

        var localizeOptions = app.ApplicationServices.GetService<IOptions<RequestLocalizationOptions>>();
                app.UseRequestLocalization(localizeOptions.Value);
    
    

    RequestCultureProvider 它使用简单的委托来确定当前的本地化区域性,当然我们还可以通过RequestCultureProvider自定义源的请求区域信息比如说配置文件或者数据库都是可以的.或者说我们可以选用默认的一些方式让我们去获取到当前区域.

    ASP.NET Core 本地化默认向我们提供了四个方式,可用于确定正在执行的请求的当前区域性:

    • QueryStringRequestCultureProvider
    • CookieRequestCultureProvider
    • AcceptLanguageHeaderRequestCultureProvider
    • CustomRequestCultureProvider

    如下所示我将通过路由的方式,去确定当前区域

       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);
            }
        }
    

    通过如下代码片段实现IRouteConstraint对路由做相应的约束

        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";
            }
        }
    

    添加区域资源文件

    注入IStringLocalizer<T>StringLocalizer将通过传递的共享资源(T)的值映射到资源文件,然后将本地化根据字符串的名称从资源文件返回响应的值

        [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"];
            }
        }
    

    如下图所示

    Reference

    https://github.com/hueifeng/BlogSample/tree/master/src/LocalizationSingleResx

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  • 原文地址:https://www.cnblogs.com/yyfh/p/12995208.html
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