Asp.net核心本地化与json文件

Question

我正在努力寻找一个关于asp.net本地化的好教程.在官方文档中,解释是关于.resx文件,我想使用json文件.

如果有人有一个很好的教程,如何编写中间件来做到这一点.

谢谢

Answer 1

Nuget包

https://www.nuget.org/packages/Askmethat.Aspnet.JsonLocalizer/

解

经过一番调查,我终于在Asp/Localization GitHub中找到了一个例子.

我在这里为没有打破默认文化提供者的人们提供不想使用平面json的人.

数据:

扁平的json:

[
  {
    "Key": "Hello",
    "LocalizedValue" : {
      "fr-FR": "Bonjour",
      "en-US": "Hello"
    }
  }
]

C#模型:

class JsonLocalization
    {
        public string Key { get; set; }
        public Dictionary<string, string> LocalizedValue = new Dictionary<string, string>();

    }

中间件

工厂

这只是为了访问CultureInfo是StringLocalizer.

 public class JsonStringLocalizerFactory : IStringLocalizerFactory
    {
        public IStringLocalizer Create(Type resourceSource)
        {
            return new JsonStringLocalizer();
        }

        public IStringLocalizer Create(string baseName, string location)
        {
            return new JsonStringLocalizer();
        }
    }

Localizer

从JSON文件获取数据的逻辑

public class JsonStringLocalizer : IStringLocalizer
{
    List<JsonLocalization> localization = new List<JsonLocalization>();
    public JsonStringLocalizer()
    {
        //read all json file
        JsonSerializer serializer = new JsonSerializer();
        localization = JsonConvert.DeserializeObject<List<JsonLocalization>>(File.ReadAllText(@"localization.json"));

    }


    public LocalizedString this[string name]
    {
        get
        {
            var value = GetString(name);
            return new LocalizedString(name, value ?? name, resourceNotFound: value == null);
        }
    }

    public LocalizedString this[string name, params object[] arguments]
    {
        get
        {
            var format = GetString(name);
            var value = string.Format(format ?? name, arguments);
            return new LocalizedString(name, value, resourceNotFound: format == null);
        }
    }

    public IEnumerable<LocalizedString> GetAllStrings(bool includeParentCultures)
    {
        return localization.Where(l => l.LocalizedValue.Keys.Any(lv => lv == CultureInfo.CurrentCulture.Name)).Select(l => new LocalizedString(l.Key, l.LocalizedValue[CultureInfo.CurrentCulture.Name], true));
    }

    public IStringLocalizer WithCulture(CultureInfo culture)
    {
        return new JsonStringLocalizer();
    }

    private string GetString(string name)
    {
        var query = localization.Where(l => l.LocalizedValue.Keys.Any(lv => lv == CultureInfo.CurrentCulture.Name));
        var value = query.FirstOrDefault(l => l.Key == name);
        return value.LocalizedValue[CultureInfo.CurrentCulture.Name];
    }
}

使用此解决方案,您可以在视图和控制器中使用基本的IStringLocalizer.

当然,如果你有一个大的json文件,你可以使用IMemoryCache或IDistributedMemoryCache来提高性能.

编辑:

在应用程序启动中添加以下行以使用您自己的实现:

services.AddSingleton<IStringLocalizerFactory, JsonStringLocalizerFactory>();
services.AddSingleton<IStringLocalizer, JsonStringLocalizer>();
services.AddLocalization(options => options.ResourcesPath = "Resources");

之后,您可以根据需要配置全球化首选项.