Asp.Net Core MVC项目实现多语言（Globalization/Localization）

正好最近手上在给一个Razor MVC项目实现一个多语言功能，叫Globalization也好，Localization也好，whatever。最终要实现的效果呢，就是一键切换全站语言，并且开发的时候只需要写一套页面。

下面进入正题

首先，我们要创建一个CultureConfigurer类，用于管理本地化资源，完成“翻译”环节：

这里我用了静态类，然后在MVC项目StartUp的时候执行Init()方法，其实有点蠢，当然你们也可以先写一个接口然后用依赖注入成单例。

 1 using System.Collections.Generic;
 2 using System.IO;
 3 using System.Reflection;
 4 using Newtonsoft.Json;
 5 
 6 namespace Localization
 7 {
 8     public enum Culture
 9     {
10         Cn,
11         En
12     }
13 
14     public static class CultureConfigurer
15     {
16         private static Dictionary<string, string> _enDictionary;
17         private static Dictionary<string, string> _cnDictionary;
18 
19         public static void Init()
20         {
21             var assembly = Assembly.Load(new AssemblyName("Localization"));
22 
23             var resourceNames = assembly.GetManifestResourceNames();
24             foreach (var resourceName in resourceNames)
25             {
26                 if (resourceName.EndsWith("en-US.json") || resourceName.EndsWith("zh-CN.json"))
27                 {
28                     using (var stream = assembly.GetManifestResourceStream(resourceName))
29                     {
30                         if (stream != null)
31                         {
32                             using (StreamReader reader = new StreamReader(stream))
33                             {
34                                 var content = reader.ReadToEnd();
35                                 Dictionary<string, string> localizationDictionary =
36                                     JsonConvert.DeserializeObject<Dictionary<string, string>>(content);
37                                 if (resourceName.EndsWith("en-US.json"))
38                                 {
39                                     _enDictionary = localizationDictionary;
40                                 }
41                                 else
42                                 {
43                                     _cnDictionary = localizationDictionary;
44                                 }
45                             }
46                         }
47                     }
48                 }
49             }
50         }
51 
52         public static string GetValue(string key, Culture culture)
53         {
54             switch (culture)
55             {
56                 case (Culture.Cn):
57                     {
58                         if (_cnDictionary.ContainsKey(key))
59                         {
60                             return _cnDictionary[key];
61                         }
62                         else
63                         {
64                             return $"[{key}]";
65                         }
66                     }
67                 case (Culture.En):
68                     {
69                         if (_enDictionary.ContainsKey(key))
70                         {
71                             return _enDictionary[key];
72                         }
73                         else
74                         {
75                             return $"[{key}]";
76                         }
77                     }
78                 default:
79                     {
80                         return $"[{key}]";
81                     }
82             }
83         }
84     }
85 }

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