获取 Java 国家/地区列表的最佳方法

Best way to get a list of countries in Java

提问by Click Upvote

Other than Locale.getISOCountries()that is, because I'm already getting some strange errors with that. What else is the best way to get the 2-letter country codes as well as the full country name?

除此之外Locale.getISOCountries()，因为我已经遇到了一些奇怪的错误。获取 2 个字母的国家/地区代码以及完整的国家/地区名称的最佳方法是什么？

采纳答案by user85509

For a separate project, I took the country code data from the ISO site.

对于一个单独的项目，我从ISO 站点获取了国家/地区代码数据。

Beware of the following:

请注意以下事项：

• The names are in all caps. You will probably want to tweak it so it's not.
• The names are not all in simple ASCII.
• The names are not entirely political neutral (it is probably impossible for any purported list of countries to be). E.g., "Taiwan, Province of China" is a name. A good starting point to learn about the issues is this blog post.

• 名称全部大写。你可能想要调整它，所以它不是。
• 这些名称并非都是简单的 ASCII。
• 这些名字并不完全是中立的（任何所谓的国家名单都可能是不可能的）。例如，“中国台湾省”是一个名称。了解这些问题的一个很好的起点是这篇博文。

回答by KitsuneYMG

1. Create a Map out of this page http://www.theodora.com/country_digraphs.html
2. Save it to a file (I suggest XMLEncoder/XMLDecoder class)
3. Create a wrapping class that loads this Map from the file (I'd use a lazily initialized singleton) and allows access to the get(...) methods.
4. Repeat (or use a bi-directional map) these steps for each column of the table on the afore mentioned webpage.
5. Fancy-Time: Throw in some code to wrap the entries in a Reference object (SoftReference?) so that the Map won't throw MemoryErrors

1. 从此页面创建地图http://www.theodora.com/country_digraphs.html
2. 将其保存到文件中（我建议使用 XMLEncoder/XMLDecoder 类）
3. 创建一个从文件加载这个 Map 的包装类（我会使用一个延迟初始化的单例）并允许访问 get(...) 方法。
4. 对上述网页上表格的每一列重复（或使用双向映射）这些步骤。
5. Fancy-Time：放入一些代码将条目包装在 Reference 对象（SoftReference？）中，以便 Map 不会抛出 MemoryErrors

回答by mkyong

See code snippets :

查看代码片段：

String[] countryCodes = Locale.getISOCountries();

for (String countryCode : countryCodes) {

    Locale obj = new Locale("", countryCode);

    System.out.println("Country Code = " + obj.getCountry() 
        + ", Country Name = " + obj.getDisplayCountry());

}

Refer to this country list in Javafor more examples.

有关更多示例，请参阅Java 中的此国家/地区列表。

回答by Enamul Haque

You can use from json bellow like

您可以从 json bellow 中使用

1. Json parsing..

   String jsonString =JSON_DATA;
   ObjectMapper mapper = new ObjectMapper();    
   try {
           JsonNode rootNode = mapper.readTree(jsonString);              
   
           for (JsonNode node : rootNode) {
               String countrycode = node.path("code").asText();
               String dialnumber = node.path("dial_code").asText();
               String countryname = node.path("name").asText();
   
           }
   
   
   } catch (IOException e) {
       // TODO Auto-generated catch block
       e.printStackTrace();
   }
   

2. Json String here

   public static String JSON_DATA="
   
    [
      {
       "name": "Afghanistan",
       "dial_code": "+93",
       "code": "AF"
      }, 
   
     {
      "name": "Aland Islands",
     "dial_code": "+358",
     "code": "AX"
     },
   
   
   {
     "name": "Albania",
    "dial_code": "+355",
    "code": "AL"
    },
   
   {
    "name": "Algeria",
    "dial_code": "+213",
    "code": "DZ"
    },
   
   {
      "name": "AmericanSamoa",
      "dial_code": "+1684",
      "code": "AS"
     }]";
   

3. Or You can download full json from link : https://gist.github.com/Goles/3196253

1. Json解析..

   String jsonString =JSON_DATA;
   ObjectMapper mapper = new ObjectMapper();    
   try {
           JsonNode rootNode = mapper.readTree(jsonString);              
   
           for (JsonNode node : rootNode) {
               String countrycode = node.path("code").asText();
               String dialnumber = node.path("dial_code").asText();
               String countryname = node.path("name").asText();
   
           }
   
   
   } catch (IOException e) {
       // TODO Auto-generated catch block
       e.printStackTrace();
   }
   

2. Json 字符串在这里

   public static String JSON_DATA="
   
    [
      {
       "name": "Afghanistan",
       "dial_code": "+93",
       "code": "AF"
      }, 
   
     {
      "name": "Aland Islands",
     "dial_code": "+358",
     "code": "AX"
     },
   
   
   {
     "name": "Albania",
    "dial_code": "+355",
    "code": "AL"
    },
   
   {
    "name": "Algeria",
    "dial_code": "+213",
    "code": "DZ"
    },
   
   {
      "name": "AmericanSamoa",
      "dial_code": "+1684",
      "code": "AS"
     }]";
   

3. 或者您可以从链接下载完整的 json：https: //gist.github.com/Goles/3196253