实现全球化：深入理解国际化框架的构建

public class InternationalizationExample {

    public static void main(String[] args) {
        System.out.println(getWelcomeMessage(getUserLocale()));
    }

    public static String getWelcomeMessage(String locale) {
        switch (locale) {
            case "en_US":
                return "Hello, World!";
            case "fr_FR":
                return "Bonjour le Monde!";
            case "es_ES":
                return "Hola Mundo!";
            default:
                return "Hello, World!";
        }
    }

    public static String getUserLocale() {
        // This is a placeholder method. In a real-world scenario,
        // you'd fetch the user's locale from their settings or system configuration.
        return "en_US";  // This is just an example.
    }
}

{
    "welcome_message": "Hello, World"
}

{
    "welcome_message": "Hola, Mundo"
}

import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.File;
import java.io.IOException;
import java.util.Map;

public class Internationalization {

    private static final String CONFIG_PATH = "/path_to_configs/";
    private Map<String, String> translations;

    public Internationalization(String locale) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        translations = mapper.readValue(new File(CONFIG_PATH + locale + ".json"), Map.class);
    }

    public String getTranslation(String key) {
        return translations.getOrDefault(key, "Key not found!");
    }
}

public static class Program {

    public static void main(String[] args) throws IOException {
        Internationalization i18n = new Internationalization(getUserLocale());
        System.out.println(i18n.getTranslation("welcome_message"));
    }

    private static String getUserLocale() {
        // This method should be implemented to fetch the user's locale.
        // For now, let's just return "en" for simplicity.
        return "en";
    }
}

import java.util.Map;
import org.json.JSONObject;

public class InternationalizationService {

    private static final String CDN_BASE_URL = "https://cdn.example.com/locales/";

    public String getTranslatedString(String key) {
        String locale = getUserLocale();
        String configContent = fetchConfigFromCDN(locale);
        JSONObject configJson = new JSONObject(configContent);
        return configJson.optString(key, "Translation not found");
    }

    private String fetchConfigFromCDN(String locale) {
        String url = CDN_BASE_URL + locale + ".json";
        return HttpUtil.get(url);  // Assuming this method fetches content from a given URL
    }

    private String getUserLocale() {
        // Implement method to get the user's locale
        // This can be fetched from user preferences, system settings, etc.
        return "en";  // Defaulting to English for this example
    }
}

{
      oneUserAction: {0} {1} your post,
      twoUserAction: {0} and {1} {2} your post,
      multiUserAction: {0}, {1} and {2} other {3} recently {4} to your post,
      people: people,
      likeSingular: likes,
      likePlural: like,
}

{
      oneUserAction: {0} {1} votre publication,
      twoUserAction: {0} et {1} {2} votre publication,
      multiUserAction: {0}, {1} et {2} autres {3} ont récemment {4} à votre publication,
      people: personnes,
      likeSingular: aime,
      likePlural: aiment,
}

import java.util.Locale;
import java.util.ResourceBundle;

public class InternationalizationExample {

    public static void main(String[] args) {
        // Examples
        System.out.println(createMessage("David", null, 1, new Locale("en", "US"))); // One user
        System.out.println(createMessage("David", "John", 2, new Locale("en", "US"))); // Two users
        System.out.println(createMessage("David", "John", 100, new Locale("en", "US"))); // Multiple users

        // French examples
        System.out.println(createMessage("David", null, 1, new Locale("fr", "FR"))); // One user
        System.out.println(createMessage("David", "John", 2, new Locale("fr", "FR"))); // Two users
        System.out.println(createMessage("David", "John", 100, new Locale("fr", "FR"))); // Multiple users
    }

    private static String createMessage(String user1, String user2, int count, Locale locale) {
        // Load the appropriate resource bundle
        ResourceBundle messages = ResourceBundle.getBundle("MessagesBundle", locale);    

        if (count == 0) {
            return ""; // No likes received
        } else if (count == 1) {
            return String.format(
                  messages.getString("oneUserAction"),
                  user1,
                  messages.getString("likeSingular")
            ); // For one like, returns "David likes your post"
        } else if (count == 2) {
            return String.format(
                  messages.getString("twoUserAction"),
                  user1,
                  user2,
                  messages.getString("likePlural")
            ); // For two likes, returns "David and John like your post"
        } else {
            return String.format(
                  messages.getString("multiUserAction"),
                  user1,
                  user2,
                  count,
                  messages.getString("people"),
                  messages.getString("likePlural")
                  ); // For more than two likes, returns "David, John and 100 other people like your post"
        }
    }
}