【java】读取资源文件key->value，java.util.ResourceBundle

package 国际化;

import java.util.ResourceBundle;

public class TestResource {
    public static void main(String[] args) {
        ResourceBundle rb=ResourceBundle.getBundle("TestResource");
        System.out.println(rb.getString("name"));
    }
}

前提：需要在project的src目录下建立TestResource.properties文件，并输入内容key-value

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package 国际化;

import java.text.MessageFormat;
import java.util.ResourceBundle;

public class TestResource {
    public static void main(String[] args) {
        ResourceBundle rb=ResourceBundle.getBundle("TestResource");
        String str=rb.getString("info");//含有占位符{0}、{1}
        System.out.println(MessageFormat.format(str, "中国","北京"));
        //运行结果：country:中国,城市：北京
    }
}

  

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 System.out.println(Locale.getDefault());//zh_CN 取得当前语言环境

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package 国际化;

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

public class TestResource {
    public static void main(String[] args) {
        Locale locale=new Locale("zh","CN");
        ResourceBundle rb=ResourceBundle.getBundle("TestResource", locale);
        String str=rb.getString("info");
        System.out.println(str);
        
        Locale locale2=new Locale("en","US");
        ResourceBundle rb2=ResourceBundle.getBundle("TestResource", locale2);
        String str2=rb2.getString("info");
        System.out.println(str2);
        
        ResourceBundle rb3=ResourceBundle.getBundle("TestResource");
        //若未指定Locale则默认取当前语言的Locale，此处默认为zh_CN
        //若无TestResource_zh_CN_properties文件，则取TestResource.properties
        String str3=rb3.getString("info");
        System.out.println(str3);
    }
}