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

 1 package 国际化;
 2 
 3 import java.util.ResourceBundle;
 4 
 5 public class TestResource {
 6     public static void main(String[] args) {
 7         ResourceBundle rb=ResourceBundle.getBundle("TestResource");
 8         System.out.println(rb.getString("name"));
 9     }
10 }

View Code

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

 1 package 国际化;
 2 
 3 import java.text.MessageFormat;
 4 import java.util.ResourceBundle;
 5 
 6 public class TestResource {
 7     public static void main(String[] args) {
 8         ResourceBundle rb=ResourceBundle.getBundle("TestResource");
 9         String str=rb.getString("info");//含有占位符{0}、{1}
10         System.out.println(MessageFormat.format(str, "中国","北京"));
11         //运行结果：country:中国,城市：北京
12     }
13 }

占位符的使用

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

 1 package 国际化;
 2 
 3 import java.util.Locale;
 4 import java.util.ResourceBundle;
 5 
 6 public class TestResource {
 7     public static void main(String[] args) {
 8         Locale locale=new Locale("zh","CN");
 9         ResourceBundle rb=ResourceBundle.getBundle("TestResource", locale);
10         String str=rb.getString("info");
11         System.out.println(str);
12         
13         Locale locale2=new Locale("en","US");
14         ResourceBundle rb2=ResourceBundle.getBundle("TestResource", locale2);
15         String str2=rb2.getString("info");
16         System.out.println(str2);
17         
18         ResourceBundle rb3=ResourceBundle.getBundle("TestResource");
19         //若未指定Locale则默认取当前语言的Locale，此处默认为zh_CN
20         //若无TestResource_zh_CN_properties文件，则取TestResource.properties
21         String str3=rb3.getString("info");
22         System.out.println(str3);
23     }
24 }

Locale的使用