SpringBoot 國際化LocaleContextHolder的基本配置

1. 在resources創建文件

   messages_zh_CN.properties（中文），寫入

   #Unicode轉碼
   hello=\u4f60\u597D
   

   messages_en_US.properties（英文），寫入

   hello=hello world
   

   結構如圖

2. 創建配置類

   @Configuration
   @EnableAutoConfiguration
   @ComponentScan
   public class LocaleConfig implements WebMvcConfigurer {
   
       //Cookie
       @Bean
       public LocaleResolver localeResolver() {
           CookieLocaleResolver localeResolver = new CookieLocaleResolver();
           localeResolver.setCookieName("localeCookie");
           //設置默認區域
           localeResolver.setDefaultLocale(Locale.ENGLISH);
           //設置cookie有效期.
           localeResolver.setCookieMaxAge(3600);
           return localeResolver;
       }
   
       @Bean
       public LocaleChangeInterceptor localeChangeInterceptor() {
           LocaleChangeInterceptor lci = new LocaleChangeInterceptor();
           // 參數名
           lci.setParamName("lang");
           return lci;
       }
   
       @Override
       public void addInterceptors(InterceptorRegistry registry) {
           registry.addInterceptor(localeChangeInterceptor());
       }
   
   }
   

3. 測試

   @RestController
   public class TestController {
   
       @Autowired
       private MessageSource messageSource;
   
       @GetMapping(path = "/test2",produces = "text/html;charset=utf-8")
       public Object test2(){
           Locale locale = LocaleContextHolder.getLocale();
           String hello = messageSource.getMessage("hello", null, locale);
           return hello;
       }
       
   }
   

   訪問
   http://127.0.0.1:8080/test2?lang=zh_CN
   http://127.0.0.1:8080/test2?lang=en_US