app.message-source-basename: classpath:i18n/messages_en_US

app.message-source-basename: classpath:i18n/messages_en_US

1. messages_en_US.properties中配置USER_NAME_ISNOT_NULL=User name cannot be empty
2. messages_en_US.properties中配置USER_NAME_ISNOT_NULL=用户名不能为空
3. 
4. 

1. @Configuration
   public class MessageSourceConfig {
   
       @Value("${app.message-source-basename}")
       private String basename;
   
       @Bean
       public ReloadableResourceBundleMessageSource messageSourceWeb() {
           ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
           messageSource.setBasename(basename);
           messageSource.setDefaultEncoding("UTF-8");
           // 设置缓存时间，单位毫秒，这里设置为不缓存，每次读取都重新加载
           messageSource.setCacheSeconds(0);
           return messageSource;
       }
   }

2. 使用处引入messageSourceWeb

   1. @RestController
      public class I18nTestController {
      
          @Autowired
          private MessageSource messageSourceWeb;
      
          @GetMapping("/test/i18n")
          public RightResponse TestI18n() {
              // 业务逻辑
              // 返回值
              return ResponseUtil.rightResponse(I18nEnum.USER_NAME_ISNOT_NULL, null, messageSourceWeb);
          }
      }

   2. 为了返回统一格式，引入了ResponseUtil和RightResponse和状态枚举值

      1. // 返回统一格式
         @Data
         public class RightResponse {
             private Object data;
             private int code;
             private String msg;
         }
         
         // 状态枚举值
         public enum I18nEnum {
         
             USER_NAME_ISNOT_NULL(1000);
             private int code;
         
             I18nEnum(int code) {
                 this.code = code;
             }
         
             public int getCode() {
                 return code;
             }
         }
         
         // 返回统一调用类
         public class ResponseUtil {
         
             public static RightResponse rightResponse(I18nEnum i18nEnum, Object data, MessageSource messageSource) {
                 RightResponse rightResponse = new RightResponse();
                 rightResponse.setCode(i18nEnum.getCode());
                 rightResponse.setMsg(messageSource.getMessage(i18nEnum.name(), null, LocaleContextHolder.getLocale()));
                 rightResponse.setData(data);
                 return rightResponse;
             }
         }
         
         

1. 
2. app.message-source-basename: classpath:i18n/messages_zh_CN
3.