SpringBoot 实现国际化_springboot controller 国际化-优快云博客

1.在resources目录下创建i18n目录
2. 在i18n下创建默认的资源文件messages.properties
3. 创建中文资源文件：messages_zh.properties
4. 创建英文资源文件：messages_en.properties

5.编写配置的语句

默认显示、中文显示、英文显示，这里就默认显示中文

6.实现I18nConfig配置

public class I18nConfig implements WebMvcConfigurer {
    @Bean
    public LocaleResolver localeResolver() {
        SessionLocaleResolver slr = new SessionLocaleResolver();
        //设置默认语言，中文
        slr.setDefaultLocale(Locale.SIMPLIFIED_CHINESE);
        return slr;
    }

    @Bean
    public LocaleChangeInterceptor localeChangeInterceptor() {
        LocaleChangeInterceptor lci = new LocaleChangeInterceptor();
        //参数名与前端changeLanguages方法携带参数名一致
        lci.setParamName("lang");
        return lci;
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(localeChangeInterceptor());
    }
}

7.spring工具类方便在非spring管理环境中获取bean

@Component
public class SpringUtils implements ApplicationContextAware {

    private static ApplicationContext applicationContext = null;

    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    @SuppressWarnings("unchecked")
    public static <T> T getBean(String beanId) {
        return (T) applicationContext.getBean(beanId);
    }

    public static <T> T getBean(Class<T> requiredType) {
        return (T) applicationContext.getBean(requiredType);
    }

    /**
     * Spring容器启动后，会把 applicationContext 给自动注入进来，然后我们把 applicationContext 赋值到静态变量中，方便后续拿到容器对象
     *
     * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context.ApplicationContext)
     */
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringUtils.applicationContext = applicationContext;
    }
}

8.配置MessageUtils工具类

public class MessageUtils {
    /**
     * 根据消息键和参数 获取消息 委托给spring messageSource
     * @param code 消息键
     * @param args 参数
     * @return 获取国际化翻译值
     */
    public static String message(String code, Object... args)
    {
        MessageSource messageSource = SpringUtils.getBean(MessageSource.class);
        return messageSource.getMessage(code, args, LocaleContextHolder.getLocale());
    }
}

9.controller层

@Api(tags = "语言国际化切换")
@RestController
@RequestMapping("hmsplatform/api/language")
public class LanguageController {
    @GetMapping("/changeLanguages")
    public R changeLanguages(String lang) {
        return R.ok();
    }

    /**
     * 测试接口--后端根据前端设置的语言返回相应语言的文字 MessageUtils.message("addSuccess")
     * @return
     */
    @GetMapping("/test")
    public R test(){
        System.out.println(MessageUtils.message("addSuccess"));
        return R.ok(MessageUtils.message("addSuccess"));
    }
}

中文环境时：