springboot国际化

目录结构

实现步骤

1. 配置i18n文件

   • login.properties

   login.btn=登录
   login.password=密码
   login.remember=记住我
   login.tip=请登录
   login.username=用户名
   

   • application.properties

   # 我们的配置文件的真实位置
   spring.messages.basename=i18n.login
   

2. 项目中进行按钮自动切换,需要自定义一个组件LocaleResolver

   • MyLocaleResolver

   public class MyLocaleResolver implements LocaleResolver {
       // 解析请求
       @Override
       public Locale resolveLocale(HttpServletRequest request) {
           // 获取请求中的语言参数
           String language = request.getParameter("l");
           Locale locale = Locale.getDefault();//如果没有就使用默认的
           // 如果请求的连接携带了国际化的参数
           if (!StringUtils.isEmpty(language)) {
               // zh_CN
               String[] split = language.split("_");
               // 国家_地区
               locale = new Locale(split[0], split[1]);
           }
           return locale;
       }
   
       @Override
       public void setLocale(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Locale locale) {
       }
   }
   

3. 将组件配置到spring容器@Bean

   • MyMvcConfig

   @Configuration
   public class MyMvcConfig implements WebMvcConfigurer {
       // 自定义的国际化组件就生效了!
       @Bean
       public LocaleResolver localeResolver() {
           return new MyLocaleResolver();
       }
   }
   

4. #{}调用国际化内容

   • index.html

   <form class="form-signin" th:action="@{/user/login}">
      <img class="mb-4" th:src="@{/img/bootstrap-solid.svg}" alt="" width="72" height="72">
      <h1 class="h3 mb-3 font-weight-normal" th:text="#{login.tip}">Please sign in</h1>
      <p th:if="${msg} != null" style="color: red;" th:text="${msg}"></p>
      <input type="text" name="username" class="form-control" th:placeholder="#{login.username}" required="" autofocus="">
      <input type="password" name="password" class="form-control" th:placeholder="#{login.password}" required="">
      <div class="checkbox mb-3">
         <label>
           <input type="checkbox" value="remember-me" th:text="#{login.remember}">
         </label>
      </div>
      <button class="btn btn-lg btn-primary btn-block" type="submit" th:text="#{login.btn}">Sign in</button>
      <p class="mt-5 mb-3 text-muted">© 2017-2018</p>
      <a class="btn btn-sm" th:href="@{/index.html(l='zh_CN')}">中文</a>
      <a class="btn btn-sm" th:href="@{/index.html(l='en_US')}">English</a>
   </form>