实现效果:默认使用浏览器的语言,如果请求url包含参数l=zh_CN,则使用自己配置的Locale。
springboot也是 使用ResourceBundleMessageSource管理国际化资源文件
步骤:
1、编写国际化配置文件,抽取页面需要显示的国际化消息
2、SpringBoot自动配置好了管理国际化资源文件的组件
@ConfigurationProperties(prefix = "spring.messages") public class MessageSourceAutoConfiguration { /** * Comma‐separated list of basenames (essentially a fully‐qualified classpath * location), each following the ResourceBundle convention with relaxed support for * slash based locations. If it doesn't contain a package qualifier (such as * "org.mypackage"), it will be resolved from the classpath root. */ private String basename = "messages"; //我们的配置文件可以直接放在类路径下叫messages.properties; @Bean public MessageSource messageSource() { ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource(); if (StringUtils.hasText(this.basename)) { //设置国际化资源文件的基础名(去掉语言国家代码的) messageSource.setBasenames(StringUtils.commaDelimitedListToStringArray( StringUtils.trimAllWhitespace(this.basename))); } if (this.encoding != null) { messageSource.setDefaultEncoding(this.encoding.name()); } messageSource.setFallbackToSystemLocale(this.fallbackToSystemLocale); messageSource.setCacheSeconds(this.cacheSeconds); messageSource.setAlwaysUseMessageFormat(this.alwaysUseMessageFormat); return messageSource; }
3、页面获取国际化的值
<label th:text="#{login.username}">Username</label> <input type="text" class="form‐control" placeholder="Username" th:placeholder="# {login.username}" required="" autofocus="">
效果:根据浏览器语言设置的信息切换了国际化(根据浏览器设置的语言, 服务端根据请求头acquire-language判断)
原理:默认的就是根据请求头带来的区域信息获取Locale进行国际化
国际化Locale(区域信息对象);LocaleResolver(获取区域信息对象);
@Bean @ConditionalOnMissingBean @ConditionalOnProperty(prefix = "spring.mvc", name = "locale") public LocaleResolver localeResolver() { if (this.mvcProperties.getLocaleResolver() == WebMvcProperties.LocaleResolver.FIXED) { return new FixedLocaleResolver(this.mvcProperties.getLocale()); } AcceptHeaderLocaleResolver localeResolver = new AcceptHeaderLocaleResolver(); localeResolver.setDefaultLocale(this.mvcProperties.getLocale()); return localeResolver; }
4、点击链接切换国际化
/** * 可以在连接上携带区域信息 */ public class MyLocaleResolver implements LocaleResolver { @Override public Locale resolveLocale(HttpServletRequest request) { String l = request.getParameter("l"); Locale locale = Locale.getDefault(); if(!StringUtils.isEmpty(l)){ String[] split = l.split("_"); locale = new Locale(split[0],split[1]); } return locale; } @Override public void setLocale(HttpServletRequest request, HttpServletResponse response, Locale locale) { } } //配置类中配置 @Bean public LocaleResolver localeResolver(){ return new MyLocaleResolver(); }
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